Tirelessly updating Avalon on the El Hierro eruption.

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/El-Buque-Ramon-Margaleff.jpg
Ramon Margalef The ship operates on the eruption area in the south of the island. | FRAN Pallera



"We ask people to trust the scientists and the Pevolca"

VICENTE PEREZ | El Pinar

The director of the Geophysical Observatory of the National Geological Institute (IGN) Carmen Lopez, El Hierro asked the public "to trust Scientific work" developed by experts who are following the evolution of eruptive phenomena, as well as the messages they are giving direction of the Emergency Plan de Canarias (Pevolca).

Thus Lopez said when asked about the feeling that some citizens on the island have, that is not providing all relevant information to the public or the actual data is altered so as not to cause alarm.

In this sense, it was denied by IGN that they had detected a previous tremor second signal indicating a current underwater eruption in El Golfo, which it is spreading in some Internet forums. "With the current data from the monitoring network there is no evidence that there is another tremor signal," says the scientist. What it has done is to install equipment by IGN to distinguish different simultaneous sources of tremor, so it made ​​clear that "if there is a second source, we are able to distinguish which is associated with La Restinga".

In IGN's campaign headquarters in La Restinga, Lopez reiterated his request to citizens to trust the Pevolca. "The management plan is still good, and there is full coordination with scientific groups, which has allowed the right steps to be taken and well implemented."

José María Blanca-CEO of this organization in the Canary Islands, 'underscores that "the volcanology requires monitoring and forecasts can be made space a few hours or days, as nature gives signals to let you know in advance what could happen" so to activate the appropriate civil protection measures.

[Hervé]

Ramon Margalef has been busy for the last 24 hours, from El Golfo to La Restingas:


https://byfiles.storage.live.com/y1p0ocnFsNcKljB3nmzlro1VtxRalZaAXKIdlbuTkhrRCT9-ZWCOCNiR74Rtne969m95zaq5ZX-Iqs/Image-2011-11-12-13h31mn33.jpg?psid=1



Then sailed into that GPS dead-zone:


https://byfiles.storage.live.com/y1pHVm4gy0MYPBmLlFIYvyGCy8n18dB1E-64vPCs9W6ckiM01xndMjJnEmn8RPDw4mHLSOriMBJTsk/Image-2011-11-12-13h35mn27.jpg?psid=1



... right about then:
https://byfiles.storage.live.com/y1pMPzZnRjQAQsafpfeDR1Bzcby-7Yr_hbSWpn6tVO86kU25c8gfuDriNkfbc5Ndeegk8lqVnQ2W14/Image-2011-11-12-13h6mn52.jpg?psid=1
... the dark spot far off between the harbor jetties.

https://byfiles.storage.live.com/y1pyxNGNeavdEPx9u9xvPBjW86WyAnuPXHdboZ1D6CqpEjlx2iJIHDYGGihcIc3P4ZymBUfrm4-oTg/Image-2011-11-12-13h33mn9.jpg?psid=1


... the shiny spot almost at the horizon... gives one an idea of how far Polly is.

[Hervé]

So, what exactly is happening at El Hierro and its submarine volcano?

here is an excellent article from wired.com (http://www.wired.com/wiredscience/2011/11/hydrovolcanism-when-magma-and-water-mix/):

Hydrovolcanism: When Magma and Water Mix


By Erik Klemetti (http://www.wired.com/wiredscience/author/erikvolc/)http://www.wired.com/wiredscience/wp-content/themes/wired/images/envelope.gif (eruptionsblog@gmail.com)
November 11, 2011 |
12:53 pm |
http://www.wired.com/images_blogs/wiredscience/2011/11/original2.jpg (http://www.wired.com/wiredscience/2011/11/hydrovolcanism-when-magma-and-water-mix/original-3/)
A small explosion (possibly 20 meters tall) at El Hierro on Nov. 8, 2011. Image courtesy of St. Thomas Productions (http://www.saint-thomas.net/)


The activity at El Hierro (http://www.wired.com/wiredscience/2011/11/eruption-at-el-hierro-creeping-towards-the-surface/) has brought up a lot of questions about just exactly what happens when a volcanic eruption occurs underwater (http://www.ouramazingplanet.com/2029-picture-el-hierro-underwater-volcano.html) — and specifically, what happens if that eruption begins to occur in shallower water. This is the realm of “hydrovolcanism” or “phreatovolcanism” — when water and magma interact, either directly or indirectly, to produce volcanic activity.

http://www.wired.com/images_blogs/wiredscience/2011/11/MSH80_phreatic_eruption_closeup_from_west_04-12-80_bw_med.jpg (http://www.wired.com/wiredscience/2011/11/hydrovolcanism-when-magma-and-water-mix/msh80_phreatic_eruption_closeup_from_west_04-12-80_bw_med/)
A phreatic explosion on April 12, 1980 at Mount St. Helens. Image from the USGS.

In general, magma’s interaction with water comes in two flavors — phreatic (http://volcanoes.usgs.gov/images/pglossary/HydroVolcEruption.php), where the eruption is steam-driven, but no magma is directly involved, just heat, and phreatomagmatic (http://volcano.oregonstate.edu/education/hawaii/small_struct/vents/p_vents.html), where magma is involved directly in the eruption. Phreatic eruptions don’t require a lot of water — if groundwater or snow/ice melt seeps into a volcanic edifice and heats up (typically due to a new intrusion of magma coming into the upper part of the volcano), that water can flash to steam causing an explosion (see above). Many times, these phreatic explosions are precursors to renewed activity at a volcano.

Phreatomagmatic eruptions require more water than phreatic. What happens in a phreatomagmatic eruption is usually the erupting magma is directly introduced into a body of water — possibly a crater lake, meltwater from snow or ice, seawater — and the very large contrast in heat (sometimes upwards of 1100°C between water and basalt) causes an explosion of both the water and magma. This is called fragmentation, and ash can be produced during these explosions, meaning what could have been a lava flow becomes an explosive eruption. The 2010 eruption at Eyjafjallajökull (http://www.wired.com/wiredscience/2011/04/eyjafjallajokull-one-year-on-what-have-we-learned-and-not-learned/) in Iceland was initially a phreatomagmatic eruption when the explosive phase started — the erupting magma came into contact with the melting icecap on the volcano and gave it extra explosive oomph — and helping Eyjafjallajökull go from being an eruption that only Icelanders and enthusiasts would note to one that brought Europe to a halt (we might term this a phreatoplinian eruption, capturing both water’s role and the height of the plume). We also saw this explosive interaction of water and magma at the 2009 eruption of Hunga Tonga-Hunga Ha`apai (http://www.wired.com/wiredscience/2009/03/rooster-tails-and-new-islands-and-video-too/). However, the eruption that gave its name to these events — the Surtseyan style of eruption* — was the 1963 eruption of Surtsey (http://volcano.oregonstate.edu/vwdocs/volc_images/europe_west_asia/surtsey.html) off Iceland. In that eruption, much like at El Hierro, the events began as a submarine eruption that eventually reached the surface. The most characteristic aspect of these phreatomagmatic and phreatoplinian eruptions is that the ash produced tends to be much finer in size than normal explosive eruptions that are not driven by water. In the rock record, peperites (http://www.wired.com/wiredscience/2010/08/eruptions-word-of-the-day-peperite/) are likely the result of phreatic/phreatomagmatic eruptions as well.

http://www.wired.com/images_blogs/wiredscience/2011/11/surtsey_air_001_web.jpg (http://www.wired.com/wiredscience/2011/11/hydrovolcanism-when-magma-and-water-mix/surtsey_air_001_web/)
An aerial image of the 1963 Surtsey eruption off of Iceland. Note how the vent in the middle of the tephra cone looks very similar to the current El Hierro activity -- a zone of steam and bubbling, albeit more vigorous. Image from OSU slide collection.

Now, why did the eruption at Surtsey (and El Hierro) need to get closer to the surface to produce an explosive eruption? That just comes down to pressure. The higher the atmospheric (or hydrologic) pressure, the harder it is for magma to fragment and cause an explosive. At surface pressures (~1000 mb or 1 ATM), the lower limit for dissolved gases needed to create an explosive eruption is 0.07 weight %. However, at 100 meters depth in the ocean (~10,000 mb or 10 ATM), that value is closer to 3 weight % dissolved gases, so it takes a lot more dissolved gases in a magma to cause fragmentation when there is increased pressure**. So, until the eruption is close enough to the surface to allow for fragmentation to occur, the eruption won’t manifest itself as anything more than stains, bubbling and debris. Once it gets close enough to the surface or dissolved gases increase, then we can start getting explosions to occur — the famous “Rooster Tails” or “Cypressoid plumes” of Surtseyan activity (http://www.wired.com/wiredscience/2009/03/rooster-tails-and-new-islands-and-video-too/). However, there is some suggestion that large explosive eruptions can happen in the submarine setting — the so-called “Neptunian” eruptions (http://geology.gsapubs.org/content/37/7/639.abstract) — but they are not well understood. Once an island is established (and these can be quite ephemeral as they are mostly made of loose volcanic debris), then the activity might become much less explosive. At Surtsey, impressive lava flows (see below) were issued from the vent once it was closed off from intrusion by seawater.

http://www.wired.com/images_blogs/wiredscience/2011/11/surtsey_12_001_web.jpg (http://www.wired.com/wiredscience/2011/11/hydrovolcanism-when-magma-and-water-mix/surtsey_12_001_web/)
Effusive lava from erupted from Surtsey in 1963 after the vent became subaereal. Compare with the image above. Note the large steam plume on the far right where the lava meets the ocean -- another example of water-magma interaction. Image from OSU slide collection.

This is, by no means, all the ways water and magma can interact, but you can at least get an idea of what we might expect from El Hierro if the eruption continues – so be sure to keep an eye (http://www.elhierroendirecto.movistar.es/) on the webcams (http://212.170.244.196/) being set up at the island.


* If the interaction is with groundwater, some people call these Taalian eruptions, after Taal (http://www.volcano.si.edu/world/volcano.cfm?vnum=0703-07=) in the Philippines.

** This is why on a moon like Io you can generate volcanic plumes (http://upload.wikimedia.org/wikipedia/commons/7/77/PIA01652-Sequence_Showing_Active_Volcanic_Plumes_on_Io.jpg) that are 100s of km tall — with some help from high eruptive rates and lower gravity.

[Hervé]

There has been only one EQ above 1.5 since 4pm GMT in El Hierro...

... and from the observations of the AVCan guy, Enrique, on the day before the 4.6 EQ:


Why the curve of evolution of cumulative seismic energy released jumps every 40-48h from the date of [September] 29? A pattern that I can not understand the cause of... certainly played this last earthquake in this pattern and would miss the second moderate, as they go in pairs, and it would be for that of the 12.00-h 1:30 am on tonight ... see what happens, but it certainly is an incredible pattern for the power curve.

If the above pattern continues... there should be another of these big ones this evening or early morning... something to brace for in any case.

***************************
From another blog:






http://1.gravatar.com/avatar/12b7123e89a0f00dd9a5ee286055d2e1?s=40&d=wavatar&r=G Ursula says:
November 12, 2011 at 23:20 (http://www.jonfr.com/volcano/?p=1771&cpage=3#comment-36121)
Actually, to bring the discussion back to El Hierro for the moment, Enrique at AVCAN is of the opinion that most likely a submarine vent has opened in the north. This he bases on two things: the appearance of longer and longer Buddhas (“thick high value tremor areas”/spikes/wisneqs) on the tremor signal and the fact that in the last 12 hours there were only 6 earthquakes.
There’s some discussion at AVCAN fb about it, but noone there has seen anything yet to confirm this hypothesis.
Also another thing is that there, they are all still waiting for the next big (4.6 or more) earthquake, as, if there has been no change in the pattern, they are now in the expected window of time and the earthquake is expected until about 1-3am this morning. Unless the tremor has changed the seismicity pattern…
So basically, it’s all just wait and see…

[Hervé]

Strongest so far (3.1 at 11:51):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-13_11-12.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-13.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-13_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows a definite increase in seismic activity:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/Lazaro-Moya-retrato-volcan.jpg
Lazaro at his home in La Restinga, painting in hours that are allowed to enter the village. / FRAN Pallera

VICENTE PÉREZ (Special Envoy) | El Pinar

The volcanic landscapes of El Hierro Lazarus stunned Moya, painter and Cuban lawyer who arrived seven months ago on the island and living in La Restinga. That same nature, suddenly awakened, is that has made him live two evacuations and spend the nights outside the village.

"I try to reassure my wife and my two daughters who are in Cuba, because of the scaremongering that has been generated," he says while taking advantage of the day in La Restinga to paint pictures inspired by the eruption that happens to just one mile from home . Now working on a portrait of the new volcano, which reflects the now famous bubbly stain in the ocean, on which floats a giant restingolita, as already referred to as the first rocks reached the surface from the source eruption. "Since I arrived I was struck by this landscape with its endless gray colors and shapes, which inspired me to my minimalist paintings," he explains, brush painting in oils.

Confesses to being "quiet" despite the volcano, but "down" because in the port of Los Cristianos Tenerife he had two paintings stolen from this series, which had a special predilection. Filed a complaint with the National Police, and although he saw the robber fleeing out in a van, could not give more clues to find him, though he shouted from afar: "Thanks for the pictures".

[randles]

http://www.canariasahora.com/imagenes/prospeccion.jpg


Oil Exploration to begin within 50 miles of Canary Islands

The head of Equo listing to Congress by Las Palmas, Pilar Alvarez, has been reported that the Moroccan Government has already granted permits to start the installation of oil rigs 50 miles from Fuerteventura and Lanzarote in the area between Ifni and Tarfaya .

In a press release, the nominee has indicated that oil drilling permits have been granted to the Australian Petroleum Limiteds Tangiers, with a 75% stake in the eight permits Tarfaya up the block, and 25% for the Moroccan government (OHNYM), which will start a drilling campaign that provides 3D and two wells were drilled in 2012, as explained on the website of the company.

Tarfaya block on the coast of Morocco, has eight permits a total of 15,041 square kilometers located in the Atlantic Margin, into the Canary Islands.

For Equo candidate, "it is irresponsible to to our environment and our tourism industry to remain idle in front of a near-sea oil extraction to our islands, with the danger it represents in case of accident, as happened recently in the Gulf Mexico, where it dumped 800,000 liters of oil a day for many weeks. "

"We must demand that Morocco a degree of compliance with a minimum environmental safeguards, which guarantees protection of marine biodiversity and the absence of collateral damage on the archipelago's natural resources and enforce international law," he added.

The candidate believes that Congress should defend the interests of Spain against Morocco canaries. "Surveys can be hailed as Moroccan nuclear plans slowed in recent years. Spain must enforce the declaration of the waters near the Canary Islands as Particularly Sensitive Sea Area (PSSA), declared by the International Maritime Organization," he added.

"Equo commitment to renewable energy and a moratorium on oil exploration in the sea, negative environmental consequences that are more proven and asks the Spanish Government to act urgently," he said.

[randles]

The volcano of El Hierro, increases in carbon dioxide emissions to the atmosphere

More than four times the average considered normal. However, what worries scientists is now getting more and better data on the possible new outbreak north of the island.



http://www.youtube.com/watch?v=sGgllWnO7_Q

[randles]

Scientists are expecting earthquakes of above M 4.6 on El Hierro

Sergio Gutierrez, Valverde (11.13.2011. 8:16 pm)

Scientists monitor continuously the island of El Hierro are "expecting" that the island will register quakes greater than 4.6 magnitude on the Richter scale, a prediction that keeps the tunnels Roquille and several roads on the island closed to traffic.

The director of IGN in the Canaries, José María Blanco, already announced that the island could suffer earthquakes of 4.5 or 4.6 degrees of magnitude and it happened. Now, the scientific committee considered "expected earthquakes with a magnitude greater than 4.6".

Meanwhile, following the eruption in La Restinga and adding weight to the possibility of another eruption at Frontera, under the sea, but not ruled out either on land, this is the current situation in El Hierro, an island that remains in yellow light and the red level 1 Restinga, a town which remains evacuated and that can only go to their homes from 08:00 to 18:00.

Although scientists say the likelihood of this possible eruption in the north of the island evolve into land is lower, since the incidence of gas is not high, the distortions are less pronounced and the seismicity occurs mostly in the sea nor is it ruled out on the ground eruption, although nobody knows where or to what extent could it could take, a circumstance which has not only kept in suspense to the people of Frontera, living in constant tremor, but a whole island that feels increasingly more earthquakes .

However, the scientific committee believes that in the event of a submarine eruption in the north,''it would not have the impact that occurs off the coast of La Restinga as the depth quickly reaches levels above 1,500 meters.''

[randles]

http://www.gobcan.es/noticias/index.jsp?module=1&page=nota.htm&id=144788

IGN localized yesterday, Saturday, a total of 24 earthquakes in El Hierro with the greatest, a magnitude of 3.1

11/13/2011 ... 11:46 - Ministry of Economy, Finance and Security

* Two of them were felt by the population
* The Involcan shows a decrease in the emission of sulfur dioxide (SO2) into the atmosphere by the eruption of La Restinga underwater.

The National Geographic (IGN) has confirmed to the direction of Civil Protection Plan for Volcanic Risk Islands (PEVOLCA) during the day November 12 the number of earthquakes that were registered was, 24, two of which were felt by the population.

The main event registered yesterday and was felt by the population toaking place at 15:59 hours and reached a magnitude of 3.1 on the Richter scale. This earthquake is located at the NW of the town of Frontera, 3 kilometers from the coast and 19 kilometers deep.

The rest of the events recorded are located in the area of El Golfo (municipality of Frontera), aligned NNW / SSE from the sea to the center of the island forming two distinct groups: the first between 15-17 km and the second between the 20-24 km. In total, since the day July 17, 2011 11 522 events have been found.

Felt earthquakes were as follows: 10:55 pm, 16 km depth, magnitude 2.8, 15:59 hours, depth 19 km, magnitude 3.1

Tremor and distortion level

Moreover, the level of tremor showed frequent pulses of short duration (few minutes) all day yesterday, no major changes in the amplitude of tremor in the background. In the analysis of seismic data do not show evidence of a second source of tremor in the north.

As for the deformations, the monitoring stations in the east of El Golfo show a slight tendency toward the southeast in the last week, losing to the north deformation accumulated from the beginning of the eruption. In the other seasons maintaining the pattern of deformation of the last days.

Evolution of the stain at sea

During yesterday clearly was observed the head of the eruption, no bubbling or fine material was observed.

Diffuse emission of carbon dioxide

Scientists at the Institute of the Canary Islands volcanological (Involcan) have confirmed the direction of PEVOLCA that there has been a decrease in the emission of sulfur dioxide (SO2) into the atmosphere from the eruption is taking place underwater in the South La Restinga.

The results show that the emission of sulfur dioxide (SO2) into the atmosphere increased from 109 ± 19 tons per day on Sunday November 6 to record non-quantifiable values ​​on Saturday November 12 since they are below the limit detection of the analytical methodology used (<2 tonnes per day). The measurements made on Monday November 7 and Tuesday, November 8 yielded an emission rate of 36 ± 9 and 28 ± 15 tons per day of sulfur dioxide (SO2), respectively. Later on Thursday, November 10 quantifiable values ​​were recorded lower emissions of sulfur dioxide (SO2) during the past week, 7 ± 6 tons per day. These results reflect an emission rate of sulfur dioxide (SO2) relatively lower than those normally recorded in volcanic systems subaerial eruptive phase as a result of a neutralization reaction between acid volcanic gases and seawater by alkaline nature that part of the sulfur dioxide (SO2) emitted by the submarine volcano south of the Restinga not reach the atmosphere and contributes to lowering the pH of seawater as well have been reflected by measurements taken by research vessels "Professor Ignacio Lozano "and" Ramon Margalef "of the Canary Institute of Marine Sciences (ICCM) and the Spanish Institute of Oceanography (IEO), respectively.

Recommendations

The direction of PEVOLCA recommends that people follow the recommendations made for the earthquakes and be attentive to the instructions of the authorities, both through the media, the telephone number for citizens of the Canary Islands, 012, and page Canary Islands Government website, www.gobiernodecanarias.org / DGSE / sismo_hierro.html and the Cabildo de El Hierro, www.emergenciaselhierro.org.

[vibrations]

If the above pattern continues... there should be another of these big ones this evening or early morning... something to brace for in any case.



It looks that despite the "only" 2.7 of this morning the pattern continues. Let's hope to the best.

[Bill Ryan]

-------

Hi, Guys (warm greetings to randles and Amzer Zo! :) )

I received an e-mail this morning about the dumping of nuclear waste in the general area of the Canary Islands. Below is an exact copy-and-paste.

If this is all accurate, it's pretty horrific -- though I don't know if there's any threat from the current volcanic activity. All comments welcome!





http://www.youtube.com/watch?v=-FQRH99mJYw


http://www.youtube.com/watch?v=-FQRH99mJYw

"Between 1977 and 1987 NEA spent millions of dollars annually to develop the sub-seabed disposal option for high-level radioactive waste: equipped with drilling gear and/or suppository-shaped free-fall penetrators (containers which would penetrate the seabed like armour piercing bullets) ships from these countries would shoot the high-level waste under the seabed.

"In the early 1980s, research cruises took place in the Caribbean (near Haiti, Cuba), the Eastern Atlantic (between Canary archipelago and Madeira Island) and the South Pacific in order to identify future dump sites and test the free fall penetrators. Of course, none of the bordering countries were informed, let alone consulted.

"The NEA's project ended in 1987. Its conclusions emphasized the technical feasibility of sub-seabed burial of radioactive waste by dropping "free fall penetrators" from special vessel to a depth of 4,000 - 5,000 meters. However, NEA emphasized the need for further, more complex investigations into several aspects of the projects.

http://www.docstoc.com/docs/20876151/GREENPEACE-AND-THE-DUMPING-OF-WASTES-AT-SEA-A

http://www.arte.tv/download/permanent/u1/somalie/Report-the-toxic-ship.pdf

http://www.biblioteca.porto.ucp.pt/docbweb/multimedia/associa/pdf/cg12.pdf

http://archive.greenpeace.org/odumping/radioactive/reports/odhistory.pdf

http://www.portaec.net/library/ocean/water/twenty_years_protecting_the_ocea.html



"Considerable quantities of low level radioactive waste have been disposed of in the deep ocean. Between 1971 and 1982, about 123,000 drums and other containers full of low level nuclear waste were disposed of by several European nations, of which the UK was the largest contributor, in the outer part of the Bay of Biscay, over an area of 5,000 sq. kilometers near 46 deg N, 17 deg W. A survey of the site (Sibuet et al 1985) discovered six containers, of which one appeared to be leaking.



"Between 1946 and 1965, over 75,000 drums of US low-level radioactive waste were dumped at three sites in the Atlantic and Pacific. Atlantic dumping took place near 38 deg N 71 deg W at depths between 2,800 and 3,800 meters. Surveys of two of the sites have revealed some leakage of radioactive cesium and plutonium into the environment (Dyer 1976), and further monitoring of the sites could provide valuable information on the effects of low-level radioactivity on the deep-sea environment and on the dispersion of contaminants.

"Details of dumping operations and the monitoring of this as regards crew safety are contained in ENEA (1968). Essentially the drums were dropped overboard from the ship and sank to the bottom. Impact velocity on the seabed was equivalent to a drop of < meters, and so it was considered to be very unlikely that the drums were damaged by the impact on the sea floor. Drum integrity, therefore, depends on corrosion, or failure of the seal on lidded drums. Estimated lifetimes of the steel drums vary from 15 to 150 years; for the concrete caps perhaps as little as 3 years. Concrete and bitumen waste forms are assumed to remain intact for 1,000 years before breaking up, with complete disintegration in 100,000 years. These rates will be higher for wastes containing lumps of corrodible material. Recoveries of intact drums (see earlier ref) do nothing to negate these estimates. Models of release rates of radionuclides with different containers and different corrosion scenarios are discussed in Holliday (1984) and NEA (1985)."

[randles]

Alexia Alvarez Toledo> psychological experts IN DISASTER INTERVENTION


"We can not send antibiotics with no virus"

NORBERTO CHIJEB | Santa Cruz de Tenerife

Firmness in what he says and how he says it. For one thing a psychologist and a specialist, since 1994, disaster intervention and a member for one year from the Acadepsi (Canary Association for the Advancement of Psychology). For her "El Hierro can" and notes that the media treatment of the seismic crisis is being "good enough".

- How do you analyze the situation in El Hierro and psychological impact on its inhabitants?

"The knowledge we have of psychological responses to natural disasters and volcanic effect that we get general populations that have been affected by these situations, in this sense we can say that the threat of imminent natural phenomenon of most people react with anxiety behaviors are adjusted and standardized with the passage of time. In the case of El Hierro, we see two fortresses that at least in theory allow us to do a good prognosis: first, the population density is low and, secondly, the population is rural El Hierro, the which means that usually live in interaction with their environment. Such a phenomenon in urban areas of Santa Cruz or La Laguna have been very different. "

- But we can prepare to live with volcanoes?

"The volcano is one that teaches and prepares the people, and if in places like the Philippines live with him, here you can also. The Canarian population is in the disaster, presented a slightly hysterical behavior, moderate and efficient, and in the present case, the presence of seismic activity in El Hierro can cause a change in values ​​and lifestyle of people , we can dare to qualify as a positive medium to long term. "

- What psychological help do the Islanders need?

"The professionals have the task of psychology and matching and accompanying these responses with minimum interference in the development of them. We can not take antibiotics without any virus. Another issue is all those people are suffering through their economies, living with the uncertainty of fear for their lives and property. But that is a matter of long-term consequences. "

- Have you been asked to help our association?

"In this case no, because we have no agreement established, and this can not be improvised, because this would create even more chaos and more disaster."

[randles]

Hello Bill, Goodmorning..

Thank you for your post, however, I am going to publically refrain from commenting on this (biting my tongue) until I get answers from my own sources plus the press here on the Islands, I have already written to Sergio Guitterez.


Mary Greely, is one of THE biggest scaremongerers on the youtube rounds, with poor presentation and even worse translation... all this for just 1 dollar subscription (voluntary) via paypal... Jeez !!

I hope that you have a lovely day...
To be sure... the spanish press will condemn this, and as it is now been openly posted on this thread, I can only assume that it will attract so much negativity that we will be right back where we started .........to the Tusunami Polava,,, that was presented by Simon day, denounced by Scientists around the World, Paid for by Insurance Corporations, and eaten for breakfast, dinner and lunch by closed minded people who would rather prepare for 'Doom' as opposed to walking barefoot on the sand and loving to live their lives..

I will try to keep your post here updated, and would be interested to hear what Amzer Zo's input is, as both myself and Amzer Zo RESEARCH what we post BEFORE posting, so as to ensure the clarity, certainty and direction of this thread,,

Have a lovely day :)

:focus: :suspicious::blah::blah: :bigfish: :banplease:


-------

Hi, Guys (warm greetings to randles and Amzer Zo! :) )

I received an e-mail this morning about the dumping of nuclear waste in the general area of the Canary Islands. Below is an exact copy-and-paste.

If this is all accurate, it's pretty horrific -- though I don't know if there's any threat from the current volcanic activity. All comments welcome!

[vibrations]

Atlantic dumping took place near 38 deg N 71 deg W at depths between 2,800 and 3,800 meters.

I went through the docs Bill provided and the coordinates are not right. Also as you say Randles, attracting more negativity doesn't serve.
Off course there is a toxic waste everywhere but I think so close to the islands there is a very small possibility, and the area between Canary islands and Madeira is a huge surface, so another point which talks about the NON connection. IMHO.

[randles]

https://p.twimg.com/AeIg61XCIAA2QCJ.jpg

La Restinga this morning... beautiful !!!

#ElHierro burbujeo en #LaRestinga #volcán pic.twitter.com/Uhly6sWu

[randles]

Absolutely correct...
On a personal note, I have been looking at this over a couple of days, after a rather 'smutty' note that I received from Mary Greely herself, and the content that was posted I flagged up privately with Amzer Zo. Last night the moderators here removed these posts and opened a new thread, which I can only assume was to put the matter to open debate for theorists and people that ..well,,, I should leave it there.. as for the posting itself,,.. NOTHING, NADA, ZIP stacks up other than other peoples ego's and their intent to increase viewing figures either through public forums or youtube channels,..

Have a lovely day :)




Atlantic dumping took place near 38 deg N 71 deg W at depths between 2,800 and 3,800 meters.

I went through the docs Bill provided and the coordinates are not right. Also as you say Randles, attracting more negativity doesn't serve.
Off course there is a toxic waste everywhere but I think so close to the islands there is a very small possibility, and the area between Canary islands and Madeira is a huge surface, so another point which talks about the NON connection. IMHO.

[randles]

Just a reminder of the webcam address for La Restinga..

http://www.hierroendirecto.movistar.es/

[randles]

Earlier this week, I wrote of a documentry that is being broadcasted tonight on rtve.es, that will be cut to live broadcasting from the Island..
The details are as follows :

BONET CARMEN - After centuries of silence, the island of El Hierro 'claims' its volcanic origin. This Sunday at 22.30 h on Channel 24H.

http://www.rtve.es/noticias/directo/canal-24h/

[randles]

http://www.ungeologoenapuros.es/wp-content/uploads/2011/11/131111-1024x687.jpg
El Hierro through the Earth satellite at 10.30 GMT on 13/11/11. NASA.

http://static.amazings.es/media/2011/11/fig2-580x819.jpg
Map showing epicentres of earthquakes occurring from July 17 until November 8. The color indicates the depth.

http://static.amazings.es/media/2011/11/fig6-580x434.jpg
Chart showing the seismicity at depth. The colors indicate the intensity of earthquakes, the green being the least intense and red the highest intensity. The red circle indicates the position of the former magma chamber. The blue circle indicates the position of one of the feeders of the magma and the yellow circle indicate the position from where would the other drawer. | Nahum Méndez López Laborda Chazarra and Casto.

http://static.amazings.es/media/2011/11/fig6b-580x337.jpg
Schematic interpretation of seismic activity where you can watch the feeders and old differentiated magma chamber through which the magma is rising outisde. | Nahum Casto Méndez López Laborda Chazarra.


http://www.youtube.com/watch?v=SL4RIUrLF6Y

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/espuma-en-la-restinga-fp.jpg
The port of La Restinga brown foam in the water. | FRAN Pallera


La Restinga at dawn is smelling of gases and with Volcanic Foam in the Harbour

VICENTE PEREZ (Special Envoy) | La Restinga

La Restinga is showing signs of volcanic activity with the arrival of more gas, foam and volcanic material to its port, originating from the submarine eruption for more than a month occurring under the sea a mile from this village.

Special envoys visited Diario De Avisios Sunday morning in La Restinga and ascertained the smell of volcanic gases in the port environment in which stagnant water could be seen sparkling stains the entrance of of volcanic material (without observing pyroclastic ) and dead fish, including some cephalopods.

The stench is nauseating at times, causing some respiratory discomfort if a person gets too close to the sea, even in the neighborhood there is a mobile unit for measuring air quality continuously and the authorities have decreed any access restrictions.

Sources from the National Geographic Institute (IGN) also indicated that if warned that these concentrations are harmful to health , measures would be taken, which has not happened yet.

The currents also has drawn a long patch of brown foam, broken down into discrete points, in which fish are dead, that has been accumulating on Sunday. The entire coast is also affected by the fumes of sulfur and other gases that leave a green color, today, solar radiation and the lack of clouds, very visible in contrast to the blue of the ocean is not exposed to these fumes .

The green patch extends from north to south and South East,, giving headlong into the Sea of Calms, opposite El Julan, a marine reserve housing a rich biodiversity, the victim now an authentic holocaust.

By the streets were some residents, including with a review with some fishermen at the dock, but overall the atmosphere is one of loneliness. Yesterday opened a few bars, including the El Refugio, one of the proprieters, Alexis Morales, who showed their intention to continue to open their business every day, even among its customers abound with geologists and journalists covering the volcanic eruption .

The Bubbling is Once Again Seen

Focused around the volcano, where on Sunday a slight bubble has reappeared and is clearly identified with a brown hue, the vessel Ramon Margalef , oceanographic research, conducting biometrics, in an attempt to find out, how much of the surface area is the focus eruption. The latest data was known on 28 October, when the submarine was top of the crater 180 meters from the surface and the base 300, an open space at the foot of an area that the fishermen called La Tablada. (The Table)

"If It had gone out via the table, there is less than 200 meters deep, but where it came from the volcano there is a valley and Hundur growing fast," said a fisherman yesterday, skeptical about the chances that the crater ends up coming to the surface. "We have to give time," said geologist today the team that makes the official monitoring the eruption.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/david(4).JPG&Width=635&Height=240,109375&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
David Cabrera de Leon, Mayor of La Frontera


La Frontera requires the reopening of the tunnel and the review of measures taken in the municipality

DIARIOELHIERRO.ES, writing (13.11.2011. 18:43 pm)

The Mayor of the City of La Frontera, David Cabrera de Leon, today demanded a review of all the preventive measures taken in the municipality, including the reopening of the road of Sabina, the return home of displaced families of Las Puntas, and the the tunnel reopened Roquille,''taking into account all that the city has more than 11,000 supporting and seismic risk areas considered to have stood perfectly for each and every one of them.''

The mayor of La Frontera disapproved of the Government of the Canary Islands on Friday, which would not have contemplated in its decree a specific aid package for the town and the social and economic reality is going through a hard situation that is aggravated by the maintenance of these measures, especially with the closing of tunnels Roquille, which is causing untold losses to the local economy.

[randles]

A geologist says that in Spain there is no consciousness to live in a seismic country

EFE | Pamplona

The geologist at the University of Navarra Antonio Aretxabala stressed that in Spain there is no consciousness of living in a seismic country and indeed, when the earthquake struck Lorca, "People ran out of buildings, instead of running for cover" .

However, he acknowledged that these days it has begun to see a change: "The children of El Hierro are receiving training on how to deal with an earthquake, just as is done in countries with high seismic activity such as Japan, Colombia and United States ".

This was stated by Aretxabala Antonio at a conference on his "Spain, a seismic country: consequences of recent earthquakes architecture," delivered at the Planetarium of Pamplona, in the weeks of the Science, Innovation and Technology campus.

Aretxabala, according to information provided by the academic center in a statement, defended the need for further investigation of several complementary methods for predicting earthquakes, and the emission of gases and Paleoseismology, consisting of layers of sediment to study analyze and detect seismic disturbances times stronger movements.

In this regard, China has indicated that it also studies the behavior of animals, as some species detect earthquakes with much anticipation, like cows and elephants, while those in proximity of these animals, it would provide a few minutes warning before they happen.

The expert, professor of the Laboratory Building of the School of Architecture, also stressed the recent experiences of earthquakes, such as occurred on Wednesday, 20 km from Van (Turkey), have shown that seismic construction standards "do not save lives alone, or mitigate disasters. "

"They have to be accompanied by other measures such as urban planning and pedagogy," he assured.

As an example, he said that in Istanbul, where a major earthquake is expected within the next 20 or 30 years,they have already begun to implement preventive measures to be "a megalopolis of 12 million inhabitants in which 60% of buildings are vulnerable from the viewpoint of earthquake resistance. "

According to information provided by by Aretxabala at the academic center in a statement, he defended the need for further investigation of several complementary methods for predicting earthquakes, and the emission of gases and Paleoseismology, consisting of layers of sediment to study analyze and detect seismic disturbances times stronger movements.

[randles]

La Frontera is more afraid of ruin, than of the volcano of El Hierro

"We have made a prison." Servilius Lopez is a resident of La Frontera, the economic capital of El Hierro. And the beautiful prison to which he refers is the area of the Gulf, the flattest of the island, where production is concentrated pineapple, banana and other fruits and vegetables. For them, this is the drama of the region, and the announcement yesterday that it had appeared more likely an undersea volcano off the coast.

In the 2 Din Don bar revolves the social gathering on the economic impact of the measure. But there is no need for much explanation. After nearly an hour to travel 40 kilometers from Valverde, a foggy mountain road, leaving visibility less than 20 meters in some sections, one understands the difficulties which it refers. And when last Saturday the same journey through Los Roquille tunnel, the road speed remained at 15 km and it took less than one quarter of an hour, carefully respecting the speed limits.

"If there is danger of detachment in the tunnel, there is more on the road to the summit," says Pucho Padron, who owns the bar that has become the center of impromptu meeting by the residents. "Look at the last tremors. There were landslides on the road. In the tunnel, not one. It has always been like that, especially when it rains, like today," he explains.

The closure of the highway is causing an injury that no one has yet quantified: "It's more fuel, more time, and more stress on the road," says Padrón. Residents are also distrustful that they can not use the tunnel, unless by use of the security and emergency vehicles, as confirmed by the spokesman for the City of La Frontera. "Is that being put in danger?" Asks Register.

The region feels further marginalized in the allocation of grants announced by the Canarian Government, who see that they are centered in La Restinga in the south of the island. "Here also are evacuees," Lopez complains, referring to the fifty people who take a week away from their homes by the danger that there desrrumbes by earthquakes, which in this area is where they have been larger (size 4, 6 in the morning of Friday, with possibility to be more, which was admitted by the director of the National Geographic Institute in the Canaries, José María Blanco).

After four months and more than 11,400 earthquake tremors, residents are increasingly less concerned. A proof is that housing has not been, as yet, damaged. That reassures the one hand, but on the other raises the suspicions of the people on precautionary measures dictated. Blanco clarified that the type of movement and acceleration far from the 0.04 G (four hundredths of Earth's gravity) that establishes the seismic safety plan Canarias makes housing and infrastructure have endured so far without problem.

"I prefer three minutes of uncertainty in the tunnel 40 on the road," says Lopez. In fact, an architect consulted by the country indicate that the only risk is in the tunnel is falling "some grit" of the material used to seal the concrete structures that make up the duct.

Padrón, makeshift community leader, argues that there is direct support to businesses of La Frontera. He points out exemptions in the payment of local taxes and Social Security payments. "It is better to join the State than to have to make contributions," he says. It has also proposed that flights and boat trips to El Hierro are funded to allow what it calls "solidarity trips" of people willing to help visit the island for use of restaurants and shopping . "It might cost more than the ticket from Tenerife to El Hierro than the Santa Cruz peninsula," he says.

Although using different language, his complaints match those of the mayor of La Frontera, David Cabrera, who believes that the aid package announced by the Government canary is too focused on relief to populations south of the island and has neglected others. .

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/1112392.JPG&Width=448&Height=409&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


El Hierro registered 14 earthquakes, 3.2M felt by the population

DIARIOELHIERRO.ES, writing / Europa Press, Valverde (11.14.2011. 8:52 pm)

The National Geographic Institute (IGN) has registered on the island of El Hierro during the night a total of 14 earthquakes of between 1.7 and 3.2 magnitude on the Richter scale.

The largest of the earthquakes recorded at 07.28 hours, had a magnitude of 3.2 degrees and was felt by the population. This earthquake occurred northwest of the town of La Frontera. This event was located at sea 20 kilometers deep.

The rest of recorded earthquakes were mainly west of Frontera, between 16 and 21 kilometers deep. The last of these, 2.0 degrees, occurred at 09:49 hours at about 19 km depth and epicenter in the sea.

Also, this Sunday is registered in the Isle of Meridian a total of 15 earthquakes of between 1.5 and 3.1 degrees. Of these, two came to be felt by the population and is located northwest of Frontera. The first, of 2.7 magnitude and epicenter at sea, was recorded at 05.39 hours about 23 miles deep, the second 3.1, occurred at 11.51 hours and 23 kilometers deep.

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/peces-muertos-la-restinga.jpg
The stain of the volcano intensifies in La Restinga, and so does the appearance of dead fish. / FRAN Pallera


70% of the Coast cannot be fished

VICENTE PÉREZ (Special Envoy) | El Pinar

70% of the coast of El Hierro is affected by gas and mineral stain left by the volcano during the month which has already been spewing lava and gases to the seafloor. Only 30% is safe from this pollution, and of that portion where in theory there are still fish catches that would be possible.

The data was provided by this Sunday the Patron of the fishermen of La Restinga, Fernando Gutierrez, who advanced the objective of this group is to prohibit fishing in the entire island, including that one third of the coast, to ensure that the faster recovery.

To do this, these sailors have started the regional deputy chairman and PP, José Manuel Soria, the commitment to bring in the regional parliament's request for a biological strike around the perimeter of El Hierro, which will last at least six months but could exceed the year in the light of developments still ongoing volcanic phenomena and the severity and extent of the damage, something to be determined by biologists. Soria met on Friday in El Pinar with a hundred people from La Restinga, also by the PP regional deputy Manuel Fernandez.

The National Oceanographic Institute (IGN) has found that the volcano has created a suboxic zone (very low values ​​of dissolved oxygen concentration) between 65 and 90 feet deep. This layer is preventing fish access to shallow depths to feed, where they then die from lack of oxygen, not water toxicity.

Gutierrez said the bleak landscape left by the volcano on marine life, "for the green spot has reached Frontera, beaches and of course the sea of ​​calm, but still do not know to what extent each area is affected, although it is clear is that you can not fish in all the extension ".
The representative of 40 fishermen stressed that "all fish are affected".

Closely linked to Venezuela, said Gutierrez has been in contact with the Consulate of the country, as in El Hierro lies more than a thousand Venezuelans, in the event that some were affected by the volcano and require government financial support from Hugo Chavez.

The mariner of El Pinar, who is also spokesman of the management committee created by the residents of La Restinga, makes clear that their struggle is not focused only on behalf of the fishermen but also by all affected economic sectors. "At present the only direct financial support coming soon is the Canarian Government, and as the central government we will wait a few days but if it does not approve new aid, we do not rule protest action," said Gutierrez. In his view, aid approved by the State Administration Council of Ministers "are an insult to those affected, since no use to an employer take a credit if you have no billing ICO for the consequences of the eruption."

However, the Politeness is not courageous, and thanked the staff of the Civil Guard and the Army has sent thanks to the state executive to the island "as well as the work of the City of El Pinar and the Council of El Hierro.

[Hervé]

Strongest so far (3.2 at 07:28):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-14_07-08.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-14.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-14_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows a definite increase in seismic activity:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Ramon Margalef has been busy yesterday and today conducting a detailed survey of the southern ridge:


https://byfiles.storage.live.com/y1p6cNfjPltvrI3GRdYt02YQlwCx2g7led5n4IGxDjVS-HORjCjLoDtF2Q4BAJbWatwDvEkNm-fxt0/Image-2011-11-13-14h11mn44.jpg?psid=1


https://byfiles.storage.live.com/y1p6cNfjPltvrIRORWWjqz6GYeIheX6wkxLgY9Jv0czPe2ZXUfHPtc6I-Y9eFSH15AqqRF6tGBSkbo/Image-2011-11-14-10h57mn20.jpg?psid=1



... and so has been bubbly Polly as seen from the new La Restinga webcams:


https://byfiles.storage.live.com/y1pU4sShRmZVMiRYJ7RJ5-0FnsV-31ehNfnBjv7QN2R6eBGx6bcggXwoub5tjS4-jeFVP9aiL9ZDJw/Image-2011-11-14-11h19mn19.jpg?psid=1

[Hervé]

State of the plume as of November 13:


https://byfiles.storage.live.com/y1p5Wpt0xWi2DvduldYgaakBCNckYvA_g_LkMitKtSvv4UX4ipZDGNLhLvqnC6cNMfgWT-pKIfVG64/Image-2011-11-14-13h23mn48.jpg?psid=1

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/PEVOLCA-600x400.jpg
PEVOLCA The Steering Committee during the hearing. | DA

DIARIODEAVISOS.COM | Valverde

The direction of the Civil Protection Plan for Volcanic Risk (PEVOLCA) has authorized the return home of displaced residents of La Restinga , starting today, will go back to sleep in their homes, however, children continue to receive classes in El Pinar, according to the Director General of Security and Emergency of the Canary Islands, Juan Manuel Santana.


http://www.youtube.com/watch?v=A1-vIIv5Xms

As preventive measureswill stay in that town two buses of the Emergency Military Unit (UME) if necessary for use in a re-evacuation, and the measuring station air quality, which will continue its ongoing analysis. Also, the General Police Corps Canaria (CGPC) and the Civil Guard will conduct a continuous surveillance of the area.

In the same area will maintain the ban on access to the beaches of Puerto Naos and Tacorón and continue in force maritime exclusion zone.

Regarding roads closed to traffic, the Director General of Security and Emergency announced the full opening of the HI-55 road from Las Puntas, from the junction of four roads to the Well of the vote, and the partial opening of 7: 30 to 18:30, of the HI-5 between the roundabout and crossing El Mocanal Las Puntas, section in which the tunnel is located in Los Roquille, whose lane right (Valverde) will remain closed to traffic . The same partial opening hours will have the HI-500, which connects the lighthouse of Orchilla and el Pozo de la Health and HI-50, between Sabinosa and Cruce de la Tabla (junction with SR-553). Instead, continue closed Ecomuseum, the Lagartario and the bottom of El Pozo de las Calcosas.

As residents evacuated in Frontera, Juan Manuel Santana announced authorizing the return home of the inhabitants of the area Los Polvillos but not residents of Las Puntas, which will continue evicted because of the risk of landslides in the area at the level existing seismicity.

Evolution of the eruptive process

Regarding the evolution of the eruptive process, Carmen Lopez, a spokesman of the Scientific Committee said PEVOLCA still ruled out "a new magmatic intrusion in the north," yet said if it were to occur, both on land and at sea, "would have to find other previous parameters as changes in the pattern of seismicity or deformation ", issues that have not yet been produced.

While Carmen Lopez stated that "it is unlikely an imminent eruption," warned that if they can continue producing a level similar to the current seismicity, an earthquake with a magnitude of 4.6 or higher, but always at a depth between 20-23 miles.

As for the eruptive process of southern La Restinga, the Scientific Committee spokesman said that its duration can last days or weeks and there has been an eruptive focus approach to land.

[eric charles]

I was trying to find some sites on a "what if " for a tsunami ,im very very near the east coast of Canada , if the Canaries do Erupt and tsunamis ensues , how big and how .... .... .....

I am 1200 ft elev. apporx 1000km inland if this thing happens like ive watched a few times on discovery

[Hervé]

***

Since July, IGN has officially logged 11,566 tremors at El Hierro... and counting since seismic activity is ongoing!

Meanwhile, this thread just went by 55,000 viewings....


Thank you for your support and for dropping by! :wave:



http://i38.photobucket.com/albums/e105/CommentCrazyGirl/Smileys%20Hello%20Wave/greet013.gif


thank you.......

[randles]

The appeal of "Restingolitas"
From: antena3canarias | November 14, 2011 |
They are light and rough to the touch and have become the main attraction of meeting dedicated to the science of La Orotava


http://www.youtube.com/watch?v=OrgBVcK4LQc

¤=[Post Update]=¤

Seismic activity in northern and southern volcanic
From: antena3canarias | November 14, 2011 |


http://www.youtube.com/watch?v=WiMl5viA07Y

[randles]

Hey Eric !!!

,.... I am trying to find a soft wall to beat my head against...
Sorry to have to enlighten you with this.... BUT THE TSUNAMI HAS BEEN CANCELLED ...

Please accept my apologies for any inconvenience caused, but it is outside of my control, apparently God said that this is a very beautiful world, and human kind should stop being so paranoid and just 'get on with it'

Have a lovely day...

Please make a cup of tea and enjoy... http://www.lapalma-tsunami.com/index.html


I was trying to find some sites on a "what if " for a tsunami ,im very very near the east coast of Canada , if the Canaries do Erupt and tsunamis ensues , how big and how .... .... .....

I am 1200 ft elev. apporx 1000km inland if this thing happens like ive watched a few times on discovery

[Hervé]

I was trying to find some sites on a "what if " for a tsunami ,im very very near the east coast of Canada , if the Canaries do Erupt and tsunamis ensues , how big and how .... .... .....

I am 1200 ft elev. apporx 1000km inland if this thing happens like ive watched a few times on discovery

Hi Eric!

Please, see post # 739 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=327913&viewfull=1#post327913)!

[randles]

New expulsion of pyroclastics and other volcanic material in La Restinga
Courtesy of rtve.es


http://www.youtube.com/watch?v=3055z0YGiAY

[randles]

The Pevolca believes it could evacuate Frontera in 4 hours

LAOPINION.ES. Four Hours. This is the time estimated by the Emergency Plan Volcanic Islands (Pevolca) to evacuate the town of Frontera, in the north of the island, if, as scientists expect an eruption occurred in El Golfo. That, in the worst case scenario of the eruptive process that exists in El Hierro, ie, the magma breaks through the ground somewhere north. Although this is a remote possibility at this time as the volcano evolves, the emergency services have thoroughly studied the situation and to act in case of extreme emergency, with the possibility, even, that people have to be evacuated by sea.

While in the town of Frontera is counted more than four thousand inhabitants, it is estimated that currently reside in El Golfo about 3,500 citizens. It is precisely in the municipality is held these days count of the people who exist today, to have everything under control in the event of having to cope with and plan for such an extreme evacuation. However, the most likely scenario as it stands the northern eruptive phenomenon today is that the eruption occurs in the sea in El Golfo area where little is offshore reaches heights of over a thousand meters in depth. In fact, if the eruption occurs in the area, scientists have claimed that it is even possible that there will be no visible signs to the population, as in the south, at La Restinga, where a large patch of sulfur and the appearance of a large amount of magmatic material is evidence that an eruption is in progress.

If the worst case scenario occurs, ie the process manages to open one mouth of a volcanic eruption on earth in the area of El Golfo the Pevolca has also studied all scenarios. Bearing in mind that if the eruption is on the ground there would be no explosion of magma, it has already established a security perimeter around the area 500 meters in which eruptive mouth opens, which could be extended to a mile if necessary.

The area in which, within the limited possibilities for eruption occurs on land, it is believed that the process may evolvein the town of Los Llanillos. The soccer field in the Frontera meeting point Pevolca planned for the emergency, and if it is produced precisely by the Llanillos, the population of that area (it would be necessary to evacuate the entire municipality of Frontera) could be out through the tunnel of the Roquille, because if you open a mouth, eruptive earthquakes cease almost entirely, as has happened in the south.

The second option would be to escape through the mountain road, much more complicated and that there would be depending on place where the the eruption eminates.. And in the worst possible scenario, that the eruption is so large that affects a major portion of Frontera, there is even a plan to evacuate by sea to the citizens, with the intervention of the Spanish Armada. Everything is planned in El Hierro

[randles]

Here are the monthly run down, in order of popularity by country, for the viewing account for Pollys videos that are viewed through Project Avalon.

Spain
Poland
Aruba
Russia
Germany
Venezuela
United States
United Kingdom
Netherlands
Ukraine

[randles]

http://www.canarias7.es/fotos/o/1111//238161-2g.jpg
Smoke and pyroclastics, on Monday,

Courtesy Canarias7

[randles]

Here is Reuters take on Polly, her eruption and her gas emissions..


http://www.youtube.com/watch?v=1AAD4K8zwi0

[randles]

http://farm7.static.flickr.com/6092/6344026470_8f4a643610.jpg

ULPGC scientists IN El Hierro

Researchers at the University of Las Palmas de Gran Canaria resume Monday (11/14/11) oceanographic campaign in the north of El Hierro, after participating in research conducted aboard the research vessel 'Ramon Margalef' Institute Spanish Oceanography (IEO), which successfully completed the campaign Bimbache-3 in the south of the island of El Hierro. This time, the campaign in the north, where most movements are occurring lately, and the main objective of the research is still perform a physical-chemical and biological waters affected by the volcanic phenomenon and to study the impact of emissions on marine organisms in the region.

ACN PRESS
Photos released by the ULPGC

http://farm7.static.flickr.com/6212/6343276357_eb4dbf1721_z.jpg


Team Pic of Ramon Margalef

http://farm7.static.flickr.com/6092/6344024538_254cd5e04e.jpg

[Hervé]

From Volcanodiscovery.com, the latest smoking Restingolitas:


https://byfiles.storage.live.com/y1p1lR63YX9HSfTaSI_7C6nabuUxbWUJejsKVjgklrj9mPg_FH0JeG7TH-E11ZB765wUva8xX3J5Jw/el-hierro_i49896.jpg?psid=1

https://byfiles.storage.live.com/y1pXe_aVdwGUmRE_lE1wiiMwuH_BKtRQPftjhCtwdeT8epQfn-IN1QDszw4UhrgShVS9k7rBVUNNqk/el-hierro_i49921-2.jpg?psid=1

[randles]

62 Kilos Sunfish caught in the Canarias


http://www.youtube.com/watch?v=DN7QtXYejiA

antena3.com | Gran Canaria | Updated on 14/11/2011 at 19:12 hours

Four friends went fishing this weekend in Gran Canaria, and took more than one hour to get onto the boat a sunfish weighing 62 kilos.

Once in the port they celebrated, because a catch like that is the illusion of any fisherman. Experts have explained that this type of fish can be found in the waters around the globe, including one hundred and four feet deep.

Its meat is a highly prized salmon in Asia. For this reason they decided to cut it, keep it, and eat it. His bone was so strong that no one could open it. even with a hatchet and it was necessary to use special instruments to cut through the bone.

Despite its size, one can say that the animal was not overly large as this species have been cataloged specimens of 270 kilos. This fish is more commonly in South Australia and the Caribbean.

[Hervé]

Coast Guard talking some sense into sailboat while Polly is happily bubbling...




http://www.youtube.com/watch?v=0ChpjaNVG5Y&feature=mfu_in_order&list=UL
http://www.youtube.com/watch?feature=player_embedded&v=0ChpjaNVG5Y
... from La Restinga's webcam.

[Hervé]

Strongest so far (3.4 at 08:52)



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-15_08-09.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-15.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-15_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows a definite increase in seismic activity:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[randles]

Pyroclasts El Hierro November 14 2011


http://www.youtube.com/watch?v=B02oltZ4kto

... and a speeded up version of Amzer Zo's naughty boat coming back into the harbour today :)


http://www.youtube.com/watch?v=53A3B4yVM6Q

[Hervé]

Pyroclasts El Hierro November 14 2011
http://www.youtube.com/watch?v=B02oltZ4kto



On the first video one could find what observers have called "two zones of bubbling" one on the far left and one where the pyroclasts are popping up.

As seen with this video from farther away:



JO7COzBsNlU

... and a close up:


http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc7/383781_288745141158885_134042953295772_953610_1722854670_n.jpg

This diagram shows perfectly what's happening at depth:


https://byfiles.storage.live.com/y1pk_NeQpdLo-8iytoMovIQ_7p4Ka6EcFz6LeekW-mHzgcewhdSNK5I_1t3W7wZmM1_Vssh2A_Muko/Surtseyan%20eruption-01.jpg?psid=1




... explains the two areas since the erupted lava flows down the valley described by Ramon Margalef bathymetric survey:



https://byfiles.storage.live.com/y1p2ebMWaGk9ry8_16HGPs5xFqKLD4cnRZAEiQToaiCRIytCGjmwW1TDjFHqFOkvvZHVL8MIp6ukL0/Image-2011-11-10-13h10mn14.jpg?psid=1




... and a speeded up version of Amzer Zo's naughty boat coming back into the harbour today :)

http://www.youtube.com/watch?v=53A3B4yVM6Q


As for the second video... I only saw the coast guard vessel... :p no sail boat or else the video was speeded up too much and I blinked... :jester:

[Hervé]

On the energy self-sufficiency side... these are HUGE:

http://2.bp.blogspot.com/-CfEC49unr5M/Tr17lykx_fI/AAAAAAAAAFQ/np7eJRYdkvw/s1600/P1000223.JPG


http://1.bp.blogspot.com/-6XaFaYsUL3U/TsF28ibctfI/AAAAAAAAAK8/eqWkY-NirI0/s1600/P1000616.JPG

http://1.bp.blogspot.com/-0jUaukzJAuw/TsF3sDnmBHI/AAAAAAAAALE/TjCU8OTUm6s/s1600/P1000619.JPG


Pictures courtesy of this very interesting blog: http://restingueando.blogspot.com/

[Hervé]

From that same blog (http://restingueando.blogspot.com/), the story of a sailboat and a coast guard dancing on top of a volcano:


http://4.bp.blogspot.com/-ppjkn68j6x8/TsF-HnwZz7I/AAAAAAAAAM8/XKLX73uIZqA/s1600/P1000874.JPG


http://1.bp.blogspot.com/-CrJZZXhy_L4/TsF_MOwGrSI/AAAAAAAAANE/Vh2Q4GyS9Fw/s1600/P1000887.JPG


http://1.bp.blogspot.com/-ev3lCp51PBQ/TsF_d5f8sbI/AAAAAAAAANM/THSyr4RMHHU/s1600/P1000891.JPG


http://3.bp.blogspot.com/-2GWk2hI6FKI/TsF_rtRmJXI/AAAAAAAAANU/_RDHzLRT1Bk/s1600/P1000892.JPG

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/1112541.JPG&Width=361&Height=289&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


IGN REGISTER 6 EARTHQUAKES SO FAR FOR TUESDAY

DIARIOELHIERRO.ES, writing (11.15.2011. 6:25 pm)

The National Geographic Institute (IGN) has registered on the island of El Hierro until 4:47 pm today, Tuesday November 15, a total of six earthquakes of between 2.1 and 2.9 degrees magnitude on the Richter scale.

Of the six earthquakes detected so far, two have been of 2.9 magnitude on the Richter scale. At the moment, IGN does not contain any earthquakes that have been felt by the population.

According to the National Geographic Institute (IGN) collected by Diario EL HIERRO and could be subject to change, the six earthquakes were located in the northwestern town of La Frontera, in the sea, and between 17 and 23 miles of depth.

TREMOR AND DEFORMATION

Moreover, recent data collected by Pevolca for the level of tremors, are with very few pulses of short duration (minutes) during the day yesterday, no major changes in the amplitude of tremor in the background. In the analysis of seismic data it does not show evidence of a second source of tremor in the north.

As for the deformations, the monitoring stations in the east of l Golfo show stability on the island, except for a slight tendency towards the north of the station located in tEl Golfo HI03. In the vertical component there is still a phenomenon of deflation in the south of the island.

RECOMMENDATIONS

The direction of Pevolca recommends that people follow the recommendations made to earthquakes and be attentive to the instructions of the authorities, both through the media, the telephone number for citizens of the Canary Islands, 012, and page Canary Islands Government website, www.gobiernodecanarias.org / DGSE / sismo_hierro.html and the Cabildo de El Hierro, www.emergenciaselhierro.org.

[randles]

http://www.diariodeavisos.com/wp-content/themes/linepress/timthumb.php?src=http%3A%2F%2Fwww.diariodeavisos.com%2Fwp-content%2Fuploads%2F2011%2F11%2Fvolcan-restinga-08-11-11.jpg&q=90&w=280&h=200&zc=1


The eruption of El Hierro increases the sea temperature to 30.9 degrees Celsius

EUROPA PRESS, S / C Tenerife (11.15.2011. 10:09 pm)

Scientists at the Institute of Technology and Renewable Energies (ITER), an agency of the Cabildo of Tenerife and now form part of volcanological Institute of the Canaries (Involcan) have informed the management of the Civil Protection Special Plan for Volcanic Risk Canary Islands (Pevolca) on the temperature evolution reflected from the surface manifestation (bubble zone) of the submarine eruption of El Hierro. Higher temperatures reflected in sea surface were recorded on 6, 7 and 8 November, reaching values ​​of 30.9 ° C, 24.8 º C and 29.7 ° C.

The difference between the maximum and minimum temperatures in the maritime environment reflected surface south of La Restinga using thermal imaging cameras in mobile air position was 1.5 ° C to 9.1 º C during the period from October 19 to November 12.

In this timeframe the highest values ​​recorded between maximum and minimum temperatures of 8.3 ° C reflected, 6.8 º C and 9.1 º C were observed on days 6, 7 and 8 November.

These anomalies were recorded prior to the intense bubbling registered on November 8, bringing water, gas and ash that reached suspended several meters above the water surface.

These temperature differences in the surface environment of the Sea of Calms clearly show a significant heat flow as a result of submarine eruption and allows us to make estimates of the volume of magma required to produce these temperature anomalies in the surface environment of the sea.

The record of this series was made possible by the support and collaboration of the Helicopter Service of the Guardia Civil, in the framework of a cooperation agreement between the Involcan and the airline industry in the Canary Islands Civil Guard to strengthen the geophysical program (thermometry and thermography) that provides Involcan for volcano monitoring in the Canary Islands and Makavol project 'Strengthening of R & D + i + d to contribute to the reduction of volcanic risk in the Macaronesia (MAC/3/C161 ) 'which is being funded by the transnational Cooperation Programme of the European Union Madeira-Canary-Azores (MAC 2007-2013).

Involcan is an institution demanded unanimously by the Senate (2005), Parliament of the Canary Islands (2006) and House of Representatives (2009) with the aim of contributing to improving and optimizing the management of volcanic risk in Spain.

[randles]

A small respite for a troubled island and news of the Residents.
Here is a roundup of the morning news from these Islands.#

From: antena3canarias | November 15, 2011 |
The Kristina Katarina is the first of 22 cruise ships until November of next year will come to the island of Meridian


http://www.youtube.com/watch?v=Wdnbvk33-VE


http://www.youtube.com/watch?v=BMWz5gbTtmY

[scifiscriptwriter]

... you are very brave ... esp. with a little one to worry about. Of course if anything dire happens where you are, the East Coast of the States - where I live - will get the fallout too. I'm scared for both of us.

[Hervé]

... you are very brave ... esp. with a little one to worry about. Of course if anything dire happens where you are, the East Coast of the States - where I live - will get the fallout too. I'm scared for both of us.

Hi scifi!

Please, see post # 739 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=327913&viewfull=1#post327913)!

Then, peruse this site where all the scientific papers refuting that unfounded rumor are collected: http://www.lapalma-tsunami.com/index.html (http://www.lapalma-tsunami.com/index.html)

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/volcan.jpg
The helicopter above the bubbling. | ILOVESANTACRUZ.COM



240 Metres of Bubbles

DIARIODEAVISOS.COM | Santa Cruz de Tenerife

This photograph, taken by ILoveSantaCruz.com, you can calculate the enormous size of eruptive focus. If we consider that the helicopter has a wingspan of 12 meters and was above the bubbling zone, this would be around 240 meters.

[Hervé]

And here is what's down below from Ramon Margalef latest data (November 13):


https://by2.storage.live.com/items/9E509A2880D8D99F!577:Scaled1024/Margalef-2011-11-13-01.jpg?psid=1&ck=0&ex=720

Compared to the October data:

https://byfiles.storage.live.com/y1pZYlcbxGbSo_5QnDLasOUI9oJqcgLTjA6CONoY8MZgnbM9PKoim_Lwlt4yQIkRZNPp_-VgTWhuuo/Image-2011-11-10-13h10mn14.jpg?psid=1

[randles]

On Sunday night there wasabrilliant documentary on rtve.es, Sobre el volcan - On a Volcano. Enjoy !!


http://www.youtube.com/watch?v=iYUePXCwurY

[Hervé]

From space and Rapideye on November 13:


http://www.rapideye.de/images/flood/2011-11-13_RE1_ElHierro.jpg



Close up where one can see a ship's wake (assumed to be Margalef) and steam rising close to La Restinga:





https://byfiles.storage.live.com/y1pz6-4XrOayG4Tob2zsr6zbBjVVvR4QKUv7aQuZLYzH4WmpCADHURwpcXoGiQOD4P64lSXmYL0N9A/Image-2011-11-15-15h35mn26a.jpg?psid=1

[TWINCANS]

In post 1550, there was a sentence I don't understand;

"In the vertical component there is still a phenomenon of deflation in the south of the island."
:confused:
I wondered if anyone could explain?

[Hervé]

In post 1550, there was a sentence I don't understand;

"In the vertical component there is still a phenomenon of deflation in the south of the island."
:confused:
I wondered if anyone could explain?

Hi Twincans!

See post # 1120 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=339696&viewfull=1#post339696) and post # 1294 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=346080&viewfull=1#post346080) for background data on this.

The idea is that the magma chamber underneath El Hierro is displacing the ground on El Hierro. That ground displacement, recorded through GPS stations, is analyzed along three components: two horizontal and one vertical.

A deflation indicates a negative displacement (sinking) and is assumed to be due to magma erupting whereas a positive displacement (inflating, rising ground) is correlated to fresh magma injections (refill of the chamber).

Hope this clarifies it?

PS: All displacements are measured in millimeters.

[TWINCANS]

In post 1550, there was a sentence I don't understand;

"In the vertical component there is still a phenomenon of deflation in the south of the island."
:confused:
I wondered if anyone could explain?

Hi Twincans!

See post # 1120 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=339696&viewfull=1#post339696) and post # 1294 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=346080&viewfull=1#post346080) for background data on this.

The idea is that the magma chamber underneath El Hierro is displacing the ground on El Hierro. That ground displacement, recorded through GPS stations, is analyzed along three components: two horizontal and one vertical.

A deflation indicates a negative displacement (sinking) and is assumed to be due to magma erupting whereas a positive displacement (inflating, rising ground) is correlated to fresh magma injections (refill of the chamber).

Hope this clarifies it?

PS: All displacements are measured in millimeters.

Thanks for clearing that up. I thought it mean sinking but as it's only millimeters there's no need to hems the trousers higher!

[Hervé]

Speaking of which, Geolurking has two new 3D rendering videos, one from GPS data, the other from seismic data for the month of November up to the 15th:


wULIibExLgM

eQGvGoBeEL4

[Hervé]

Rich idea some people might want to follow...


http://www.flickr.com/photos/controtono/3422050790/in/photostream/

[Hervé]

State of the jacuzzi area from yesterday:


http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/302967_289028841130515_134042953295772_954300_1676016350_n.jpg

[GlassSteagallfan]

Thanks to all of you who keep this thread updated. Nice pictures too.

[Hervé]

Strongest so far (3.2 at 05:09):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-16_05-06.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-16.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-16_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows a definite increase in seismic activity:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Now, how about that smoking gun in the El Golfo area...

Here it is as published by IEO (http://www.ieo.es/apartar/ieoprensa/hierro/261011.pdf):


https://byfiles.storage.live.com/y1pMC_EWxygmbv64KTRqkiUtGRfocW5FD5aAGKdJZSKvJrjS1dXkBgStivqK7_rB5NaJZeYpCqeHoM/Image-2011-11-15-20h46mn49.jpg?psid=1





What's that mean?


Simply that some hydrothermal activity is taking place in the El Golfo area.


That could be as spectacular as the "Old Faithful" or a mere inconvenience for pedestrians as in Iceland:


https://byfiles.storage.live.com/y1pdYGKqyq6PxzIbwj2ufRP7EqfDrqZBa2qtVQ3h75l-Weziqa5hnZDBqZG9Vp_iGf8dKJxuKUFbGY/Iceland-Jon%20Frimman-01.jpg?psid=1


See this page for explanations: http://www.jonfr.com/volcano/?p=1788

[Hervé]

Beautiful digital survey and rendering from the Ramon Margalef crew (http://www.ieo.es/apartar/ieoprensa/hierro/261011.pdf):


https://byfiles.storage.live.com/y1pDicB0bDNzl43RMF6GegZzimfMwRTvfWDwHjleCrcYeCU1LP3Wt3qdd0KpuA0ZV7KvDmW_B_WxDs/Margalef-2011-11-13-02.jpg?psid=1



https://byfiles.storage.live.com/y1pNgI9FVvgY1yvDzZDxqiBXJmXXsphyk1f697z1e2qBqTofu7xNNb6_k_ua4KGoEDVmIKC8ie46Xk/Image-2011-11-15-20h34mn30a.jpg?psid=1


However, the above sea bottom lanscape has already suffered some changes with a landslide and the build-up of a second volcanic cone (see post # 1556 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=356634&viewfull=1#post356634))


In any case, now we know what we are looking at when watching the Restinga webcams (http://www.hierroendirecto.movistar.es/) and how far away is Polly bubbling.

[Hervé]

... deeply troubled here...

... thanks to the high quality of the PDF put out by IEO (http://www.ieo.es/apartar/ieoprensa/hierro/261011.pdf), I started looking at their El Golfo survey... nice looking... so on...


https://byfiles.storage.live.com/y1p41Zcum-94m3MBSn_6caweKhyyZ-RCzzckCHXA9F3YMdDU1Vf6mzIi-yuqzRsgFw5c31FHQeWOKU/Image-2011-11-15-22h40mn43.jpg?psid=1


Then, old training and habits quicked in: these look awfully straight...


Let's zoom in!


https://byfiles.storage.live.com/y1pgnkDUmivkDfRD_vuREuZgESgBryUDRHFcvuRzQbMme6qLvEif_ucXdtvjmGlqnFEJ26ZNtcfOn8/Image-2011-11-15-22h42mn51.jpg?psid=1


Yep! Nice rift/graben (http://en.wikipedia.org/wiki/Rift) structures there! No wonder El Hierro skidded all the way down!




Then...

What's that there?



Let's zoom in a bit more...


https://byfiles.storage.live.com/y1pZrpuDGZ8V-0T9JUsEJvjzb3pQJq6lhUtMEf_0iv3wfFHDN5ZwVGl5Hj2NyFg68A60rsMk6bKmCk/Image-2011-11-15-22h48mn44.jpg?psid=1


@&%$! Pheu*&$#g $*!t! No wonder they got hydrothermals there!

Can you see that?



Let's zoom in more:


https://by2.storage.live.com/items/9E509A2880D8D99F!593:Scaled1024/Image-2011-11-15-22h50mn59a.jpg?psid=1&ck=0&ex=720



See them now, these linear structures?




The second set of them... at 1200? Right there:


https://by2.storage.live.com/items/9E509A2880D8D99F!595:Scaled1024/Image-2011-11-15-22h56mn30a.jpg?psid=1&ck=0&ex=720



What's that mean?


Well, it means that instead of having nice fissures slicing the crust linearly, what we have is an intersection of two sets of fractures and rather than having a nice sliced omelet we got scrambled eggs... as a crust in that area.


I don't think it will take very long, now, for the magma to find its way around to there.


The only redeeming thing is the great depth of that particular area.

[Hervé]

http://fotos00.laprovincia.es/fotos/noticias/646x260/2011-11-23_IMG_2011-11-16_00.35.11__5929271.jpg
Juan Manuel Santana, ayer, en El Hierro. i PEDRO GUERRA

'El Hierro population to be evacuated by sea and air in case of explosive eruption'


PEDRO GUERRA - SPECIAL ENVOY EL HIERRO:
Santana seems to be sure that the decisions that have been taken are appropriate, especially for what he is responsible, which is the safety of persons. Though he speaks of the eruption of the north, he confirms that there is enough reaction time.


- How would you rate the management of the seismic crisis of El Hierro?

- In general, good. Keep in mind that this is the first time the Civil Protection Plan for Volcanic Risk (Pevolca) was activated, following its adoption last year, and like everything there are always new issues to be corrected, but it is important to have had an instrument that allows us to manage everything that is the process and the risk associated with this process. Remember that Pevolca's aim is to prevent and that people are safe of a given risk.


- And that is fulfilled?

- It's hard to keep people safe against a particular risk when in addition people get accustomed to that risk as time passes, with respect to others that are imminent, such as fire or heavy rains. In this case the risk is associated with whether the eruption occurs or not, or the occurrence of earthquakes or not. When they occur and are seen, people get more nervous and assumed to be at risk, but as time goes by there is this sense of habit and that you can live with risk. With the eruption phenomenon that happens, to the extent that there is more activity, people feel there is a particular risk and, as time goes, that feeling relaxes. This is common, it goes with everything and it complicates management. It is therefore very important to give all the training and information prior to this process.


- When the Pevolca has to make a decision, how do you get to think in terms of a resident? How do you move a member of Pevolca into the skin of a resident of La Restinga, for example?

- The Pevolca has a number of internal organs that are helping make decisions. Basically, decisions are made ​​based on what scientists have to report at any time, and scientists meet priorly, go over the data and communicate the evolution of the process and associated risks that can come with this process to the director of the steering committee. Ultimately, the responsibility lies with the Government of the Canary Islands, but in other institutions are represented in Pevolca that support decisions. There has been no prior decision to come not supported by the scientific committee.


'- From the technical point of view, is the Pevolca convinced that the tunnels Roquille is prepared to support a major earthquake or open the tunnel by public demand?

- The tunnel is a basic infrastructure in El Hierro and as such, logically, this means that as time goes on you can see that the danger associated with that risk is not going not happen because people are used to nothing happening. But that does not mean it can not happen. When closed, the tunnel is not closed because of its internal conditions, but because of the slopes of the access roads to the tunnel. Why? Because we have reports from the Geological and Mining Institute of Spain (IGME), which had already made previous reports, and said that these slopes were the most susceptible to landslides. Linked to that, there are specific reports on the seismicity occuring and the risks involved. Based on this, decisions are made and what has been tried is to hone the specific risk measures we are under which are determine by the technicians. When access is banned by the outer slopes, not inside the tunnel, which is a problem that has always been attributed to the inside, for whatever reason, it has stuck well. Inside the tunnel, there are no landslides.


- Why does it open during the day and closed at night? What is the difference from the point of view of the danger?

- The decision to open for the day is derived from the variation in seismicity, the scientists tell us that large-magnitude earthquakes would occur at a depth of over twenty miles and that surveillance is more feasible during the day. At night it is more complicated.


- The Gulf. How complex is the crisis management in Frontera in case of eruption?

- Has increased complexity due to a greater population and by having more people there are more vulnerabilities with an increase of the number of people. That makes everything more complex. It is true that the expected type of eruption in the Canary Islands is a type of eruption similar to the Teneguía (La Palma), a fissure eruption and very, very local. Depending on where it occurs, it may be more dangerous or not. Not by lava flows, which are believed to represent some danger, but maybe by the ash flow. We're talking no direct hazard, but water pollution or ash accumulation would cause a collapse of any structure. It is currently expected, but everything is ready.


- In the worst case scenario in Frontera, how would an evacuation run?

- In the worst case scenario, with a type of eruption acquiring an explosive nature with great as cloud height and which is not expected now to begin with, we would have at least two days to prepare everything, with symptoms very clear on the ground as greater deformation and cracks in the ground even before the eruption occurred. There would be a series of indicators that would trigger the decisions. And if this is so, you're all prepared with the placement of temporary shelters in various locations in Valverde and in turn the possibility of evacuating people off the island to south of Tenerife. At first it would be handled through the Port of La Estaca after taking people by car, and there is enough time, otherwise we have to use an airway through the Gulf, helicopters and special vehicles. But this is something which is not contemplated at this time.


- How long does the Pevolca think it might extend this seismic crisis?

- Do not know. Scientists have begun to see signs of crystallization in the material ejected into the Sea of ​​Calm, when the more crystals there are, the closer would be the end of the eruption. But that is in the south of the island, now we face a new stage in the north and do not know if it will cause an eruption or not.


- If you get another earthquake of 4.6 or higher, is the Island is prepared to stand it?

- Scientists have warned us of the problem of landslides, also because greater magnitude earthquakes are right now associated with greater depth, they do not increase the risk with respect to what happened in previous days.


- You presided over Pevolca delegated advisor, have you perceived the so-called 'scientific war' around the El Hierro volcano?

- I have been on program committees and was able to participate a little in the debates, there is scientific debate. It is logical. We talk about people from different scientific streams who are somehow arguing about something. And the discussion is what comes to the best knowledge of the discipline. I have not seen, personally, that kind of difference. I do believe that all institutions want to do their best.


- Are discussions heated in the scientific committee?

- Not particularly. Everything is very respectful.


- There are scientific groups who have felt displaced by the volcanic crisis of El Hierro. What do you think?

- The Pevolca includes those institutions that are to form part of it. IGN is basically responsible for volcano monitoring, and other institutions that jointly conducted with IGN that advisory to the steering committee, as the CSIC, IEO, InVolCan, Canarian universities, etc.. A phenomenon of this type necessarily draws scientific attention, and that's why the Canary Islands Government has sought to facilitate the participation of all researchers, through its institutions, directed the committee to study any part of the phenomenon. Now, that must be distinguished from the scientific committee, which mission is to advise the Steering Committee Pevolca referring to measures taken for safety. They are two separate issues.


- What happened to the Cabildo de El Hierro, which seems to have been away from the Pevolca and decisions?

- I had the opportunity to see the statements made ​​by the president, Alpidio Armas and I mean they are part of the steering committee, and the same information that the scientists forward to us is what they have. In the process of decision making, all have the opportunity to ask any questions one can have to the head of the scientific committee, and decisions are made from what is discussed by the scientific committee. We can understand that an administration of local character may have more pressure, depending on where you are. In this case the council is under pressure to all residents of the island of El Hierro, but most importantly the government is the safety of people. And, based on the information that scientists give us all from time to time, decisions are made. You can not make decisions based on intuitions of the kind "is that it has never happened at all." That can not be the case and decisions are made based on risk. We want to avoid any problems of insecurity for the people, that is what guides us in making decisions.


- Do you think politics has been around the volcano?

- From the direction of Pevolca, no. We can be criticized because the measures have been thought too preventative compared to what has happened then, but then nobody knew, nobody knows what can happen. Our job is to prevent rather than cure.

[Hervé]

:rant:

Rant of the day:

The most frustrating and irritating web-page in the whole world-wide web:

https://byfiles.storage.live.com/y1p1ThQfKU4EOtfs1XA_C3-yw5X1QHUvulwcnnNsaljBA9Hf8X0gN06QyeHiYMxkvWTeMnQlJpWhG0/Image-2011-11-16-4h7mn38.jpg?psid=1

https://byfiles.storage.live.com/y1p1ThQfKU4EOvJhdM47J4t_QMPH9ofMylPaUCX0PFNHITw_HL-cCXZ5kjioF1jxFkLxfK39JmDFYA/Image-2011-11-16-4h8mn38.jpg?psid=1

:rant:

[Hervé]

https://lh4.googleusercontent.com/-Qo57DxUTDsY/TsPABjl3ytI/AAAAAAAAACo/Rfx_rzlqiAw/s912/DSCF0797.JPG
El Hierro November 16, 2011. Picture from Laura, IGN geologist.


El Hierro has recorded 11,604 earthquakes in four months


Twenty-nine of these movements were recorded on Tuesday, five of them felt by the population

EFE:
The National Geographic Institute has registered 11 604 seismic events in El Hierro from July 17, according to data released Wednesday by the Civil Protection Plan for Volcanic Risk Islands (Pevolca).

Twenty-nine of these movements were recorded on Tuesday, five of them felt by the population, the largest of which 3.4 was located 3 kilometers off the coast of Frontera, 17 kilometers deep.

The ground deformations on Tuesday followed the same pattern of stability as in previous days in the horizontal components and the slick in the water caused by undersea volcanic eruption off La Restinga showed low activity.

[Hervé]

Ramon Margalef back to La Restinga after a rest at Los Christianos in Tenerife:


https://byfiles.storage.live.com/y1pm5F6vzL2etlAD7FBJ48exutdy8qyaAgGoDm67tzJqxgzWzHs7SwaRzdKi5eU9CHinCZv2_JGISo/Image-2011-11-16-15h2mn26.jpg?psid=1





Changes of the sea bottom landscape since the first campaign:


http://tenerife.todogeologia.com/download/file.php?id=685
From CalidoT at TodoGeologia.com (http://tenerife.todogeologia.com/viewtopic.php?f=1&t=1798&start=1110)



http://i41.tinypic.com/2rddkrs.gif
From Sondebueu at TodoGeologia.com (http://tenerife.todogeologia.com/viewtopic.php?f=1&t=1798&start=1170)

[Hervé]

Strongest so far (3.6 at 16:25):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-11-17_16-17_sp.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-17.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-17_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows a definite increase in seismic activity:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Not much happened yesterday with a total of earthquakes lower than the day before.

The only thing of note is an intensification of the harmonic tremors up to saturation:


https://byfiles.storage.live.com/y1pg-fmgAYmI7zzFj7WbOXAcTML3v43GHQQHgA_KOMGi7Nx8IEpwPfz_SHmHVf4Kvr_DF8xY4bZnrI/Panorama-6.jpg?psid=1

... which is also something that occurred right before Polly started bubbling in the open:


https://byfiles.storage.live.com/y1ptANVXpE32j1trsPQ_DZMFJfkcMle7LJwZs5IaCmEllwbDcKxi42c7oTOj3zpEE3fGRVR6-YK9u8/El%20Hierro%20eruption-01.jpg?psid=1

[Hervé]

It seems that Ramon Margalef may be having a go with the Liropus 2000 since it is keeping stationary against wind and current, steady location right over the top of Polly's head:


https://byfiles.storage.live.com/y1pIPuYt9epBqZYY4z8mEqdcX_3zGa16tQ69n2-2ML2B_53rR81yG3kPoZYAhD3hD32g6nBqMmmmYc/Image-2011-11-17-3h32mn16.jpg?psid=1
That's the puny paler smudge, 1/4 left of center, in the above picture


https://byfiles.storage.live.com/y1pQE_m_aDjpwp0yNMQrYBMqB_QZYyboVInPNM-1vBBkSXF2-tIQsgp0lBoiqCAy4zFXqCAwJPWg2I/Image-2011-11-17-3h37mn6.jpg?psid=1
That was the steady positioning for almost two hours!


Earthquake-report.com thinks it was the Guardia Civil vessel, however there is a big difference in size and the Guardia Civil doesn't have an aft tall structure which Margalef has:


https://byfiles.storage.live.com/y1pKNruvARCuw2qBmcxlQukFikkb_6XSvlAx01jtow31ndB6Q3RKoAtpFyE2dRX30OYkFeWIbxsf2g/Image-2011-11-16-13h20mn51.jpg?psid=1


https://byfiles.storage.live.com/y1p7uhermIt-qZ5v1Ft36oF5qZBhmv7JO4CAs_sAG1vx9Tqz7YvoF_BR2JldgZSNpl9wzd7N4e3K8U/Image-2011-11-16-13h21mn2.jpg?psid=1


https://byfiles.storage.live.com/y1pSI7YVLT-nVqlokjv8yJXiCu-diI5xttBdNoPb1f_Se9tdug5aJNn0O6Hi0lIJW3Q37Cp_sh3FD4/Image-2011-11-17-4h19mn5.jpg?psid=1

[Ria]

Thank you for your efforts, I imagine it is all very scary and at the same time very exciting.
My thoughts are, is this Atlantis rising?
Much love and keep safe.

[Hervé]

Thank you for your efforts, I imagine it is all very scary and at the same time very exciting.
My thoughts are, is this Atlantis rising?
Much love and keep safe.

Hi Ria!

Let me try to deconfuse ideas and issues here:

The thing with volcanism, if ever there was anything left of Atlantis in the area, it would not only have sunk very deep but, on top of that, would have been buried under thick lava flows, layers of ashes and sediments.

Therefore, even if by some of Nature's tour-de-force the ocean floor came to the surface... well, it would be an ocean floor of thick lava flows and layers of ashes covered with sediments and no Atlantis in sight.

Accordingly, the only way there could be an Atlantis rise would be metaphorically as in that NWO retracing the foot steps of what Edgar Cayce recounted having happened in Atlantis.

That's for another thread than this one.

:focus:

[Ria]

I do appreciate that would be the case and would not expect, to see any remains.
Your work is invaluable, keep safe.

[Hervé]

The City of El Pinar has installed two new webcams in La Restinga area focusing on the Jacuzzi spots with a much higher quality than those of Moviestar.

http://www.elpinardeelhierro.com/periodico/

The views from the two cameras are alternating on the same screen.

[Hervé]

Strongest so far (3.7 at 15:32):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-18_15-16.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-18.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-18_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Something just happened somewhere, hourly seismic tremor graph:


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-11-17_22-23_sp.jpg
The intensity just suddenly decreased. Very similar to what happened on October 12, 2011; just before Polly's Jacuzzi began to appear:
https://by2.storage.live.com/items/9E509A2880D8D99F!619:Scaled1024/H-CHIE_2011-10-12_14-15_sp.jpg?psid=1&ck=0&ex=720


This, following a renewed activity in the La Restinga/El Pinar area two hours earlier with a 2.3* which occurred at a depth of 17 kilometers here:
https://byfiles.storage.live.com/y1piFtlMJsgH6R6eDhDCmdknCgP9JZjWeSbN2LrhR-5KKuwQyE7N7PYah7WCwF3m5pNO9i-1P_mTGw/Eventos_HIERRO-10_2011-11-17--20-10.jpg?psid=1


I think we are going to see Polly emerge out of her bubble bath soon...


See this article for the rationale behind these events: http://www.jonfr.com/volcano/?p=1816


* Last logged EQ by IGN for the day (November 17)

[Hervé]

Plume as seen from the Guardia Civil chopper on November 17:


http://farm7.static.flickr.com/6230/6352766523_4cdf5a913c_o.jpg

http://farm7.static.flickr.com/6117/6352766289_7a1415cc46_o.jpg

[Guest]

Wow, wow, wow this has been an amazing unfolding for me -I have been glued to this thread for months now.

Hope everyone stays safe and the government handles the safety of the people in the best possible way.

Nora

we are all related

[sygh]

Not much happened yesterday with a total of earthquakes lower than the day before.

The only thing of note is an intensification of the harmonic tremors up to saturation:


https://byfiles.storage.live.com/y1pg-fmgAYmI7zzFj7WbOXAcTML3v43GHQQHgA_KOMGi7Nx8IEpwPfz_SHmHVf4Kvr_DF8xY4bZnrI/Panorama-6.jpg?psid=1

... which is also something that occurred right before Polly started bubbling in the open:


https://byfiles.storage.live.com/y1ptANVXpE32j1trsPQ_DZMFJfkcMle7LJwZs5IaCmEllwbDcKxi42c7oTOj3zpEE3fGRVR6-YK9u8/El%20Hierro%20eruption-01.jpg?psid=1

It looks just as intense as Poly only... deeper and, of course, more water pressure.
Just want to say, I am amazed at the graphs.
Prayers, as always.

[Hervé]

New 3D spatial rendering of the EQs for November from Geolurking (interesting preface to the animation):


86lP8-EkbPo

[Hervé]

Another take on the El Hierro situation from a La Laguna University geologist:

José Antonio Rodríguez Losada, Geologist and Professor, Department of Soil Science and Geology at the University of La Laguna.
http://webpages.ull.es/users/jrlosada/losada/joseb.jpg

We have the answers of Professor José Antonio, we particularly appreciate your generosity for providing detailed answers.

1 - I wonder which is the true, serious analysis of the Restinga coconuts, what are the components of these materials and if it can definitely be explosive or not?

Today (11/15/2011), analyses of both the black crust and the majority white material inside the coconut, popularly known as restingolitas, are available. Analyses have been carried out both by members of PEVOLCA and as personal initiatives of researchers outside the official Scientific body. In my opinion all tests have an "a priori" of credibility. I myself am in the process of receiving results of these samples from analyses carried out in accredited laboratories. Meanwhile, knowing that the surface has a black crust of basanite composition ("roughly" basaltic) and an extremely porous white material wiyh a typical composition of rhyolite. These are objective data.

Where is the controversy and why it exists?. The controversy revolves around the white stuff and why such controversy?. From the different interpretations derived from the composition which in turn have a very different implications depending on which interpretation is considered. These interpretations are 3:

a) origin from the fusion of siliceous sediments much older than the magmatic material from the oceanic crust. Such fusion is just induced by the basalt covering the white material,

b) is expanded perlite or volcaniclastic material also older than the magma issued and are also sedimentovolcanics fused but not necessarily of the oceanic crust

c) That the magma is actually rhyolitic and perhaps reactivated by intrusion of basaltic magma.

Additional evidence, mainly from geochemical analyses, are not yet available (or if you have not been shown any) but will confirm, in an objective and indisputable manner, which is the source of that magma or pseudomagma of rhyolitic composition.


2 - Is it safe to say that there will be an explosive eruption if it smells of sulfur as the sulfur, so far as I know, are coming out of the Teide and other explosive volcanoes, right?

No, you can ensure that no explosive phases occur only by sulfur or sulfur compounds. The sulfur compounds (sulfur dioxide, hydrogen sulfide ...) is common in gaseous emissions from volcanic systems in both pre-eruptive periods and post-eruptive. Other factors that may favor the volcanic explosion even with low viscosity magmas and associated with little or no explosive such as basalt. A decisive factor is the presence of large masses of seawater or groundwater near the eruptive conduit and the hydrostatic pressure is sufficient (exceed magmatic pressure) to inject quickly through the phases and produce magmatic explosive eruptions characteristic of hydromagmatic . This is what must be taken into account when weighing the risk of explosive events. However, it should be noted that if the interaction of magma with water occurs under a water column higher than 100 meters, the high hydrostatic pressure (about 1 MPa) can inhibit the explosive expansion of water and therefore significantly reduce the risk of explosive phases.


3 - You know the Hawaiian volcanism well; do you see any similarity of this process in El Hierro with a submarine eruptive episode that occurred in those islands?

RESPONSE. There are certain similarities with the submarines eruptive processes in the Hawaiian archipelago. Dismissing emissions associated with submarine lavas of the Loihi seamount and the submerged part of the lava field-kupaianaha PuuOo system, on the southeast coast of the island of Hawaii, volcanic system that remains active today, but which characteristics have nothing to do with what happens in El Hierro, it is true that submarine eruptions have been reported with some similarity in some islands such as Necker island in 1955 (at the western end of the Hawaiian archipelago).

In this case the process took place in a volcano located about 80 km east of Necker Island under a depth of more than 3000 m. In this case the vapor column reported more than 1000 m above the ocean surface. In 1956 was reported between the islands of Kauai and Oahu (island where Honolulu, the state capital, is located), intense bubbling, turbulent motions in the sea water, significant changes in color and strong smell of sulphurous gases, similar as is observed in El Hierro.

At the Hawaiian volcanic episode, neither columns of steam or mixture of gases and ash came to develop. Those episodes of submarine volcanism were perceived as being punctual and of very short duration.


4 - There is much speculation about the volume of magma available in El Hierro, from your point of view, what would be the most effective method that can be used for calculation? Could you be encourage to make an approximation?

One way to estimate the volume of magma available, not ejected, is the effect caused by that magma accumulation on the surface deformation of the ground, from the depth of magma injection and configuration, namely whether it is horizontal or vertical and, in the latter case, its orientation if it can be determined. There are estimates of the order of 100 million to 1 billion cubic meters of magma accumulated beneath the surface of the ocean floor. When asked if I would dare to make an approximation, I can answer that this estimate seems reasonable. Also of note is that maybe, in the end, the eruption ejects out something of the order of just one hundredth of the volume of magma.


5 - Both the earthquake last Friday's 4.3 º and 4.6 º as of today have been felt in other islands, including Tenerife. Felt in Tenerife and La Gomera is in the middle. It may be a silly question but I can not understand why people feel the 2 islands are completely isolated volcanic edifices by the ocean (not in the same plate, where it is normal). Seismographs okay, but people? This would suggest that the magma chamber may be broader than one thinks and can spread more or deeper waves?

Judging by what the National Geographic Institute shows us, the earthquake of 4.6 º felt in Tenerife, was also recorded dramatically both in La Gomera and La Palma. Now, what one feels is dependent on the people who decide to sit down and notify or shut up; on the other hand, feeling the seismic vibrations of low magnitude earthquakes is something too subjective. Two individuals in the same place may feel differently from the passage of seismic waves. You can tell others do not tell anything at all and this I can say by pure experience. The earthquake of May 9, 1989, where many people left in terror to the streets, I felt absolutely nothing from it. From a small tremor felt on the island of Faial (Azores) in the decade of 80, others who were with me did not feel anything. It is also true that according to the nature of the soil, an earthquake can be amplified in areas with softer soil or sand, can be amplified and be felt with great intensity while in rocky terrain and compact nature may be overlooked.

As for the propagation of seismic waves, they do so through the rocks below the ocean floor so they can reach any of the islands. The farther the island, the lesser the shock wave, but although the islands are separate buildings, they all share the same substrate: the oceanic crust and much of its journey it made through the cortex before entering the rock formations of each island.


6 - Do you know how deep underwater the Restinga volcano is already at? Do you think we can see it coming out above the surface?

It is known that the eruptive mouth is about 200 meters deep, on a cone of about one hundred meters high and 500 diameter at the base. We also know that landslides from the submarine escarpment areas near the volcano have occurred in large blocks. This means that the volcano can be built and destroyed as part of the progresses of the eruptive process. There is still much magma volume to be delivered so we can see a new island, and if the magma continues to come out the process would eventually bring forth this island above the ocean surface and probably would be accompanied by the emergence of hydromagmatic events with high risk of explosion .
But for that, the eruption source must get much closer to the surface, a situation which today does not seem to be the case.


7 - Today what's the probablity that an eruption would likely occur on land in El Hierro?

To give a number in terms of percentage in my opinion is meaningless, and its utility is essentially to meet the insistent demand of political authority on duty who always asks for a location which specific diagnostics can not give them. In my opinion, that the eruptive process started in underwater conditions, can lead to an eruption on land (subaerial eruption), as it is possible that the volcanic system extends below the island from north to south.

I remember before the eruption, there were figures of probability that it took place. Figures are given as a 20% chance that the eruption took place. Well because with this 20%, although the eruption took place in an underwater environment. I personally have a 20% chance of having a car accident or plane crash, or simply because I get on a car or a plane I get on course.

If you force me much and make me give you a number, which I instinctively shun, I would say that between 1% to 5%. Rather low probability, based on the concentration of seismic sources which are not located on land. We also say that this number can vary depending on time and as a consequence of the situation at a particular time even though we speak of an estimate of future short-medium term in all cases.


8-A few days ago I was surprised to see you in a television interview where [the journalist] asserted there is a relationship between the full moon and eruptions and earthquakes. So I set out to ask them [El Hierro] to prove their claim. I waited till November 10, and found that El Hierro did not say anything to support his opinion.
However, and according to the chart I sent him, they have not confirmed his statement regarding full moons.

Enclosed is the graph with the earthquakes which have included the full moon, so you see, have nothing to do one thing with another.

Do not you think that this picture you could have done before releasing to the media his theory?

Greetings. Carlos Soler

see: https://mail.google.com/mail/?ui=2&ik=288390882c&view=att&th=133a18df773072cc&attid=0.1&disp=inline&realattid=f_guzb8qwa0&zw (Link not operational)



RESPONSE:
Not necessarily because I have not released to the media any theory nor do I have the honor of being the father of any theory in this regard. But regardless of what the reporters asked, I remember that I referred only to volcanic eruptions and seismic activity.

That said, as I said in the interview, the influence of the phases of the moon on eruptive phases have been attempted to be proven by other researchers in environments such as the Kilauea volcano and I simply state this idea, which is not much less crazy, at the request of a situation that is not trivial, is the fact that many people may not have a scientific culture but treasure popular wisdom, not to disparage, said that with the full moon, eruptive event happened in El Hierro of greater intensity than occurred up to that point. I asked about that and obviously, you understand the only sensible thing you can say is that the tidal influence is exerted not only on the mass of ocean water but also on solid ground and the bodies of magma in the subsoil and that this can be an influential factor to consider about the volcanic activity and that is as undeniable as undeniable is the existence of tides caused by the moon and the sun, unless we have missed something and someone will discover a new cause for the origin of the tides, why not?. For new discoveries is never too late and minds must be kept open but without the sprawl.

The idea of ​​the relationship volcanoes moon emerged from Steve and Donna O'Meara's marriage, two volcanoes hunters in the style of now deceased Maurice and Katia Krafft who thought about the existence of such correlation. Subsequently, studies carried out by staff of Hawaii Volcano Observatory revealed that the lunar influence on the eruptive phases was reduced by about 1% or whatever it is: of 3900 tidal maximum since the first half of the nineteenth century, 3850 had no connection with eruptive phenomena. This is like saying that such a correlation does not exist in general terms either, without denying the relationship, that the tidal influence may be one among many others triggers an eruptive episode.

Perhaps the circumstances of the interview, the speed of it and the subsequent assembly have been able to convey it otherwise. But if it helps to clarify this answer, I will tell you and all readers that there is no evidence to support such a correlation and I feel that my words seem to have suggested otherwise.

But to finish, it does not preclude the claim that the tidal forces, if not on Earth, are the cause of intense volcanic activity on other planetary bodies in the Solar System. I am referring to Io, the first satellite of giant Jupiter in a 2:1 orbital resonance with neighboring Europa, which, together with the giant Jupiter, is causing periodic tidal deformations which can generate Io's most active volcanic systems around the known Solar System.

What do I conclude from this? Well, while on Earth in general, and on El Hierro in particular, tidal force as the cause of volcanic phenomena and eruptive phases manifests itself as little more than negligible, on other planetary bodies subjected to more intense tidal forces, this factor configured as essential in the development of active volcanic systems, BUT IN THIS CASE, CORRELATION BETWEEN ERUPTIVE PHASES AND PHASES OF MAXIMUM OR MINIMUM TIDAL DEFORMATION IS ALSO NOT KNOWN.

Thank you very much everyone.

Jose Antonio Rodriguez-Losada

[Hervé]

http://fotos02.laprovincia.es/fotos/noticias/646x260/2011-11-25_IMG_2011-11-17_22.40.20__5934316.jpg
The stain of the volcano of La Restinga days ago. INVOLCAN

The critics integrates Pevolca

El Hierro: The crisis was not only sismovolcanic. Tremors have also been among scientists

CIRA MOROTE MEDINA:
Special Plan of Civil Protection and Emergency Response for Volcanic Risk, the famous Pevolca, which manages the geological crisis of El Hierro, has invited a group of researchers from the two Canarian universities and other scientific organizations to come to the island for a meeting. This gesture, which has been practiced in the past, now has a special character, because the guest list contains some names which, so far, were excluded from the discussion and decision-making bodies. Those involved do not say a peep, but peacetime seems to be coming.

This change in the wind coincides with leaked complains to senior officers of the CSIC for a certain opacity in the transmission of data on the eruptive process to the rest of the scientific community, according to El Pais.

Although some of these guests have stayed away to find that their experience was not required by the Pevolca, some, most notably Juan Carlos Carracedo, has been very strong and has been arguing that the management of the crisis has been the "international laughing stock". It was priceless to see him taking notes, sitting among the residents of La Restinga, in a Pevolca talk about the volcanic process.

At the front of the Scientific Committee have been María José Blanco and Carmen Lopez of IGN, who have been saved of criticism from Carracedo for their "impeccable" interpretation of seismic data, and Ramon Ortiz, Joan Martí, CSIC, have also left their mark on the island but seem to have passed into the background, unfortunately for journalists, who gave Ortiz headline after headline.

Another open front is the composition of the eruptive material. Rhyolite, basalt, trachyte, perlite ... The truth is that the issue has become a matter for fourth millennium and has caused opened fighting among some of the protagonists. The tensions are obvious, but always denied, though, by all parties.

The crux of the issue perhaps lies in the fact that professionals who have spent years studying and publishing papers on the volcanic activity in El Hierro have been ignored by those responsible for managing the crisis, when their vision may have contributed to, at least, elements of discussion. This veto has been denied by María José Blanco and Juan Manuel Santana, Director General of Security and Emergency, who have told this newspaper that anyone who has applied for scientific [inclusion?], within the framework of the Plan, has been welcomed.

As for universities, the fact is that the rules governing the Pevolca is to have both schools as members, but has not been the case in practice. That led to the creation of a committee, both outsiders, which was attended by representatives of the ULPGC and La Laguna, but had no real room for maneuver. The University of Gran Canaria, in the words of Vice Chancellor for Research, Fernando Real, says that this new approach "is very positive and will help improve on the best scientific coordination of the eruptive process." Will the tremor ceased?

***************************
Interesting comments to LaProvincia.es above article (http://www.laprovincia.es/especiales/2011/11/18/pevolca-integra-criticos/416490.html?pCom=1#EnlaceComentarios)...

My favorite summarizing Pevolca state of affairs:


Pevolca should dump Google in their efforts to search about volcanological phenomena

[Hervé]

No signs of Ramon Margalef since it entered the GPS dead-zone on the 16th:


https://byfiles.storage.live.com/y1pJtH4xRf0749Ho6JFJeL8kLfg9WP2r3JfkQBK8okBY_sd19hJU9SOo22x-P6-VJcoQhiNnF9BIoE/Image-2011-11-16-15h2mn26.jpg?psid=1




Said dead-zone is defined south-west of the solid yellow (non-dotted) line from S&R aircaft flight above El Hierro:



https://byfiles.storage.live.com/y1pSbz020HwuuqlEsPdZBcxmdEYyRAyKzQ5S_YGlr-hLPZEqmjb4mgMt2CI4MzMQxcihkWsdSp6fjs/Image-2011-11-16-17h24mn13.jpg?psid=1



... so, that's the sector in which Margalef has been operating around for the last 3 days (and nights)... including a 2-hours standstill above Polly's coned-head (see post # 1576 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=357835&viewfull=1#post357835)).

[Hervé]

From Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/):

Update 18/11 – 19:56 UTC

- Following the locally well informed El Hierro Digital we might see a far better image from the Las Restinga Telefonica webcams than we have had so far. The current 2 webcams will soon be replaced by High Definition webcams. Reader Ian Carson reported earlier today that the new webcam was being installed on a far better and stable mast than the one before. Ian took a couple of pictures which he shares with you.

- The Cabildo and Telefonica will also install 2 new webcams (probably the onces they are taking away at La Restinga) in the El Golfo area. Spoiled Childs as we are, we will start asking from now on for an infrared webcam at the Las Calmas sea.

Gracias to the Cabildo President (Mr. Alpidio Armas) and Telefonica on behalf of the earthquake-report.com readers.


http://earthquake-report.com/wp-content/uploads/2011/11/eh-18112011-3.jpg (http://earthquake-report.com/wp-content/uploads/2011/11/eh-18112011-3a.jpg)
Webcam installation in La Restinga - image courtesy and copyright Ian Carson - Click on the image to increase the size

[Hervé]

Strongest so far (3.3 at 18:27):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-19_18-19.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-19.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-19_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces


For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg







New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!

http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg








Location of the EQs for the last 10 days:

http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg









[CENTER]Refresh your browser page to get the latest numbers and positions.

[Hervé]

A little excercise I did in modifying the original IGN EQ spatial plot of 2011/11/18 of 22:58 GMT:


https://byfiles.storage.live.com/y1petJd09rt9oYKz5Skyuq5KPT_j85yfmhWPDCBorKM1SmhhY2c34dEGFJ-6xOHlkSvmMRu7WeJoj0/Eventos_HIERRO_2011-11-18--22-58.jpg?psid=1


in matching horizontal and vertical scales:


https://by2.storage.live.com/items/9E509A2880D8D99F!623:Scaled1024/Panorama-15a.jpg?psid=1&ck=0&ex=720


... gives a totally different picture to work with: the gap between the two main areas of tremor swarms is being closed meaning that the two magma chambers are getting connected and that the main magma feeder is located under the El golfo area.


Also, there isn't much of a mushrooming happening but rather a straight, narrow plutonic emplacement.

[Hervé]

Bizarre... not one EQ tremor logged on the IGN list since a 1.6 at 22:16 yesterday.

Not even the 22:58 one which might mean it was Mag. < 1.5...

I don't know what Polly is cooking but she is either using a steam pressure-cooker or it's a low heat stew... :)

Ooops... a 1.9 at 02:51... that's better knowing it's a stew.

[randles]

Good Morning Avalon :)

Just back from the UK visiting my Grandson...
I managed to take some video whilst flying over the South East Coast of El Hierro, Pollys stain is hugging the coastline..


http://www.youtube.com/watch?v=A5snAURcm-w

[sygh]

Great footage, randles. Hope you had a wonderful trip seeing the kids, and the grandson.

[sygh]

Thanks, Zo, for superimposing all the seizmic data. I kept trying to picture it in my mind. It does look like a horizonal flow, it's always looked like a horizonal flow, not of El Hierro but right under El Hierro. What a culster of seizmic activity to the north!!! One after another in the same place. There must be some venting up there as well. What's your take?

[Hervé]

Thanks, Zo, for superimposing all the seizmic data. I kept trying to picture it in my mind. It does look like a horizonal flow, it's always looked like a horizonal flow, not of El Hierro but right under El Hierro. What a culster of seizmic activity to the north!!! One after another in the same place. There must be some venting up there as well. What's your take?

Hi sygh!

From the tremor plot of all the seismic events on El Hierro, it seems that the magma emplacement follows the, roughly, N-S system of fissures of the area (see post # 1569 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=356916&viewfull=1#post356916)) which, on the island itself, is capped by all the volcanic material since the birth of the island.

Hence, the EQs, as indicators of magma pressure, delineate the progress of said magma/fluids/gases: vertical along the fissures then lateral due to some cap encountered on the way up but always along the main system of fissures.

Since Ramon Margalef has been working in the N-W sector of the El Golfo area (I suspect) for 3 days+nights and just resurfaced from the GPS dead-zone... I suspect there is something happening around the active hydrothermal areas:


https://byfiles.storage.live.com/y1phDKoC_ER4pqVbDinfYjQUGP2D9S1TDNkftccVv8sS1QciY5QyWgrQzOZzgnVZ4kr7FOsbukqfHc/Image-2011-11-19-14h32mn56.jpg?psid=1



Also, the harmonic tremors are back to full motion... with little activity noticed in the La Restinga area... so... something's up in El Golfo!


https://byfiles.storage.live.com/y1plukFN-blq6MXGStcAeFQRn8mE34-vk8NsHLJHdGJXjL0pIHGnPcbAtkTN65ct3RYG8iaTlP23qU/Panorama-08.jpg?psid=1

[sygh]

Just read your reply. Yup. It most certainly seems likely. And the Island of El Hierro will stand. Continued meditations and best wishes.

[Daughter of Time]

Well Amzer Zo, you certainly do your homework. You don't just speak words, you give proof! And i'm no a scientist so it's not as if I understand the graphs but it's all very impressive. Thank you for all the information.

[Hervé]

From Volcano discovery (http://www.volcanodiscovery.com/view_news/2450/El-Hierro-volcano-Canary-Islands-Spain-increase-in-tremor-and-signs-of-a-possible-new-submarine-vent.html) and their on-site obesrvations:

El Hierro volcano (Canary Islands, Spain): increase in tremor and signs of a possible new submarine vent near La Restinga

Saturday Nov 19, 2011 20:21 PM | Age: 6 hrs


http://web.volcanodiscovery.com/typo3temp/pics/27283087e0.jpg (http://www.volcanodiscovery.com/view_news/2450/index.php?eID=tx_cms_showpic&file=uploads%2Fpics%2Fel-hierro_i50232.jpg&title=el-hierro_i50232.jpg&width=1000m&height=600m&caption=The+new+area+of+upwelling+water%2C+located+ca.+300+m+offshore+%2819+Nov%29&md5=4775c3b14a4dfd0d1d9a3fa5e9f1b8c6?file=uploads%2Fpics%2Fel-hierro_i50232.jpg&width=1000m&height=600m&bodyTag=%3Cbody%20bgcolor%3D%22black%22%3E&wrap=%3Ca%20href%3D%22javascript%3Aclose%28%29%3B%22%3E%20%7C%20%3C%2Fa%3E&md5=fef115fc89dc791be21fbaa7af272a09)
The new area of upwelling water, located ca. 300 m offshore (19 Nov)

During our observations from near the south coast at La Restinga yesterday, we could not observe any activity at the surface of the water. This corresponded well with a sharp decrease in tremor measured by the Instituto Geográfico Nacional (IGN).

Today, we could see areas of the ocean surface flattened by likely upwelling water rising from below, at a much closer distance to the shore than the previously active vent area, at only about 300 m distance from shore and slightly to the east as compared to the former area. Volcanic tremor has increased significantly again.

http://static.volcanodiscovery.com/typo3temp/pics/a5f5e206cc.jpg (http://www.volcanodiscovery.com/view_news/2450/index.php?eID=tx_cms_showpic&file=uploads%2Fpics%2Fel-hierro_i50226.jpg&title=el-hierro_i50226.jpg&width=1000m&height=600m&caption=Zoom+onto+this+area+with+flattened+circular+areas+of+the+sea+surface+clearly+visible+%2819+N ov%29&md5=7e662c80e7f00bcfa2f78f3abf3f4b1d?file=uploads%2Fpics%2Fel-hierro_i50226.jpg&width=1000m&height=600m&bodyTag=%3Cbody%20bgcolor%3D%22black%22%3E&wrap=%3Ca%20href%3D%22javascript%3Aclose%28%29%3B%22%3E%20%7C%20%3C%2Fa%3E&md5=de57f6e4213b9fec9b4a5a8f424b9864)
Zoom onto this area with flattened circular areas of the sea surface clearly visible (19 Nov)

We suspect that a new vent might be forming or has formed in this area. Whether this leads to another "jacuzzi" or boiling water area is only speculation at this point. The situation remains interesting.

*******************
So, it seems that Polly is burping closer to the shore now... unless it's a new quirk of local currents being offshoot disturbances due to invigorated acitivity at the main vent?

[Hervé]

Strongest so far (3.7 at 03:15):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-11-20_03-04_sp.jpg
Changed the seismogram to the spectrogram as nothing could be distinguished in the midst of the Van Gogh soup... (see below)
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-20_03-04.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-20.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-20_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Damn! Here we go again... from a new blog on volcanic activity around the world: Volcanocafe (http://volcanocafe.wordpress.com/):

El Hierro – Missing facts and what’s up (http://volcanocafe.wordpress.com/2011/11/19/el-hierro-missing-facts-and-whats-up/)

Posted on November 19, 2011 (http://volcanocafe.wordpress.com/2011/11/19/el-hierro-missing-facts-and-whats-up/)
http://volcanocafe.files.wordpress.com/2011/11/el_hierro_sabinar.jpg?w=640&h=426 (http://volcanocafe.files.wordpress.com/2011/11/el_hierro_sabinar.jpg)
Photographer: Eckhard Pecher, released under GNU.

Something is twisted in El Hierro.

I have for many reasons not written about El Hierro. There are a couple of reasons for that omission. The first one is that it would mainly be speculation about what is happening there. The main reason for it being speculation is that there is not a lot that we do know. The second reason is that the powers that be seem to hide parts of the information that would be needed to write about it really.

I will though write about what I do know.

As some of you have noticed, I have a couple of sources sending me behind the scenes information. They would be in a world of problem if I released all the information I have seen. The information is ranging from inside memos and reports to unreleased photographic evidence of what is happening. Since I grew up in a publishing family, I know the importance of securing the safety of sources, so I will not ever release the material I have gotten. And since I am a Swedish citizen my protection is absolute by law regarding the protection of sources. Nothing can force me to release their identities.

Both sources have sent me memos pointing to IGN editing away shallow earthquakes of lesser magnitude in the El Golfo area. [Geo]Lurking of course went and checked the earthquake list of IGN to the spectral plot of the tremoring, and found “oddities”, that seem to confirm the memos.

http://volcanocafe.files.wordpress.com/2011/11/lurkings-missing-quakes-plot.png?w=640&h=479 (http://volcanocafe.files.wordpress.com/2011/11/lurkings-missing-quakes-plot.png)
Imagery by GeoLurking


Secondly, I have received undisputable photographic evidence of a large gas vent that was open during the time of the large, totally saturating, tremoring that occurred on the sixteenth and seventeenth this month.

The photographic material shows that during this time Bob released very large pyroclasts (floating stones), that surfaced and sank after a while. The pyroclasts was large as furniture.

Also, the water was turning red during the activity. But the most important material was showing a 100 by 100 meter large gas vent that had opened up adjacent to Roques de Salmor in El Golfo.

The imagery also showed gas venting along a fissure on the northern rock face of Roques de Salmor Minor. There is no doubt about it.

http://volcanocafe.files.wordpress.com/2011/11/chie_2011-11-17_sp.jpg?w=640&h=479 (http://volcanocafe.files.wordpress.com/2011/11/chie_2011-11-17_sp.jpg)
The Public Authority of IGN, Spain. Released under Swedish Common Law that requires any and all authorities to release any information freely. Also Released under EU Informaton Freedom Act. The image show the saturating tremoring of the seventeenth.


The area of Roques de Salmor is closed off, everyone around has been moved away, and the tunnel leading in and out of the El Golfo area has been closed down due to the very high gas levels.

At the same time the powers that be released a report stating that gas levels had dropped, and that there was no second source of tremoring. This is a willful attempt at disseminating the truth. As we know, [Geo]Lurking ha[s] backtracked the data given from the stations and found a probable northern second source of tremoring. There was/is a second vent releasing large amounts of gas that was/is the most likely source of the tremoring.

I find the behavior of the powers that be in the area to be totally disgusting. One should never let a natural disaster become a way for personal promotion, and making politics out of human lives in danger is the lowest thing one can do. They should be utterly ashamed of themselves.

CARL

[randles]

An earthquake of 3.7 magnitude shakes El Hierro this morning

DIARIOELHIERRO.ES, writing (11.20.2011. 10:18 hours)

The National Geographic Institute (IGN) has registered at 3:27 pm today, Sunday, November 20, another earthquake felt by the population. The earthquake, 3.7 magnitude on the Richter scale, was located in the northwestern Frontera, 21 kilometers deep.

Also, at 04:03 am this morning an earthquake was located 3.1-magnitude on the Richter scale, in northwest Frontera and 21 kilometers deep. At the moment, IGN does not contain this tremor that has been felt by the population.

According to the National Geographic Institute (IGN) collected by Diario EL HIERRO (which may be subject to change), so far, El Hierro has recorded a total of 8 earthquakes of between 1.8 and 3.7 magnitude on t

[randles]

Cabildo El Hierro has issued another Promotional Video of El Hierro..


http://www.youtube.com/watch?v=W0wBKIItPUs

[randles]

http://www.laspalmasdegrancanaria.net/media/k2/items/cache/7ea2d55a22d4392211f153ebe3ed882a_XL.jpg


The volcano of El Hierro, the image of the week from the ESA space for November 18, 2011


The undersea volcano that has been born near the southern coast of the island of El Hierro, the image is represented in the European satellite Envisat. The volcanic cloud has discolored the surrounding waters and muddy water has reached the shores of the Canary Island.

According to the European Space Agency account, which has considered this decision 'Image of the week', the island's residents are also feeling the frequent tremors - occurring several times a day - and have seen dead fish floating in the water.

Residents have also reported explosions at sea material launching several meters above sea level. The risk of toxic gases emanating from an underwater volcano may pose to the population has led authorities to close off access to some areas.

The ESA reminds the volcanic origin of the Canary Islands and are settled on a hot spot from the standpoint of volcanic.

This image was acquired on November 9 through Media Imaging Spectrometer Resolution on board the Envisat satellite.

[randles]

The volcanic crisis on El Hierro fivefold increase of CO2 emissions to the atmosphere

Valverde (El Hierro), 20 (Europa Press)

The volcanic crisis on the island of El Hierro have increased nearly fivefold normal emissions of carbon dioxide (CO2) into the atmosphere, according to data taken by the volcanological Institute of the Canaries (Involcan) and have been transferred to the direction of the Plan Civil protection Risk Volcanic Islands (Pevolca).

The 8100 measures diffuse flow of carbon dioxide (CO2) reflect "an upward trend in emissions," which has reached 1665 tons per day, a value "equivalent to 4.83 times the normal average value for the diffuse emission seen in CO2 on the island of El Hierro (345 tons per day). "

The Canary Islands government has reported in a statement that "in studies conducted Involcan is found that the gases represent the driving force of volcanic eruptions and carbon dioxide (CO2) is the second major component of volcanic gases, after water vapor. ""Its low solubility in molten silicitados - magma - makes this gas to escape with their ease of volcanic systems in depth,"

[Hervé]

Ramon Margalef is out of the GPS dead-zone and headed straight back to Los Christianos in Tenerife:


https://byfiles.storage.live.com/y1ph3qNl6e4wskDu_T0QRCKcjzPlOoxgDaCRsH18CCgRN9ALqmDUhGpgy1QyRB-lqGJ8dsW7stRQpw/Image-2011-11-20-15h10mn5.jpg?psid=1


Now we'll have to wait for the results...

[sygh]

The Public Authority of IGN, Spain. Released under Swedish Common Law that requires any and all authorities to release any information freely. Also Released under EU Informaton Freedom Act. The image show the saturating tremoring of the seventeenth.

And this coincides exactly with what you found, Zo.

[Hervé]

"The Public Authority of IGN, Spain. Released under Swedish Common Law that requires any and all authorities to release any information freely. Also Released under EU Informaton Freedom Act. The image show the saturating tremoring of the seventeenth."

And this coincides exactly with what you found, Zo.

Indeed!

However, on my part it was from deductions whereas on Carl's part, it's supported by photographic and insiders' evidences (allegedly) which I am not privy of.

It seems to me that the tremor saturation of the recorders sensitivity range is being misinterpreted on many sites and blogs under "vent collapse," "plugged vent" or "rescaling" whereas the activity at La Restinga show it went unabatted whether saturation of the harmonic tremor was reached or not.

In short, how come a collapsed/plugged vent eject meter-size Restingolitas?

Hence the deduction that the fluctuation of the harmonic tremor is coming from another source than La Restingas and Polly is playing her harmonic tremor pipe organ tune from somewhere else.

[Hervé]

El Hierro as seen from space today:

https://byfiles.storage.live.com/y1p5lerQ9O-EDWf7WeKWWTSVrhgj1P6yCCnxJAcDpjI-JDNdgGIxskH9uj8jnPIvqN2TPNf1Kc3yOY/Image-2011-11-20-16h42mn23.jpg?psid=1

[Hervé]

Strongest so far (3.3 at 18:02):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-21_18-19.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-21.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-21_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/el-golfo-el-hierro.jpg
In the area of El Golfo is where there is frequently a series of earthquakes in the island of El Hierro. / DA


Earthquakes do not stop

DAILY ANNOUNCEMENTS | Santa Cruz de Tenerife

The island of El Hierro registered at 3.27 am on Sunday, another earthquake felt by the population. The earthquake of 3.7 magnitude on the Richter scale, was located in the northwest of La Frontera, 21 miles deep, while another 2.9 degrees was also felt on the seven o'clock, also in the municipality of El Golfo.

Also at 03.04 am this morning there was localised a quake of 3.1 magnitude on the Richter scale in the northwest of La Frontera, 21 miles deep. At the moment, IGN does not collect this shaking which has been felt by the population. According to the National Geographic Institute (IGN), until seven in the evening of Sunday, El Hierro had recorded a total of 18 earthquakes of 1.8 and 3.7 magnitude on the Richter scale.

The strongest

IGN reported that the quake highest since the crisis began seismic El Hierro, on July 17, took place yesterday at half past two o'clock, when it recorded a 5.0 magnitude on the Richter scale in the area called Atlantic-Madeira, northwest of the island of La Palma.

El volcanological Institute of the Canaries (Involcan) has moved to the direction of Civil Protection Plan for Volcanic Risk Islands (Pevolca) the results of the 8100 diffuse flux measurements of carbon dioxide (CO2) on the island of El Sunday, El Hierro is have materialized over the entire surface of the island of Isla Meridian.

These measures reflect the registration of an upward trend of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcano island of El Sunday, El Hierro has reached 1665 ± 63 tons per day, an amount equivalent to 4.83 times the considered normal average value for the diffuse emission of carbon dioxide (CO2) on the island of El Sunday, El Hierro (345 tonnes per day).

With this analysis assesses the spatial-temporal variations of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcanic system island of El Hierro in the context of the recent earthquake-volcanic crisis affecting the island.

Escape of Gases

In studies carried out by Involcan, it is found that the gases represent the driving force of volcanic eruptions and carbon dioxide (CO2) is the second major component of volcanic gases after water vapor. Its low solubility in molten-magma-ago requested that this gas to escape with their ease of volcanic systems in depth, volcanological Institute reported yesterday in the Canaries.

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/vuelo-guardia-civil1.jpg
Members of the Helicopter Unit of the Guardia Civil and scientists from Involcan, during a reconnaissance flight. | Involcan


Pevolca confirms that there is no new eruption in La Restinga


DAILY ANNOUNCEMENTS | Valverde

The scientific working group of the Civil Protection Plan for Volcanic Risk (Pevolca) states that "no one can confirm that new focus eruption has appeared in La Restinga, after a helicopter overflight of the area of GES with scientists from IGN.

As confirmed by the press office of the Presidency of the Government's twitter account, "The Pevolca confirmed after the helicopter reconnaissance flight of the GES that there is a new focus in La Restinga eruption."

In this way, belies Pevolca volcanological Institute of the Canaries (Involcan) after flying over the area of ​​La Restinga GES helicopter with scientists at the National Geographic Institute (IGN).

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/333(62).JPG&Width=635&Height=476,25&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Image recorded tremor yesterday, Sunday


The tremor remained very irregular yesterday, say Scientists

DIARIOELHIERRO.ES, writing (21/11/20011. 13:04 pm)

The scientific committee announced on Monday to Pevolca the tremor signal was held yesterday, Sunday, very irregular during the day, with several pulses of different sizes. In the morning were similar to those at the end of Saturday's final stretch, but after 17:00 pm there was a slight decrease. In the analysis of the data it is not evidence of a second source of tremor.

Meanwhile, ground deformation follows the same pattern of stability in previous days in the horizontal components. Vertically stations indicate El Golfo, mainly, to a slight elevation, while the rest shows deflation.

With respect to the stain, IGN reports that there was no distinct coloration and surface activity in the area where in earlier days was bubbling, reports Pevolca.

EARTHQUAKES

On the other hand, the National Geographic Institute located during the day yesterday, Sunday, a total of 24 earthquakes at depths between 15 and 27 km, four of them felt by the population with magnitudes of 3.7, 2.9, 2.8 and 2.7 on Richter scale.

The movement reached a magnitude of 3.7 on the Richter scale occurred at 3:15 pm (UTC) and was located 2 miles off the coast of Frontera at a depth of 21 kilometers. It was felt, mainly in the town of Tigaday.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/222(38).JPG&Width=635&Height=258,9609375&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


A Forecast Remains of a 4.6 Earthquake

DIARIOELHIERRO.ES, writing (21.11.2011. 16:05 pm)

The scientific group of Civil Protection Plan for Volcanic Risk (Pevolca) confirmed this morning that in El Hierro, that an earthquake with a maximum magnitude seismicity expected of 4.6, taking into account "the analysis of the seismic catalogue of the past twenty days" .

In any case, the number of earthquakes has decreased in recent days, and frequency, producing a significant record in the early hours of Saturday to Sunday "with a wave of magnitude 3.7".

Scientists confirm that the seismicity occurs in the same alignment NNW SSE, in the municipality of Frontera, but always at a depth of between 15 and 27 kilometers. The evolution of the eruptive process, therefore, "remains stable, but leaves open the scenario of a possible eruption in the North, who has not, in any case, showing characteristcs of an imminent eruption."

[Hervé]

From Earthquake-report.com:

Still spewing material out there today:


https://lh6.googleusercontent.com/-GOkESbtbFi0/Tsp6kDr7oFI/AAAAAAAAAUk/nT_YtCBpE8c/s912/NewVent2111.jpg
New Vent November 21, 2011 - Courtesy and Copyright Ian Carson

Important update 21/11 – 15:09
Ian Carson did report the following a couple of hours ago :
Just spoke to guy from Canaries Geological Institute back from the Guardia Civil helicopter overflight. New vent today about 300 meters from old (and the nearest) vent but parallel to and no nearer to coast than the old one. Quite a lot of bubbling at first but has settled to light blue stain as older vent.
- We expect Guardia Civil / Involcan helicopter images later today

[Hervé]

Someone (Manuel74) at Todogeologia (http://tenerife.todogeologia.com/viewtopic.php?f=1&t=1798&start=1395) produced a graphic visualization of the density of earth quakes and came up with two main outcomes depending on the cut off point for density, both indicating a connection between the two swarms.

Shown in two S-N cross-sections, South to the left and the green spot indicates Polly's location:



Hello,

How many miles down is the Moho discontinuity in El Hierro? The seismic swarms show, I think, that it's between Km 14 and 18 where the number of earthquakes is much smaller. Is it possible that these measures are approximate and earthquakes are really hitting it squarely against or are at the gates?.

Today I started to "investigate" the density of earthquakes in the ground, I attached two scenarios depending on the "density level" selected, it strikes me that in both scenarios, the "cloud" of earthquakes seems to be linked:

Scenario A:

http://img855.imageshack.us/img855/2254/201111densidadsismosa.png
In this case there is a real union between the two swarms (before and after the October 10).



Scenario B:

http://img194.imageshack.us/img194/5456/201111densidadsismosb.png

In this case I am surprised that there is a third "cloud" caused by earthquakes of the second period.



I hope more qualified interpretations. I want to clarify that in the images of the earthquake magnitude is not taken into account.

Regards,

Manuel

[Hervé]

Strongest so far (3.3 ay 16:46 and 21:08):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-22_16-17.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-22.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-22_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg





New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg




Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg




Refresh your browser page to get the latest numbers and positions.

[Hervé]

Most noticeable for the last two days has been the gradual decrease in intensity of the harmonic tremor... Polly's tired of blowing full blast into those pipes and trying to catch her breath?

https://byfiles.storage.live.com/y1pIhrulDiI2yIy0zTq-xlaoDYmki1NY2XKAE9KeU4LAoXNP3lZHzz2enLVcFKaq97hhFI-fWpU_sk/Panorama-09.jpg?psid=1

[Hervé]

https://lh6.googleusercontent.com/-GOkESbtbFi0/Tsp6kDr7oFI/AAAAAAAAAUk/nT_YtCBpE8c/s912/NewVent2111.jpg
New Vent November 21, 2011 - Courtesy and Copyright Ian Carson


Scientists are trying to confirm a new eruptive mouth east of La Restinga.

The north of El Hierro remains under the threat of another outbreak, while not imminent.


AGENCIES
SANTA CRUZ DE TENERIFE:
Scientists working on the monitoring of the eruptive process of El Hierro try to confirm the existence of a possible new eruptive mouth near La Restinga, which could be seen by a Civil Guard helicopter that, yesterday morning, made ​​a recognition flight over the Sea of ​​calms. Some sources close to the Guardia ensure that the people aboard the helicopter are convinced that this is a new focus on the same line as the open fissure eruption, although in this case, located further east, ie nearer the Port of La Restinga.

Scientists from IGN, with director Maria Jose Blanco to the front, sent yesterday afternoon a reconnaissance flight to try to contrast the news, but did not see anything significant. However, the Civil Guard ​​possibly made pictures, as it does on every flight made ​​on the large patch of sulfur that invaded the Sea of ​​Calms for more than one month.

Both the Civil Guard officers and IGN scientists have planned new reconnaissance flights today to try to see if there is a new eruptive mouth in El Hierro, which, say some scientists, would be "quite compatible" with the irregularities in the tremor signal in recent days, since it has gone from a very strong signal to a much lower, and vice versa in a matter of hours. What researchers are sure of is that along the line of the fissure eruption in Southern El Hierro, it is fairly easy to open and close eruptive mouths at any time, due to the solidification of materials.

On the other hand, the Pevolca confirmed yesterday that El Hierro seismicity continues with a maximum magnitude expected (4.6) and keeps the risk of a possible eruption in the north of the island, but not imminent in nature. In addition, the seismicity occurs in the same alignment (north / northwest and south / southeast) at the edge of La Frontera, but always at a depth of 15 to 27 kilometers. The evolution of the process, therefore, "remains stable, but leaves open the scenario of a possible eruption in the North, which, in any case, has not an imminent character." The Pevolca notes that the number of earthquakes and the frequency has decreased in recent days, although there was a significant record on the morning of Sunday, "with a magnitude 3.7."

Also CajaCanarias Civic Banking reported yesterday that they'll facilitate access to funds from the ICO-island of El Hierro, to finance the repair or replacement of facilities, industrial or commercial equipment, including those for sport and commercial fishing as well as private and commercial vehicles, agricultural machinery and work premises damaged by earthquakes and the volcanic crisis.

[Daughter of Time]

I wish I had a background in science so i could understand all the information you bring to us. However, the postings are much appreciated.

[Hervé]

***

Since July, IGN has officially logged 11,774 tremors at El Hierro... and counting since seismic activity is still ongoing!

Meanwhile, this thread just went by 60,000 viewings....


Thank you for your support and for dropping by! :wave:



http://i38.photobucket.com/albums/e105/CommentCrazyGirl/Smileys%20Hello%20Wave/greet013.gif



thank you.......

[Hervé]

I wish I had a background in science so i could understand all the information you bring to us. However, the postings are much appreciated.

Hello dear Chronos offspring!

Although not the best, Wikipedia gives some very good basics as far as terminology and fundamental mechanisms whether old or more recent.

Once that's gone through (the above) and after having skimmed through this thread for posts where I might have given answers to some other basics... you could still ask questions...

[Daughter of Time]

I'm afraid my questions would be rather convoluted since I'd be dealing with things I simply do not understand. But maybe one of these days I'll work up the courage. Thanks for the encouragement and thanks for your posts.

[sygh]

increditable pic, randles.
And Zo, not sure if I quite understand the graph but it looks like poli is resonating at a higher level. Looks like there's some lava movement. Is that right?

[Hervé]

increditable pic, randles.
And Zo, not sure if I quite understand the graph but it looks like poli is resonating at a higher level. Looks like there's some lava movement. Is that right?

Hahh! The billion $$ question... no one really freaking knows!

Thanks for asking though, as that allows me to summarize my few cents:

See, before the appearance of the harmonic tremor, the earthquake swarm had been going on for a long while... they were caused by something moving...

Then, the harmonic tremor appeared... caused by something moving... faster? Slower? Or just because making something resonate because of size? Amplification? Speed of flow?

Then Polly started bubbling happily... whether the harmonic tremor was saturating the equipment range or not...

I think that, rather than playing a giant pipe organ under El Hierro, she is playing accordeon... sometime squeezing at the top... other times at the bottom... all the while expelling Restingolitas or burps... in between snoozes.

All that to say that I think that magma has been in motion all the time and it's a matter of wether or not the environment resonates with the motion of magma/fluids/gases to generate a harmonic tremor... or not.

In short, it's like asking how many ways a debutant trompet player can go through without getting a sound out of the instrument... yet, air is still moved through the trumpet... I think that's a good analogy to the many speculations popping up all around as to what's happening... and, for the moment, only Polly knows.

That's for one side of that 2 cents coin, the other side is made of the withheld/missing data. For instance, individuals like GeoLurking, if given accurate locations for, and data from, all the seimometer/graph stations, could locate the source of the tremoring and whether it's South, North, deep, shallow and how many are there. Then we would get a better idea of what makes the harmonic tremor change tune.

Until then... and as always, your bet/speculation is as good as mine.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/54(33)(1).jpg&Width=635&Height=283,765625&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Image of the sudden release of volcanic gases recorded at 11:40 hours on 21 November. Involcan / Guardia Civil


Involcan Scientists detected a sudden gas emission south of La Restinga



DIARIOELHIERRO.E, writing (22.11.2011. 15:45 pm)

Scientists at the Institute of the Canary Islands Volcano (Involcan) have confirmed to the direction of Civil Protection Special Plan for Volcanic Risk in the Canary Islands (Pevolca) the observation of a new sudden release of volcanic gases observed by the Unit Guard Helicopter civil Canary at 11:40 pm yesterday, Monday 21 November. This visible emission of volcanic gases was located about 200 yards east of the main zone of gas emissions and volcanic material occurs south of the Restinga from mid-October 2011.



Upon returning to the area with scientists from Involcan, the intensity of the fumes disappeared, as has occurred in some previous occasions (November 4, 2011). These observations confirm the existence of shock or sudden pulses of gas by submarine eruptive activity south of the Restinga then disappear but are of great use to detect and locate new or mouths emission sources associated with this eruptive volcanic process. The geographic coordinates of this new sudden release of gases has been North 27 º 607547 - 991288 -17 º West, reports the Involcan.

[randles]

;) Here is the story so far.. ;) Crammed full of info from here at Avalon and the local press here on the Islands, I hope it brings back a few memories for those that have been following this thread :)


http://www.youtube.com/watch?v=LN5nzCPj9Nc

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/33(40)(1).jpg&Width=576&Height=384&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
SPECIAL SEISMIC CRISIS - 11/22/2011 (12:54 pm)

No sign of tremor in the northern part of the island.

The ground deformation, the results of processing the data obtained with the GPS stations show that the horizontal components of the deformation follows the same pattern of stability in previous days. Vertically, all stations in El Hierro show deflation, with the exception of the El Golfo which mostly point to a slight elevation.

DIARIOELHIERRO.ES, writing (22.11.2011. 12:54 pm)
The National Geographic Institute (IGN) has confirmed to the direction of Civil Protection Plan for Volcanic Risk (Pevolca) that the tremor signal on Monday held a slight decrease continuously throughout the day, with the appearance of very occasional pulses. From an analysis of the data, there is no evidence of a second source of tremor in the north.

On the ground deformation, the results of the processing of data from GPS stations show that the horizontal components of the deformation follows the same pattern of stability as in previous days. Vertically, all stations in El Hierro show deflation, with the exception of the El Golfo which mostly point to a slight elevation.

EARTHQUAKES

On the other hand, the IGN located on Monday a total of 24 earthquakes in the coast town of La Frontera. Only one of them, recorded at 2:02 hours, with magnitude 2.6 and a depth of 17 kilometers, was slightly felt by the population.

The largest of the events had a magnitude of 3.3 on the Richter scale at 18:02 pm (UTC), located approximately 6 kilometers from the coast and 21 kilometers deep.

The rest of the events recorded were located mainly in the area of the Gulf, aligned NNW-SSE in the sea at a depth between 17-23 km., Except at 19:20 located 15 kilometers deep in the sea El Julan, with a magnitude of 2.4.

In total, since the day July 17, 2011 11 769 events have been logged.

[Hervé]

Strongest so far (2.6 at 11:22):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-23_11-12.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-23.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-23_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg





Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning


http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Daughter of Time]

Hello Amzer Zo! i still haven't found the words to ask about all this intriguing stuff you're posting. One of the analogies above, #1626 started to make sense since it's a language i understand. However, I'm lost again. Still... thank you.

[Hervé]

Time to read your Tarot deck of cards... geology fashion... :P

See, if you stand your card deck on its edge and lift a small packet of cards from both ends, what you get in the middle is a text-book rift zone standing on your table...

That's the structural setting for the El Golfo area:


https://byfiles.storage.live.com/y1pF6CNrJdYjyvdDaCsfpRLMvNnnZio8p1XubVCS2d1P9sMtJzF-NtwBGcMa2vcE3JSqzTAytikzEU/Image-2011-11-22-18h50mn35.jpg?psid=1


That's the best text-book rift zone I ever came accross!


In the card deck model, each card represent fissure walls which, in nature, are usually glued together with solidified magmatic material called dikes.


The later seem to be constituting the straight-edged linear , N-W/S-E, thin-slice chopping of El Golfo's bottom.


https://byfiles.storage.live.com/y1pAargQbp7DkeLQ2ZVZeNNU17CvCDFaRxLT2yE5Kgy_8wavgpxXXqWqI7Sw_76ytc8UpOAjR0rZ8Q/Image-2011-11-22-18h55mn48.jpg?psid=1


Now... remember post # 1569 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=356916&viewfull=1#post356916) ?


... and the second set of linear structures at 1200 to the above El Golfo ones?


Which can be seen in the lower-left corner of the above picture.


So, if one keeps these two set of structures in mind and superimpose them on the cloud of earthquakes generated since July under El Hierro (see post # 1630 above, last graph)... there is a match in directions both at El Golfo and La Restinga: roughly the same N-W / S-E orientation.


However, joining these two sets of earthquake clouds over the island is a third one which is roughly at 1200 to these other two clouds.

Someting like this:

\
/
\


In other words, there is a structural control of the way magma is moving/emplacing under El Hierro. Magma emplacement is following the paleostructures of paleoriftings.

[Daughter of Time]

Amzer, I did the Tarot card thing you suggested. I got the 8 of Pentacles. The card is about working away in order to build success, commitment to a project and investing time, effort and energy in order to see it through. A great deal of care is given to this project.

So, what you do think of that? It sounds like what you are doing on this thread.

[Daughter of Time]

I think I know what you mean. You're talking about the moving plates, tectonic plates. Am I right? Or am I totally off?

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/6(83).jpg&Width=439&Height=222&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


El Hierro Registered 6 Earthquake in the Night

DIARIOELHIERRO.ES, writing (23.11.2011. 6:27 pm)

The National Geographic Institute (IGN) has registered on the island of El Hierro until 4:57 am this Wednesday, November 23, a total of six earthquakes measuring between 1.7 and 2.4 magnitude on the Richter scale.

The largest earthquake detected so far, has been the 2.4 magnitude. This earthquake occurred at 4:28 am this morning, in northwest Frontera and 17 kilometers deep.

According to the National Geographic Institute (IGN), and could be subject to change, the 6 earthquakes have been located in the northwest and west of the town of La Frontera, in the sea, and between 15 and 20 kilometers deep.

Two Earthquakes were felt yesterday

For its part, the National Geographic Institute (IGN) registered yesterday, Tuesday, two earthquakes of 3.3 magnitude on the Richter scale felt by the population. The first was recorded at 16:46 pm in the Northwest Frontera, 22 kilometers deep.

The second was located is also located in the northwestern Frontera and 17 kilometers deep.

[Hervé]

From Volcanocafe.wordpress.com (http://projectavalon.net/forum4/Tanganasoga Vulcano Inflation):

Tanganasoga Vulcano Inflation

Posted on November 22, 2011 (http://volcanocafe.wordpress.com/2011/11/22/tanganasoga-vulcano-inflation/)

This will be a rather short post. During the last day I have received some information regarding Tanganasoga. Apparently it has been known for some time, but held back from the general population of El Hierro, that Tanganasoga is suffering from rapid inflation due to magma injection.

The Inflation
Even though I had two individual sources stating this, I still wanted to have additional confirmation before I wrote about it. After all, now we are talking about a volcanic feature that can possibly cause fatalities. So to get a bit of confirmation I asked GeoLurking to make a plot of the current uplift. It seems to indicate that there is an ongoing inflation in the Tanganasoga volcano.

http://volcanocafe.files.wordpress.com/2011/11/tanganasogaplot.png?w=640&h=394 (http://volcanocafe.files.wordpress.com/2011/11/tanganasogaplot.png)
Image: GeoLurking. Inflation hypocenter of Tanganasoga

Carbon dioxide map
CO2 is one of the premier gasses when you try to judge a volcanoes state. If you have an increased emission from a volcano you have yet another precursor to a possible eruption. As can be seen on the image below the area of Tanganasoga is leaking CO2 quite badly right now. The northwestern red area is related to the Roques de Salmor gas-vent.
http://volcanocafe.files.wordpress.com/2011/11/gasmap.jpg?w=640&h=415 (http://volcanocafe.files.wordpress.com/2011/11/gasmap.jpg)
Image: Unknown creator. Several zones of high CO2 release in and around the Tanganasoga volcano

Full article: Volcanocafe.wordpress.com (http://projectavalon.net/forum4/Tanganasoga%20Vulcano%20Inflation)

**************************

Both the bulging of the ground and spots of CO2 releases are in accordance with magma emplacing along the structural build-up of the island as shown in post # 1632 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=361863&viewfull=1#post361863): the edges of the rift-zone, particularly the southwest side.


https://byfiles.storage.live.com/y1p6oKUnNyYQhnY_-X83MRWek6gx1U6scO0r2Lv7Teugq47Zq01Ibe8uLu-fr2xnphetR-b3_lAUFM/Image-2011-11-23-4h56mn2.jpg?psid=1

[Hervé]

I think I know what you mean. You're talking about the moving plates, tectonic plates. Am I right? Or am I totally off?

Almost there...

See post # 1127 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=340335&viewfull=1#post340335) for the name and extent of the known tectonic plates and links to other posts explaining how hot spots/mantle plumes work.

Usually, rifting occurs at the boundaries of plates moving away from each other and when they have moved away far enough, then an ocean forms in between with the rift zone now forming what's called a "Mid-ocean Ridge."

The Canaries being almost rigth smack in the middle of the African plate, another mechanism for the rift formation is needed.

The agreed upon mechanism for the formation of the islands is pictured as the rising of a large ball of magma resulting in an extension of the crust, tearing it apart:

From Series Sismica de El Hierro, PDF (http://www2.topografia.upm.es/grupos/sismo/data/CONTEXTOgeologico.pdf):


https://byfiles.storage.live.com/y1pIgEKTaCT7dIWddBwVrNS9VCNBEkCi8wI2WT7Rau_vkOGZwhCo17KGeJ6qxKp4x2Fp_wU-BDJNTY/Image-2011-11-23-6h9mn53.jpg?psid=1


https://byfiles.storage.live.com/y1pEtJiMaj33vd01uTmeWbeHwiG_e4X6n91xssapIWqtfa6rqv2kvfubKpCvMMpuXS-lmruzZy8avA/Image-2011-11-23-6h10mn38.jpg?psid=1


The dikes emplacement, subparallel to the edges of the rift zone, is what is seen chopping up the bottom of El Golfo in thin slices orientated N-W / S-E.

[randles]

http://www.larazon.es/images/uploads/image/f0/f2/342297/c617x266_volcan3.jpg?1321982401
Picture where you can appreciate a magma emission point in the direction of the fissure in which it is "engaged" the volcanic cone

http://www.larazon.es/images/uploads/image/f0/f2/342296/c617x266_volcan2.jpg?1321982277
New images reveal an emission point in the fissure eruption of El Hierro

http://www.larazon.es/images/uploads/image/f0/f2/342298/c617x266_volcan.jpg?1321982316

This fissure is "engaged" the volcanic cone and main broadcast center from the eruption that began in mid-October. The intense bubbling points have already appeared on other occasions, as was observed on 4 November. This new process of degassing pulses confirms the existence of sudden shock or gas by submarine eruptive activity south of the shoals that disappear later, but they are of great use to detect and locate new sources of emission or associated with this eruptive mouths volcanic process.

Institute scientists volcanological de Canarias (Involcan) have confirmed the direction of the Civil Protection Special Plan for Volcanic Risk in the Canary Islands (Pevolca) the observation of a new sudden release of volcanic gases by the Unit for Helicopters Civil guard in the Canary Islands at 11.40 hours on Monday. This visible emission of volcanic gases was located about 200 meters away to the east of the main zone of gas emissions and volcanic material occurs south of the Restinga from mid-October 2011.

Following these observations, we proceeded to the shot and thermal imaging in air mobile position associated with this significant and degassing again by volcanic activity in human and technical resources of Involcan under the partnership agreement between the two institutions on the implementation and use of thermography to strengthen the monitoring volcanic Canary Islands. Upon returning to the area with scientists from Involcan, the intensity of the fumes disappeared, as has occurred in some previous occasions (November 4, 2011).


http://www.youtube.com/watch?v=_XNa2YmIGX0

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/1114385.JPG&Width=448&Height=409&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Epicenter of the earthquake of 2.6 degrees today in El Pinar


Earthquakes return to El Pinar

DIARIOELHIERRO.ES, writing (23.11.2011. 12:22 pm)

The seismic activity that has not stopped a single day in La Frontera, seems to have returned, at least temporarily, the municipality of El Pinar, who from the submarine eruption of La Restinga had been a notable decrease in the number of earthquakes.

Thus, the volcano monitoring network monitoring 24 hours of National Geographic Institute (IGN) has filed today in this town of El Hierro two earthquakes of 2.0 and 2.6 magnitude on the Richter scale. The first was located at 08:10 am in the west of El Pinar and 18 kilometers deep.

The second quake today in this town in the south of the island occurred at 11:22 pm in the southwest of El Pinar and 13 kilometers deep.

The other earthquakes have been located in the northwest and west of Frontera, between 15 and 20 kilometers deep.

According to the National Geographic Institute (IGN), and could be subject to change, so far there have been 11 earthquakes in El Hierro on Wednesday.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/111(74).JPG&Width=635&Height=277,8125&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


The Pevolca allows selective opening of the tunnel in Los Roquille

The direction of the Civil Protection Plan for Volcanic Risk (Pevolca), has authorized the selective opening of access roads to the tunnels Roquille to reconcile the needs of users while avoiding the risk of landslides in the slopes adjoining the tunnel, as well as the risk involved in driving on the road to the summit in bad weather.

In this sense, at the request of the City of La Frontera and El Hierro council establishes the selective opening of the roads mentioned, at the direction of Frontera - Valverde at 6:30 and 7:00 pm, and at 19:00, 19:30 , 20:00, 20:30 and 21:00 hours. Also it enables the opening, meaning Valverde-Frontera, at 6:45 hours and at 19:15, 19:45, 20:15, 20:45 and 21:30 hours, reports Pevolca.

The selective opening allow vehicles that are at that hour at the entrance to the road that now remain closed between 18:30 pm and 7:30 am, will travel in convoy and with the monitoring of council highways staff El Hierro, supported by Security Forces, which use extra caution and attention to evidence of possible landslides

EARTHQUAKES

On the other hand, the National Geographic Institute has confirmed this morning to address the Civil Protection Plan for Volcanic Risk (Pevolca) during yesterday 35 earthquakes were located mainly in the area of El Golfo in the alienation NNW -SSE. Only two of these movements were felt by the population with intensities II and III.

The first occurred at 16:46 (UTC), located approximately 1 km from the coast and 22 kilometers deep and had a magnitude of 3.3 on the Richter scale. The second, with the same magnitude, occurred at 21:08 pm (UTC) located approximately at the coast and 17 kilometers deep.

In total, since the day July 17, 2011 there have been registered 11,804 Earthquakes.

STAIN

The stain caused by the eruption follows its course underwater off the coast of La Restingait was visible throughout the day. In the reconnaissance flight that was carried out by the IGN staff on board the helicopter of the Canary Islands could be seen in his head a light brown color. The green hue extends superficially focusing on large areas or circular shapes, as on previous occasions.

DEFORMATION

The results of processing of data from GPS stations show that the horizontal components of the deformation maintain the same pattern of stability, with some slight trends irrelevant. Vertically, all stations in El Hierro show deflation, except those of El Gulf that show stability or a slight rise in those located further west.

TREMOR

The amplitude of the tremor signal has remained constant throughout the day with minor variations not relevant. No evidence of a second source of tremor

[Hervé]

From space on November 22sd:


https://byfiles.storage.live.com/y1pBEwFJEtgOTA0tIDvjeHLKh0WWt_eU6zagcjl0e6VoyjkGpttL5K-YqO1ucg6t0QI8DFaTs0DPmk/Image-2011-11-23-4h34mn57.jpg?psid=1




... and today, November 23rd:



https://byfiles.storage.live.com/y1pUVztPjtLErSB3UQw0THsdJ8QkAjRmB2Q8l9Zg_-0U4zi6O1HeHblRR7p_CU5Gdh9XfLgYztkoDE/Image-2011-11-23-18h3mn49.jpg?psid=1

[Hervé]

Location of some of Polly's many heads:


https://byfiles.storage.live.com/y1p7pJ75dyuGhoU7wFzSHj0-ScTgYI4K14eFlGrDNow46hGoL4DG8e6OO3e1jQy6JLLGihGQhHkL8g/Polly's%20many%20heads-02.jpg?psid=1

[Hervé]

Strongest so far (2.8 at 20:54):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-24_20-21.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-24.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-24_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Daughter of Time]

And indeed, Amzer Zo, you are tirelessly updating us with your postings. Thank you. Blessings to you!

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/6(84).jpg&Width=500&Height=375&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


The Museum of Barcelona presents the first 'restingolitas'

Europa Press, Barcelona (24/11/2011. 07:30 am)

The Natural History Museum of Barcelona, also known as Museu Blau, exhibits from Wednesday the first rocks from the underwater volcanic eruption on the island of El Hierro, as reported by the City Council of the Catalan capital in a statement.

The stones were collected on October 19 in the Sea of ​​Calm in the south of the island, by a neighbor called Peter Canomanuel, who has decided to donate to the museum for exhibition.

The material found has been dubbed 'restingolita', for being near the village of La Restinga, and is characterized by a dark surface formed by basaltic magma that cooled very quickly, which provides a greater contrast with light colored interior and composed of volcanic glass with high silica content.

The museum displays has stated that after they have found this double-ended, so that the exhibition will include an explanation of the stone and a recent chronology of the eruption.

The rocks are considered one of the youngest in the world, and have been integrated in a display case within the scope of Rocks and Minerals from the museum's exhibition Living Planet.

[randles]

http://img.allvoices.com/thumbs/image/609/480/87805628-ship-sails.jpg


Earthquakes return to the South of El Hierro

The earth shook again south of El Hierro. The hypocenter, one just 13 miles deep, relatively more superficial than those occurring north of the island, which is usually around 20 kilometers. This has meant that, although its magnitude was not exceptional (2.6 the shallowest) have been felt by the population.The relative novelty (in that zone earthquakes began four months ago) makes people wonder if re- will open new mouths. A council spokesman explained that the island's south, in front of La Restinga, there is a fissure process, so you can not talk of mouths themselves.

Technicians from the National Geographic Institute (IGN) do not believe that, for now, this apparent novelty has a special significance on the evolution of the phenomenon. In general, the number of earthquakes is stable every day.

No islet off the coast

The potential arising island by submarine eruption in the area of ​​La Restinga on the island of El Hierro, "it will surface," according to volcanologist statements and vice president of the Bar Association of Geologists (ICOG), José Luis Barrera, collected by Europa Press.

For Barrera, as they are evolving events do not seem to come to see the popular rooster tails or eruptive plumes. This indicates that the submarine crater of the volcano continues about 200 feet deep. "It is possible that part of the structure has collapsed, as the lava running down the canyon and the cone does not grow in height," acknowledged the vulcanologist.

The volcano of La Restinga came to 300 feet deep, and 14 days, rose about 100 meters, a growth rate of about seven meters per day. "If progress in height would require that the base is broadened considerably to be stable in the vertical growth, or that is a huge volume of material that does not seem to happen", admits expert.

These statements further cool the mood of the 10,900 inhabitants of the island, which would be at the birth of an island the only possible compensation to the disorder that have been subjected in recent months, first by the seismic crisis and then by the eruption underwater. The expansion of a spot of volcanic material that covers most of the coast prevents fishing and diving, two of the main sources of income for the island.

[randles]

Here are just some of the images released today that were taken yesterday by the Guardia Civil in a flyover of the stain in a Helicopter...



https://lh6.googleusercontent.com/-LIIQ1hD2mC8/Ts4eFJAzEEI/AAAAAAAAAqE/ZDHGWOn1hxM/s512/pic-23112011-1.jpg

https://lh5.googleusercontent.com/-wdUAMl_Sluc/Ts4eESZRfsI/AAAAAAAAAp4/qsj2r66P0j8/s512/pic-23112011-8.jpg

https://lh6.googleusercontent.com/-S-gljclSoO0/Ts4eF2-I90I/AAAAAAAAAqc/LhKHCKt7Ky0/s640/pic-23112011-4.jpg

https://lh3.googleusercontent.com/-9G3cF6zF3e4/Ts4eFiWiVTI/AAAAAAAAAqY/N3TwfY-Hu4I/s640/pic-23112011-3.jpg

https://lh3.googleusercontent.com/-FX0eIff1OvE/Ts4eFOLQr6I/AAAAAAAAAqI/nAtWY_s3p40/s640/pic-23112011-2.jpg

https://lh6.googleusercontent.com/-hnJQwUDE-XE/Ts4eEoV9KMI/AAAAAAAAAp8/TbY7gxaRuBc/s640/pic-23112011-9.jpg

https://lh5.googleusercontent.com/-IelTMEEBhFM/Ts4eHMbWK4I/AAAAAAAAAqw/AVaVCYOSD-k/s640/pic-23112011-7.jpg

https://lh6.googleusercontent.com/-yoN2lsfkv2Y/Ts4eG_H0e0I/AAAAAAAAAqk/uYQ075-LRBM/s640/pic-23112011-6.jpg

[Hervé]

Here are just some of the images released today that were taken yesterday by the Guardia Civil in a flyover of the stain in a Helicopter...


[...]


I have a question about the date of these stunning pictures...

According to this page, http://www.flickr.com/photos/noticiacanaria/6352766289/in/photostream, these pictures were released on the 17th of November... hence taken even earlier...

However, according to this page, http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446#!/photo.php?fbid=293865563980176&set=a.174701045896629.39574.134042953295772&type=1&theater, they were taken on November 23rd in the morning....

[Hervé]

Locations and perspectives...


https://byfiles.storage.live.com/y1phuPUsponneNq3jDUO-CnyO-KGr6SC4REVNBxxog_Ho18SbYVz-jdHNAGFV62yFDGEZzuSoBjoFo/Guardia-2011-11-23-11.jpg?psid=1


https://byfiles.storage.live.com/y1p8u5dauoQvCE03Fj_ILr0KYfJdLTkceFVL5JVy4-z8_8nBLLuUGA4HVyKSdQhGBjy8VVLSIyvQLM/Guardia-2011-11-23-06.jpg?psid=1

https://byfiles.storage.live.com/y1pGv5egbrPlKSYiVpBuPAorXfuCsfqOl08FBB3IY2lkY544msYwwoWolNugCmv7XzOLt1KsQEtW7g/Guardia-2011-11-23-02.jpg?psid=1

https://byfiles.storage.live.com/y1pE0NKfPlaHMrO3TPtJpFLEi8JDe2egu3_vSZLTvmXmCSuZLgNiuG7pyU0YnCyD1J-A7inFaSqMWA/Guardia-2011-11-23-12.jpg?psid=1

https://byfiles.storage.live.com/y1pcYHo0edNYvnVTnIAYr1mkZ7qANASlXhFINUm9CTNIVLiuUHVc0Lsv09f7wxd2ObYw2RBaIjh10g/Guardia-2011-11-23-03.jpg?psid=1

https://byfiles.storage.live.com/y1pwcHKuYcIvkq4nqeL6dP6QQsSI74xBjU-6qUDcv85AlDHPB_-UxwuqfhLItf0T6tYvMtLDldexSc/Guardia-2011-11-23-01.jpg?psid=1

https://byfiles.storage.live.com/y1pBEjnGteQkGSJ6_ScHwW_0TDMD9g4qhN8LWjZJeUoekWTB7C1Qt0lVc2-1Avmu6KK67QsOCQWz40/Guardia-2011-11-23-09.jpg?psid=1

https://byfiles.storage.live.com/y1pE0NKfPlaHMrRfluneNH9MP1H4ikVcKZgynqytLs30nGLWNODje9DHT2HT2-WgXRP8BLmhhYU6rc/Guardia-2011-11-23-08.jpg?psid=1

https://byfiles.storage.live.com/y1p53sgkOeMQTfrA81toUNgv3zpWFekX2L_jpqPLr3OjcAik6D0SEieKcJDOMS9kbSWUy2tgOgaq48/Guardia-2011-11-23-04.jpg?psid=1



... Polly's definitely churning while the harmonic tremor is on a low profile and the earthquakes are reducing in numbers and intensity... go figure!

[Hervé]

Today's fuzzy picture from space:


https://byfiles.storage.live.com/y1pcM8ID5CrdQyufjfh5HF1ZdsJzknZETuLn0lEk1ybqUpPJnRDSf_VxThpIxshy_aA96QHXGuJODw/Image-2011-11-24-18h18mn41.jpg?psid=1

... space wind shaking the satellite?

[Bridey]

So.....when the harmonic tremor decreases along with the earthquakes, Polly goes nuts. That's been happening all along right? I thought I had a good understanding.....Those pics are amazing though. I had no idea those volcanic cones where there behind La Restinga. Looks like Polly is spewing all over the place eh?

Sometimes when I read the translated paragraphs I have to concentrate really hard to understand it. I find I can easily miss something important reading the info sometimes. When the english is a little backwards my mind feels so sluggish. It's so funny. My brain goes into slow motion. I appreciate all the info though. It's just my brain I'm sure! ha!

[Hervé]

Strongest so far (3.1 at 02:35):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-25_02-03.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-25.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-25_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?




Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning



http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg




New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!


http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg







Location of the EQs for the last 10 days:


http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg





Since the beginning


http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg

[Daughter of Time]

Hello Amzer Zo! I truly admire your dedication in bringing this information to us. Once again, thank you.

[randles]

Amzer Zo !! Goodmorning !!

I must admit, when I saw the pics yesterday, I was absolutely sure that I had already archived them a week or so ago..
Streaming was coming through announcing that they were newly released...
confirmation finally came when I compared each one with Earthquakereport.com via their flicker page as uploaded and confirmed by Joke...



Here are just some of the images released today that were taken yesterday by the Guardia Civil in a flyover of the stain in a Helicopter...


[...]


I have a question about the date of these stunning pictures...

According to this page, http://www.flickr.com/photos/noticiacanaria/6352766289/in/photostream, these pictures were released on the 17th of November... hence taken even earlier...

However, according to this page, http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446#!/photo.php?fbid=293865563980176&set=a.174701045896629.39574.134042953295772&type=1&theater, they were taken on November 23rd in the morning....

[randles]

Hello Bridey, Good Morning !!

I agree with you about the translations.. sometimes translating them into English can be quite a task. Unfortunately the 'lifting' of translations comes from Media Sources that have been published in either Catalan/Espanol/Canarian - the 2 main dialects of Spain, and the language of the Islands; where although we speak Espanol here it is with a different dialect and we use different words here to describe different things.
We are completely blessed here on this thread to have Amzer Zo who has a wealth of life experience in dealing with this phenomemon to translate 'jargon' into plain english via pictography and 'laymans' terms.
Whereas I..just live here...

Despite all of the information presented here, and all of the 'sense' that we derive from it, the feeling here is one of despair and complete resentment towards the inability of the candidates (on the runup to the election) to formulate and stick with some kind of fundamental strategy that no one would commit to as it would have had to have been adhered to after the Election campaign. (Please read Sergio Gutteriz - Editor of Diario EL Hierro).
Based on Amzer Zo's philosophy of 'Always follow the money', the biggest highlight that there has been here after the Elections was the transportation of the new Wind Turbines for the Project that has been in the making for over 10 years of self substainability, and the occasional photograph of Finnish Tourists 'popping' across to El Hierro on a Cruise Liner.

Meanwhile the fishermen still are unable to fish properly. More than that, they are unable to provide the daily food for their Wives, Sons, Daughters. Elderly people who have a 'no pasanada' attitude, are worrying for their own young. Light, heat and water still has to be paid for, and at the moment this is in the form of 'credits' which will ultimately have to be cleared. Top all of that off with the anxiety and pressure of a close knit community whom are shuffled from pillar to post, bound and gagged from public interviews of personal experiences and anxieties, and the daily levels of unemployment climbing due to the inability to provide work as there is no longer a 'service' industry in operation.

However, I have written before of how it is here. Of how the Islanders live.

LOVE
FAMILY
GOD
LOVE
FAMILY
GOD
LOVE
FAMILY
GOD

over and over and over again. To be sure this strength of mind and peace in spirit will serve the Islands well as it has done for centuries. It took Spain 100 years to conquer the Island of Tenerife. It took 100 years to break their spirit; and still they fight for their birthright, their heritage...

In short, language is no barrier, translation is ineffective, it is the Love, and Light that we all send (thanks here to Caltz and Sygh) to the Islands, that will ultimately see them through this time, and the extraordinary miracle of Mother Nature that is rewriting our History books Here.

Have a beautiful Day !!



So.....when the harmonic tremor decreases along with the earthquakes, Polly goes nuts. That's been happening all along right? I thought I had a good understanding.....Those pics are amazing though. I had no idea those volcanic cones where there behind La Restinga. Looks like Polly is spewing all over the place eh?

Sometimes when I read the translated paragraphs I have to concentrate really hard to understand it. I find I can easily miss something important reading the info sometimes. When the english is a little backwards my mind feels so sluggish. It's so funny. My brain goes into slow motion. I appreciate all the info though. It's just my brain I'm sure! ha!

[randles]

http://www.diariodeavisos.com/wp-content/uploads/2011/11/Burbujeo-zona-volcan-La-Restinga-El-Hierro-231111-70.jpg
Appearance of the stain on the eruptive area Wednesday. | DA

DIARIODEAVISOS.COM | SANTA CRUZ DE TENERIFE

The National Geographic Institute (IGN) has confirmed the direction of the Civil Protection Plan for Volcanic Risk (PEVOLCA) during yesterday there were 21 earthquakes on the island of El Hierro, none of them felt by the population.

The largest recorded magnitude was 2.6 on the Richter scale, an event occurred at 11:22 hours southwest of El Pinar at a depth of 13 kilometers.

Most movements are located in El Golfo, aligned NNW / SSE in the sea at a depth between 10 and 25 kilometers. Outside of this area and also above the earthquake was located one west of El Pinar at 08:10 hours at a depth of 13 km and a magnitude 2.0 on the Richter scale.

In total, since the day July 17, 2011 11 824 events have been found.

http://www.diariodeavisos.com/wp-content/uploads/2011/11/Burbujeo-zona-volcan-La-Restinga-El-Hierro-231111-214.jpg

Tremor

The amplitude of the tremor signal has remained constant and low throughout the day with some slight increases in amplitude. It also confirms that there is evidence of a second source of tremor.

Deformation

In the horizontal components not seen any clear trend other than the regional. Vertically all stations show a clear tendency to collapse and those of El Golfo appear to indicate stability.

Evolution of the stain

Throughout the day has been increasing in size the area colored green emission increased, covering the end of the afternoon, a large area of ​​the west coast and northern part of the coast.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/443(4).JPG&Width=500&Height=328&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0

HIGH RISK FOR SPAIN IN THE EVENT OF A TSUNAMI

Europa Press, Santander (25.11.2011. 09:30 am) http://www.diarioelhierro.com/

Experts at the International Meeting of UNESCO about tsunamis have warned on Thursday at the Institute of Environmental Hydraulics at the University of Cantabria "high risk" that runs across Spain in case they occur an event of this nature as they do not have a Warning System or any protocol in place.

Based on reports prepared by the Institute of Environmental Hydraulics at the University of Cantabria, researchers have warned that although the society is unaware, the coasts of Spain "historically" have suffered the impact of "large" tsunamis, being the most affected areas the south-western Atlantic basin, especially the Gulf of Cadiz and the Mediterranean coast. These reports have been published in scientific journals such as Natural Hazard and Earth System Sciences.

More than 80 researchers (geologists, seismologists, physicists, engineers, instrumentation and communications experts or natural hazards) of 40 countries have gathered between 22 and 24 November at the Institute of Environmental Hydraulics at the University of Cantabria (IH Cantabria), specializing in the area of ​​excellence 'Water and Energy' of Cantabria Campus (ICC).

This meeting of the Intergovernmental Working Group to develop a tsunami warning system in the Eastern Atlantic, Mediterranean and Connected Seas (IOC / NEAMTWS), coordinated by UNESCO, includes among its participants with the researcher and professor of IH Cantabria the University of Cantabria (UC), Mauricio Gonzalez, who coordinates the working group 'Modelling and Risk'.

Gonzalez, in an interview with Europa Press has reported that, although most countries are developing their systems, "Spain is the only one who has not begun," "has not even started because there is no institution responsible for Warning System. "

"It can happen today or tomorrow"

According to the researcher has said IH Cantabria, the company''believes that these events occur every hundred or thousands of years,''but the truth is that''may happen today or tomorrow,''as has happened with emerging volcano island of El Hierro, exemplified.

People "have no idea" that tsunamis have occurred in Spain over the history even after the tsunami occurred in Indonesia in 2004 and recently in Japan, has started learning society "more" of the "dangers" of these events, said Gonzalez.

However, "we need to raise awareness, assess risk and meet the most vulnerable" to later implement in these areas "emergency protocol" for, at any given time "to react to local level," noted above.

In early 2012 Britain, France, Portugal, Morocco, Italy, Greece and Turkey, among others, will begin to issue their warning signs, and they all meet in the European system of alerts, but in Spain, there is a lack of a system , should there be a tsunami in Algeria or Cadiz - areas affected by faults - "when it arrives we can no longer give an alert and we will over react," he warned.

Gonzalez pointed out that all these countries " are developing systems" and launching "minimum requirements" to alert of these emergencies, while "Spain does not do anything," he criticized.

"In Spain, at the time the Civil Protection told a tsunami has occurred, for example, in Italy, will not be able to do anything, because there is no emergency first, second, because people will not be ready, what will you do, "Gonzalez has asked.

True, he explained, that the risk "areas exist in lagoons promptly" and although there have been no evidence yet on the whole coast "as it should do," have been studied areas such as Cadiz, Huelva and the Balearic Islands.

IN THE MEDITERRANEAN it will cause "major problems"

At the moment we know that in the Atlantic the risk is "high" and while in the Mediterranean "is not so high" if or when the tsunami occurred in one height of summer "would have major problems on the beaches, ports and the coast" due to the large number of citizens and tourists congregate in these areas, has detailed Gonzalez.

IH Cantabria investigator stressed that these events are occurring over time, "every ten years is a rather large and every 30 or 40 a very big" however "are forgotten generations and away of what has happened, "but if repeated in Cadiz as a tsunami in 1755 - known to exist through sedimentological studies -" it can become worse than happened in Indonesia. "

In 2012, when other countries start their warning systems, "if an alert comes to Spain we will not know what to do, so the danger is greater to know that an alert if it will give us just because we are not prepared, so run the risk, in that case, tragedy strikes, "he warned Gonzalez.

Alert System is Necessary

Therefore, this researcher has said that Spain needs a local warning system to detect earthquakes instruments underwater and thus tsunamis, as well as numerical modeling of execution of events that can occur.

Thus, if warned that a tsunami is produced in Turkey and we know its magnitude, it will "react" as they know how to act through the models made by computer.

Gonzalez has indicated that to develop this system to be studied Alert numerical models and the fault location and then evaluate and draw up risk maps, and with these, which are like "pictures of the reality of the situation," power measure not only the risk of high waves but to know which areas may be affected socially.

If that system was in operation at the time of the alert would trigger a "protocol", which also has to develop, which would involve law enforcement, emergency services and government.


..............................

[randles]

http://www.diariodetenerife.info/typo3temp/pics/9666cf3a16.jpg


El Involcan continues to record an increase in the diffuse emission of carbon dioxide by the volcanic system of El Hierro

25NOV11 (11.43 UTC) Since last July scientists of the Institute of Technology and Renewable Energies (ITER), an agency of the Cabildo of Tenerife, and is now part of volcanological Institute of the Canaries (Involcan) have performed over 8500 steps diffuse flow of carbon dioxide (CO2) in the island of El Hierro through numerous scientific campaigns on diffuse volcanic gas emissions that have materialized over the entire surface of the island of Isla Meridian. To date, the results reflect the record of an upward trend of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcano island of El Hierro has reached 2186 ± 87 tons per day, an amount equivalent to 6 , 34 times the normal average value considered for the diffuse emission of carbon dioxide (CO2) in the island of El Hierro (345 tonnes per day).

The purpose of these scientific surveys to assess spatio-temporal variations of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcanic system island of El Hierro in the context of the recent seismic-volcanic crisis Island Meridian . On the other hand, realize the reasons for this type of scientific stem from the inability to obtain such information through permanent instrumental networks, to be absolutely convinced that the gases are the driving force of volcanic eruptions and the importance of carbon dioxide (CO2) in volcanic surveillance programs because it is the second major component of volcanic gases after water vapor, and its low solubility in molten silicitados - magma - making carbon dioxide (CO2 ) to escape with their ease of volcanic systems in depth.

These scientific surveys have failed to materialize due to MAKAVOL project "Capacity Building of R + D + i + d to contribute to the reduction of volcanic risk in the Macaronesia (MAC/3/C161)" which is being co-funded by the transnational Cooperation Programme of the European Union Madeira-Canary-Azores (MAC 2007-2013) and the collaboration of the Island Councils of Tenerife and El Hierro.

Involcan is an institution demanded unanimously by the Senate (2005), Parliament of the Canary Islands (2006) and House of Representatives (2009) with the aim of contributing to improving and optimizing the management of volcanic risk in Spain.

[randles]

The island's volcanic activity, a window to the center of the Earth


HOT IRON

"It grew out of the sea, a huge rock sort of remained in the air a few seconds before diving again. Can you imagine the impression ??? ... and we all take to screaming, some applauded."

It is the story of an eruptive episode south of the island of El Hierro that a friend told me a few days ago. I believe this enthusiasm reflects very well the attitude of the average citizen at the sight of the energy unleashed in the great natural phenomena, like volcanism, awe, respect and emotion mix. El Hierro, Canary Islands as a whole, are windows through which we can overlook the great heat of the Earth's interior. A planet that, despite his advanced age (about 4530 million years) continues to enjoy excellent thermal youth. We are its students, and we are still amazed, that after all this time, it is expelling heat, 95% of its core cast follows. This is deep heat that ultimately propelled through the air Rocks who applauded by the islanders: a mixture of water, gases and porous rocks such as those found these days floating near the island.

On Earth about 500 active volcanoes of which about 20 are usually erupting simultaneously. Some centers, like the Italian Stromboli or Kilauea in the Hawaiian Islands are in nearly continuous eruption, others, such as volcanoes canaries, they take their time between eruption and staining. It has been 40 years since the Teneguía volcano on the neighboring island of La Palma, and no less than 218 since the eruption of Lomo Negro, the last eruptive episode in El Hierro.

Thermal anomaly. The parsimony with which magmas are issued in the area of ​​Canary betrays a weak thermal anomaly, perhaps the residue of the construction of the archipelago from the seabed, 4,000 meters deep, certainly nothing like the Hawaiian waste, well-fed a continuous stream of hot material coming from the same core. As in El hobbit Bilbo Baggins said not to trust the sleeping dragons, just as wary of volcanologists volcanoes rest. Some idle periods can last for thousands of years, so it is usually classify as any active volcano that erupted in the last 25,000 years, and only then pass to the extinct category. As the dragons (and some), the dormant volcanoes sometimes have bad awakening.

Vesuvius catastrophic eruption wiped out with the unsuspecting inhabitants of Pompeii, who did not know they were living under a volcano. This bad behavior has its scientific explanation: during a long rest period, the magma beneath the volcano cools, and in doing its viscosity increases. After a time, the magma will become rock without having known the light of day, but if this deposit becomes pasty and cold, before cooling definitive an injection of new magma, there will be a major eruption, in which the new magma, hot and fluid, provide a vehicle to the former, which take on wings in the infamous burning clouds, known for its speed and destructive power.

And what should they do volcanologists to signs of instability that presage an eruption? First, tighten the control over the area: more measures of volcanic gases (CO2 indicates that the magma chamber is closer to the surface by lowering the pressure, the gases are separated from the magma) and greater control of seismic tremor, produced by magma and gases to rub against the rocks in its ascent. A set of seismometers can get the critical information: the depth of magma ascent and speed, which separates the tranquility of the need for evacuation.

A classic dilemma. Evacuation is, a fearsome word: What should I be carrying,? Â How much time for? I give back the floor to my friend Herrea .. "I ​​understand that it's hard for authorities to take decisions, but also it is true that we have suffered damages as a result of these decisiones...The Classis dilemma: act with a huge margin of safety, evacuate preventively before the situation before it becomes more dangerous, or defer the Evacuation until after risk assesment. Loss of life one that could lead even a process for manslaughter, as was taking place in Italy after an earthquake causing 308 deaths in 2009.

The most glaring case of excess of caution occurred in 1976 on the Caribbean island of Guadeloupe. After months of ominous seismic tremors, similar to those recently experienced El Hierro, began an intense eruption in the volcano of La Soufrière, famous for his bad behavior: their eruptions often ended in fiery clouds. The 70,000 farmers living in the volcano expectantly awaiting the advice of scientists. Unfortunately, they do not agree. Theorists have recognized new magma said on emissions, and thus warned of the danger of burning clouds. French vulcanologist Haroun's famous Tazieff, tanning in a thousand eruptions, denied.

In the end, caution prevailed, and the farmers were evacuated, but after three months in which the danger did not materialize, they returned angry, to live under the volcano. That is, excessive caution is not always the best Policy, because the successive evacuations erode the confidence of the inhabitants of scientists and local authorities. My fellow Mexican Juan Carlos Gavilanes, which is responsible for monitoring the dangerous volcano Fuego de Colima upon a survey of its farmers in the majority by stating that the greatest danger of the volcano were .. ... the scientists.

On this island there will be glowing avalanches, and if the magma reaches the surface will probably end in an eruption Teneguía quiet type, who will have more a of tourist attraction than a significant risk to its residents.
Probably ..

[randles]

The CIAC have designed an instrument to monitor the emission of gases in El Hierro

Toledo, Nov 25 (EFE) .-

The scientific team of the Research Centre for Atmospheric and Climate (CIAC), unique in Spain and located in Toledo, has designed an instrument, the spectrometer will measure next week for emissions of toxic gases in volcanic activity the island of El Hierro (Canary Islands).

The director of the CIAC, the Cuenca Alfonso Saiz-Lopez, Efe reported that the Ministry of Public Works requested the National Institute of Aerospace Technology (INTA) a study to quantify the toxic gases being emitted into the atmosphere by volcanic activity which, in turn, INTA has taken the task as CIAC.

Thus, the instrument designed and built by the scientific team based in the circle of Toledo next week will fly in a plane on the island of El Hierro and giving full details of the toxic gases such as carbon monoxide and carbon oxide sulfur.

It is a tool "only," said Saiz-Lopez, that refracts light to measure the absorption of gases into the atmosphere as "very accurate".

"It is unclear whether or not the volcano encouraged to come to the surface," the researcher said, but "what is clear is that it is having a series of releases" of toxic gases, according to data which he has had access, has said, "are important."

The spectrometer will also measure the height to which they are pumping gas and reconstructed in three dimensions the different areas where gases are being emitted.

According to the latest National Geographic Institute, from July 17 were located a total of 11 699 seismic events on the island.

EFE

[Bridey]

You've been busy this morning Randles! Thanks for all the info......I know the translations are lifted from somewhere else. I still understand it and appreciate it. I just may need to read it a couple times. I know translating word for word would be impossible. Wish I could speak spanish! I can feel what your saying about the people of the islands throughout this whole thread. No doubt they are some amazing people. Must be so fantastic to live there.

I wake up in the morning and have my coffee to this thread. It's pretty much the only thread I read on this site now. I look forward to this information. Perhaps one day I can visit one of the islands. Anyways, enjoy your day Randles. Peace and love to you....

[randles]

PEVOLCA allows the return home of all the residents evacuated

DIARIODEAVISOS.COM | SANTA CRUZ DE TENERIFE

The direction of the Civil Protection Plan for Volcanic Risk (PEVOLCA) today authorized the return home of all the neighbors who remained evacuated in the area of Las Puntas and the Pozo de Las Calcosas and the opening of the Eco-museum and El Lagartario and the reopening of the roads which remain closed at night (HI-5, where the tunnels Roquille, HI-500 and HI-50). However, it should be stressed that it maintains the red light, Level 1, for La Restinga, in the municipality of El Pinar, and yellow for the rest of the island.

The only Civil Protection extraordinary measures that are currently maintained the ban on access to the beaches of Puerto Naos and Tacorón and maritime exclusion zone.

However, keeping the red light, Level 1, for La Restinga, in the municipality of El Pinar, and yellow for the rest of the island. The only Civil Protection extraordinary measures that are currently maintained is the ban on access to the beaches of Puerto Naos and Tacorón and maritime exclusion zone, Informed by the Government of the Canary Islands in a statement.

Regarding the Tunnel of Roquille it should be noted that the Department of Infrastructure of Road Systems will create a work area where there were defects in the shotcrete, so will this institution, together with the City Council of El Hierro, who will have to specify when and how to open the rail, in Frontier in the direction of-Valverde, which remained closed for the studies to be performed.

These decisions are made due to the reduced chance to occur high seismicity of magnitude exceeding 4.5 on the Richter scale, the maximum level established for the IGME that could produce landslides on the slopes of the tunnel. In addition, the earthquakes that are occurring are occurring at a depth of more than ten miles.

On the other hand, proceeded to place three accelerometers in the escarpment of the slope adjacent at Frontera tunnel, which allows greater control of potential landslides.

As preventive measures, will remain in El Hierro equipping the Red Cross and the EMU, as well as network communications, transport and port stations Advanced Command (PMA).

Evolution Process

Regarding the crisis volcanic earthquake PEVOLCA Scientific Committee reported that we are in a more relaxed state because in the past fortnight there has been no significant seismic activity, the magnitudes of the movements have been below 3.7, the horizontal deformation does not have a vertical pattern and remarkably show a downward movement with the exception of El Golfo. In the latter case, the west, Sabina and Pozo de la Salud aimed at stability.

As for the eruptive process of La Restinga, the Scientific Committee said that is ongoing, as evidenced by the finds in the tremor amplitude confirming that the volcano is still emitting material and depending on what it is colored differently.

Since the first bathymetry by the scientific team Ramón Margalef ship has seen a decrease in the height of the volcano, which means that sectoral frequent landslides occurring typical of underwater eruptions.

Although the emission level has registered an increase it must be observed, according to the Institute volcanological de Canarias (Involcan), this is understandable because magma is still moving.

Finally, the Scientific Committee said that the scenario of a possible eruption in the north is still open but said that the situation is not clear, nor is imminent at the time

[Hervé]

Amzer Zo !! Goodmorning !!

I must admit, when I saw the pics yesterday, I was absolutely sure that I had already archived them a week or so ago..
Streaming was coming through announcing that they were newly released...
confirmation finally came when I compared each one with Earthquakereport.com via their flicker page as uploaded and confirmed by Joke...

[...]


Correct!

They were taken on the 23rd of November.

I finally managed to reconstruct the picture sequence:


https://byfiles.storage.live.com/y1pLaxtjADiov0nlxfxbAyNArXZ73zh9QZCNzgf_xjcf7_g3OPuc_v4hLAjIfsFEJ1opm0uzxmo18I/Guardia-2011-11-23-04.jpg?psid=1



https://byfiles.storage.live.com/y1pN70gDS7ckSLcOCw-_gCk1PIzYNcptsXZ1ZHjmiP8C1Xc-g4V8EqTrOBxyMLg_AC4ovuyHTpD4jk/Guardia-2011-11-23-05.jpg?psid=1


https://byfiles.storage.live.com/y1psw2o9nUvdZuHEqpUnYz_3EF21s8FLCFMSR_kcW_SoXyz_P6rU3SJ5K-GPR2EG6QrOHyyX3BbnzY/Guardia-2011-11-23-06.jpg?psid=1


https://byfiles.storage.live.com/y1pU9B_unAP9HHsnaDoqeBjeKAhzY-c3kD63cFlftIA7jxHi3eyTKhSC-aDvvfMulfiOQillzaU9wc/Guardia-2011-11-23-07.jpg?psid=1


https://byfiles.storage.live.com/y1pm0SB17kJVJHou5O3e-foyVrH57N_VpQCB8KbC_jkxIwa3ltm_DIZcPHqSwiKOe-dA0gfRNyuPuc/Guardia-2011-11-23-08.jpg?psid=1


https://byfiles.storage.live.com/y1ps2OeXEIbhHyaynnXUYBV_JNCDfkZcP21NlJmmzv00yr6d3K_vRiJa2kaD_rJXzF2ZMwU8FYEMbM/Guardia-2011-11-23-09.jpg?psid=1


https://byfiles.storage.live.com/y1pnU-pboz9qoG3ItVq3dU4qGjG_C6t_iwOCzHJes01GIN5RgzJ_q1v3_fREyRsfa32L3n1WBgwxFM/Guardia-2011-11-23-10.jpg?psid=1


https://byfiles.storage.live.com/y1pPrUThdBdkskCsp54Drdef2jp74j_DzG4mqyImExdJLB7IoWjTozxjNqGUpCczalVwOGIwQ6_tmA/Guardia-2011-11-23-11.jpg?psid=1


https://byfiles.storage.live.com/y1pJKqxERDzkbm2MCePy4qvxbzwsSUkp1r1ITB8uHm8HndljgS1H92GSy4UAwAZAt3SEzcIrcymbis/Guardia-2011-11-23-12.jpg?psid=1

[Hervé]

Then:


https://byfiles.storage.live.com/y1pS1gXtoiIiDFFBSTz5T7_xFgremUAOHV2bMMpUa47q-KXze_6QLFE7_6HQ6-9LMnCrHjKDh-RSYU/Guardia-2011-11-23-16.jpg?psid=1


https://byfiles.storage.live.com/y1p2Ref_TOB17_FhTfSqfTsTPPa3T-J8SxG0mg5mx-I7txjNv0iexQGOdZO5HN2Y-9nd_YlMFHkqTs/Guardia-2011-11-23-17.jpg?psid=1


https://byfiles.storage.live.com/y1pUm6b69_wbrF2cXeDJOFafc6xbsEaTVrfkk8yqZpMFJFsZ_vfxF3EcfOkdAPEz7Jm6PXKO7OwN0o/Guardia-2011-11-23-18.jpg?psid=1


https://byfiles.storage.live.com/y1pQ9qbVdjlbZOEYhgxBQ4s5UfDIoacHKacnDlbxzwSCw1FYWyBqmYGCic0PYv0aZAmy_oKU19HwbQ/Guardia-2011-11-23-19.jpg?psid=1


https://byfiles.storage.live.com/y1pPZDhwIcLpbtJwBYF3W96VRXKMfo35Mse4ZJpqVhirZqIF1uVU3uKwhQ3doz_MbzUhDAS3US-StU/Guardia-2011-11-23-20.jpg?psid=1


... and an isolated one:


https://byfiles.storage.live.com/y1pFsxXTGCEXtmGQOYEZOBygq_krtuIwcvVYVDBQoZTVq9FyJBw5-BWk0GA9_UddR4LuQXnF5e6ZDM/Guardia-2011-11-23-03.jpg?psid=1

[Hervé]

Strongest so far (2.7 at 09:25):





http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-26_09-10.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-26.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-26_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

Interesting 3D rendering of the earthquake clouds by AVCan:


MeQ7_VFInv4


What's becoming obvious is the structual control of these EQs along the main rift discovered by Ramon Margalef precise bathymetry (see post # 1632 (http://projectavalon.net/forum4/showthread.php?30888-After-tirelessly-updating-Avalon-for-weeks...it-s-official-evacuation-is-in-progress&p=361863&viewfull=1#post361863))

[Hervé]

Polly caught smoking again (12:40 GMT)!




https://byfiles.storage.live.com/y1p5_C7txcuGl0VqqlMSGXWWjrV6VQMRVOoAxUNTmgJdoieWN8xTEu76424gBDjv8biuQkx0srWpeM/Image-2011-11-26-7h39mn22.jpg?psid=1


https://byfiles.storage.live.com/y1pDw7f1KFdU2Xtk5slswVTag8xo5ZTpvrO37TSNvvW_wgmIjr3e_YBeraM8zLn6tZ_lLg2lYaREn0/Image-2011-11-26-7h39mn41.jpg?psid=1


https://byfiles.storage.live.com/y1p7GL42c5Z7-ug3wBdtHtF4ass-4VwyKAHPOYFT3GZx6_C5rwtARiN2EvHorTbiMVtEOUhc6LoPtY/Image-2011-11-26-7h40mn43.jpg?psid=1


https://byfiles.storage.live.com/y1pOaipe8YJ3Q7QqNjErPLHagxlKE2ZEPvPy9PJdslY43Cb6KKM6Ye3BSgYlMfsxKzdwev2o_i1UvU/Image-2011-11-26-7h42mn5.jpg?psid=1


https://byfiles.storage.live.com/y1pfRyXW3P77EZFPmWEGZx_g9-dm5dw6KZ_dhROs9a8vd3FGmipf06YdMWU1NCFQ5-GGhPq5F4N9K4/Image-2011-11-26-7h42mn23.jpg?psid=1





Confirms the Earthquake-report.com witness:




Update 26/11 – 11:30




Joke reports that her friend, the La Restinga human webcam, has growing fear that a new evacuation is not far away as the stain is very visible from the village this morning (Ian reported the same in his 09:52 update). She thinks that if the wind eventually changes, La Restinga might be in the center of the storm again.

[randles]

Low seismic activity on Friday and early Saturday

DIARIO DE AVISIOS | Valvede

The National Geographic Institute (IGN) has registered on the island of El Hierro on Friday a total of 9 earthquakes of between 1.5 and 3.1 magnitude on the Richter scale. In total, since the day July 17, 2011 11 842 events have been found.

The largest of the earthquakes recorded at 02.35 hours, had a magnitude of 3.1 degrees and felt by the population with a maximum intensity of III in the town of Frontera. This event was located at sea 20 kilometers deep.

The rest of recorded earthquakes have been located in the Gulf, aligned in the NNW / SSE at sea and a depth between 15 and 24 kilometers deep. The last of these, 2.0 degrees, occurred at 21.19 hours about 18 km depth and epicenter in the sea.

No earthquakes early Saturday

The island of El Hierro has dawned without recording a single earthquake, after four months of intense activity.

However, until 10 hours have been recorded four most intense movement of 2.7 degrees on the Richter scale, with a hypocenter depth of 20 km, all in the Northwest Frontier.

The stain remains widespread

The stain caused by the eruption is ongoing underwater off the coast of La Restinga has remained widespread in surface appreciating certain sporadic changes in hue. The sending center has presented a brown color associated with the emission of fine material.

For its part, the results of processing the data obtained with the GPS stations do not reflect any clear trend in the horizontal components other than the regional. Vertically majority view stations and only a collapse of El Golfo seem to point to a stability, mainly in the east.

The amplitude of the tremor is stable

On the tremor signal, its amplitude is maintained at levels similar to those of the previous day. In the analysis of the data is not evidence of any second source of tremor.

[randles]

Protective measures removed for the population of El Hierro

The normality returns, for the moment, to El Hierro. The stability of the seismic-volcanic phenomenon has allowed the Emergency Plan Volcanic Islands (Pevolca) rule that it can suspend the measures taken so far. These affected a dozen people from the north, who had evacuated since early November, and the reopening of roads were closed, and the possibility of using the tunnels Roquille 24 hours a day.

The mayor of La Frontera, David Cabrera, has man been satisfied by the return to normalcy in the area.

The only measures which remains is the closure of the bays of Puerto Naos Tacorón and as long as the underwater eruption continues can not be ruled out that emissions of gases that accumulate there.

The reason for the decision is that the southern eruptive process runs its course without more novelty other than emissions variables to the sea. To the north are not expected earthquakes of a magnitude greater than 4.5, so that the risk of landslides has increased in an area where, on the other hand, there are continuous phenomena of this kind by the rains, according to neighbors.

All other indicators remain within expectations. CO2 levels rise, but that is normal because there are still emissions from magma, even underwater. The tremor is constant, and ground deformation increases somewhat in the north. However, there is no prospect of opening a new volcanic vent in the area.

The ship measures Ramon Margalef indicate that the cone in front of La Restinga loses height, confirming that there have been landslides.

[randles]

The volcano drives pyroclastics back to the surface

DIARIOELHIERRO.ES, writing (11.26.2011. 16:22 pm)

The submarine volcano has returned to La Restinga and is expelling pirclastos smoldering this morning to the sea surface, as confirmed by sources to Diario El Hierro However, this afternoon the situation has returned to normal in the area of eruption.

On the other hand, the National Geographic Institute has confirmed this morning to address the Civil Protection Plan for Volcanic Risk (Pevolca) during the day yesterday, Friday, 10 earthquakes were located, being only one of them felt by the population with an intensity of III.

Most of these events are located in El Golfo aligned in the NNW / SSE in the sea at a depth between 15-24 km. The more intense, with a magnitude of 3.1 on the Richter scale, occurred at 2:35 hours west of Frontera at a depth of 20 kilometers. In total, since the day July 17, 2011 11 842 events have been found.

[Hervé]

Logged EQs > 1.5 by IGN for the past three days:


https://byfiles.storage.live.com/y1ph3BdpvH4j0AQmiz6li-eSLdyXgsXtzY_www-rvjS5iEn5WiaLbrgv42THNFKGbZxEgCq4h4Dlj4/Image-2011-11-26-18h23mn44.jpg?psid=1

... is Polly stacking up energy for a big burp or just oozing it out quietly?

Hope it's the latter...

[Hervé]

Strongest so far (no data):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-27_01-02.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-27.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-27_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/44(43).jpg&Width=456&Height=248&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


El Hierro Registered Two Earthquakes During The Night

DIARIOELHIERRO.ES, writing (27.11.2011. 09:30 am)

The National Geographic Institute (IGN) has recorded until 5:48 am this Sunday, 27 a total of two earthquakes on the island of El Hierro.

The first, of 1.5 magnitude on the Richter scale, was located at 4:35 pm in the southwest Frontera and 15 kilometers deep.

The second quake of 2.3 magnitude on the Richter scale, was found to 5:48 pm in the northwest Frontera and 25 kilometers deep.

EARTHQUAKES ON SATURDAY 5

Meanwhile, the volcano monitoring network monitoring 24 hours of National Geographic Institute (IGN) resgitró yesterday, Saturday 26, a total of five earthquakes in the island of El Hierro, between 1.6 and 2.7 magnitude on the scale of Richter.

According to the National Geographic Institute (IGN) collected by Diario El Hierro and could be subject to change, the five earthquakes recorded on Saturday in El Hierro have been located in the northwestern and western Frontera and between 17 and 20 km depth.

[randles]

Update for Sunday 27 November from Earthquakereport.com

Data Update 27/11 – 09:14
The activity at the eruption area gets even stronger than before. The webcam operator just zoomed out a little to have a wider scoop. Earthquake-report.com expects more action today. A stronger Jacuzzi and from time to time a swelling geyser type action.

http://earthquake-report.com/wp-content/uploads/2011/09/eh-27112011-1.jpg

Sunday morning action in the Las Calmas sea

Data Update 27/11 – 08:50
The coast guard boat on the image will have the best pictures. What he does is however very risky as nobody can predict the start of a subaerial phase of the eruption.

http://earthquake-report.com/wp-content/uploads/2011/09/elhierroship3.jpg

Coast guard ship on the eruption site - screenshot courtesy Birgit Hartinger

Data Update 27/11 – 08:09
- the action which started yesterday by floating smoking stones is continuing this morning, hot pyroclastic material is floating to the surface. Just behind a weak Jacuzzi is formed. All this can be seen on the Telefonica eruption webcam.

[Hervé]

Looked pretty busy at La Restinga this morning...

... between Polly smoking, the search & Rescue vessel Salvamar Adhara (looks pretty red, to me, for a coast guard... I think Armand is a bit confused...) and the Guardia Civil rotating wings contraption... hope their duct-tape is H2S resistant...


https://byfiles.storage.live.com/y1p6DpQ-TeSvfgUIUyC7JH4lQPbMwVym21M6yQGcrCneETt2aFjxdWUCRS0OOJQOOKPLa_AE8AZU1s/Salvamar%20Adhara-02.jpg?psid=1


https://byfiles.storage.live.com/y1pBtlofSWzDu7D4DOq2hMKOxrtXozDHzWGOQX937xlvw2bm1ME9FTsH8sermsPNiOjAbY0_oPyFjc/Image-2011-11-27-9h11mn36.jpg?psid=1
I guess they got a good whiff of what Polly's smoking...



https://byfiles.storage.live.com/y1pqrhSGvTcaYw9-d3hgoRdb97No7qwRvedU1tKbjoKamqoGmp7BPerq40yvZ-AiG_KUKds0m5Ydjo/Image-2011-11-27-9h1mn38.jpg?psid=1


https://byfiles.storage.live.com/y1pTGo3ykIVi7n0_oorjHEwZdSn560SwoErZ_x7N10fdt0RLzjPvczh_762A70Hg5enPjpU9aMLlqs/Image-2011-11-27-9h1mn3.jpg?psid=1


https://byfiles.storage.live.com/y1ppDpAyLYDFrQXAlWYfLfk2nncYOgNOtiRoXdZ6iNrmi0C-C-pHPHl05rT0oa8lPMqcemUpwBSH4c/Image-2011-11-27-9h3mn50.jpg?psid=1


https://byfiles.storage.live.com/y1pwsNRhzGR6p4HMKyH_YwC4SqhR9e2oIRCgdGkmwznnGaE6IOsSwzkipO-GFcUc-MVAxarXEsY1Vc/Image-2011-11-27-9h5mn28.jpg?psid=1


https://byfiles.storage.live.com/y1poSP6-WfSFhJ5JTyZvfz4pTTOZRAr16zxpfwolNLQfeT7dBe_G27R1252uFTcadNxOhKUtEXdrrU/Image-2011-11-27-9h4mn30.jpg?psid=1


https://byfiles.storage.live.com/y1pqvfupV02hzNbs97G2EL1u35V0QUuvJYoaOaPbYm_qh9YJ78x31aPJUrlx8imRD-bbKLpz5afGxc/Image-2011-11-27-9h20mn35.jpg?psid=1


https://byfiles.storage.live.com/y1p9QuRUNo-PxfuF1QMcVxriILwGu06imd-XnSRTekagzVhewsxX0cHLC2rm2ZgZj_kB4q6a8Ka3fA/Image-2011-11-27-9h24mn19.jpg?psid=1


... forgot... screenshots par moi.

[Hervé]

From the other (poor excuses for) webcams:


https://byfiles.storage.live.com/y1p9QuRUNo-PxcAcfQGEeJWcpG9FNCmQqPKJmELPAVS5KdzdrdxqByxrPsNsaGGnqE01IcdqVt5ps4/Image-2011-11-27-9h26mn47.jpg?psid=1

https://byfiles.storage.live.com/y1p9QuRUNo-PxfjM2iQMJ7AgRfP1ohJpd1mCkaUc7INUlIhefw-hBWprd5S_qePZDfwQMP_Mrphihg/Image-2011-11-27-9h29mn52.jpg?psid=1

https://byfiles.storage.live.com/y1pUgYwN4EnJXV-6DysXOVzd3P4hQeN36K8QUbiNwsmYVb3US1kKSJo47tMeePXPTFrGncG0yYbBq4/Image-2011-11-27-9h31mn34.jpg?psid=1

https://byfiles.storage.live.com/y1pebDv_jEwOsSyMJ1WtctrciFfCGvN71XcB0YWWRVLNwwnMfkllkxBxkGDh-TK5H41yCyK4HiyasQ/Image-2011-11-27-9h33mn48.jpg?psid=1

https://byfiles.storage.live.com/y1pyQ2pq4x4xHT0c_e69X6i5PXX02V4n4yT6mTgP045fZn49Pcm7z_8ooxFESjU5lYIRa8DsfyoEuk/Image-2011-11-27-9h36mn21.jpg?psid=1

https://byfiles.storage.live.com/y1pk9aFg5oTTLNBIa7wb6FHvEK3ZUNCxwktMvAS5o_raQibe-YoDvJAMXTsxPB--ZbavU5OCaoBNZs/Image-2011-11-27-9h37mn16.jpg?psid=1

https://byfiles.storage.live.com/y1peXY-9aDWg-BJPsCXTMACqjjcmJrE0Zev1hQO37wYxumsGqnt5B6rkLdJCUn3KsFcQv64t9R6AEE/Image-2011-11-27-9h38mn0.jpg?psid=1

https://byfiles.storage.live.com/y1puYODlNinmu0XcaNTsz4BhKHtNgHY4uU9DF83ak0gfG2GvGZPFsBq8xYVBnqL1zg_FLvjaKYOdXc/Image-2011-11-27-9h38mn20.jpg?psid=1

https://by2.storage.live.com/items/9E509A2880D8D99F!709:Scaled1024/Image-2011-11-27-9h40mn55.jpg?psid=1&ck=0&ex=720

[Hervé]

So... what was so interesting, over there, that was worth spending so much fuel and man-hours...

... these smoking stuff:


http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc7/378970_10150433447513447_163883668446_8521241_791367968_n.jpg


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/376542_10150433448128447_163883668446_8521245_124566415_n.jpg


http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/389159_10150433447703447_163883668446_8521242_517532936_n.jpg


http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/377769_10150433447883447_163883668446_8521243_2066197026_n.jpg


So, now, may be, we'll get a better idea on how the magma is evolving and put to rest the speculations on whether it's rhyolitic or not... that is , explosive or just your normal run of the mill effusion à la Hawaiian...


Some indications corroborating my suspicions:



Fecha: 27 de noviembre de 2011
Lugar: La Restinga (El Hierro)

Comments and faves

[...]

http://farm1.staticflickr.com/16/buddyicons/48600102544@N01.jpg?1119756229#48600102544@N01 (http://www.flickr.com/photos/rvr/)

rvr (http://www.flickr.com/photos/rvr/) (3 hours ago (http://www.flickr.com/photos/presican/6410552157/comment72157628172906663/) | reply (http://www.flickr.com/photos/presican/6410552157/in/photostream/#))

¿La fecha de la cámara no es correcta? "This photo was taken on October 15, 2011".

Why suspicions?

Simply from the colors... looks either sunrise or sunset... I watch Salvamar Adhara go out and come back around noon... that should give bright white lights... not golden hues.

***************************


All right this picture settles it: sunrise... this morning:

https://lh3.googleusercontent.com/-L8llPegbD64/TtJTGJP4ZGI/AAAAAAAAA7Y/Np82sIRoo5s/s1024/P1030411.JPG

Image courtesy and copyright Ian Carson

[Hervé]

From space today:


https://byfiles.storage.live.com/y1p98HOdwtue-KslHw2foGR-E9Cm5AQvHJ5TCecEH0p2j1XA_xfW-6ngw9iBySuNkYaIl5MvCmaGAo/Image-2011-11-27-12h2mn2.jpg?psid=1


Not so much of a plume anymore... apparently.

[randles]

Great Pic's Amzer Zo :) Thank You !!

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/11111(30).jpg&Width=635&Height=247,65&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0

Picture taken this morning by IGN-CSIC scientists from a Maritime Rescue boat.


The Sea of Calm Boils

DIARIOELHIERRO.ES, redacción


The underwater volcano of La Restinga continues this Sunday expelling pirclastos smoking to the sea surface, as happened yesterday, Saturday.


MANCHA

For its part, the stain caused by the eruption goes on underwater off the coast of La Restinga has remained widespread in surface appreciating certain sporadic changes in hue. The sending center has presented a brown color associated with the emission of fine material.

[Hervé]

Strongest so far (2.9 at 13:32):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-28_13-14.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-28.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-28_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

Tons of bricks... floating!


nFrHnAmwt8s




AHyBiEHjQAY



Videos by Jesus Perez Quintero on board of Salvamar Adhara on November the 27th, 2011.

[Hervé]

That INVOLCAN / Guardia Civil photographer... my hat off! :yo:


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-snc7/377602_296002597099806_134042953295772_974294_229625242_n.jpg

http://a3.sphotos.ak.fbcdn.net/hphotos-ak-snc7/381307_296001177099948_134042953295772_974267_1022086158_n.jpg

http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc7/308176_295996080433791_134042953295772_974254_2117228846_n.jpg

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/384050_295997210433678_134042953295772_974260_1136949011_n.jpg

Captured the bubbling, steam jets, smoking, popping up, Jacuzzi, etc...

[randles]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:%5Cwadhoo01%5C/imagen/26496/44%2844%29.JPG&Width=635&Height=232,171875&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


The IEO concludes that''there is no evidence of a new eruptive focus in the north of the island''

The latest report by the research vessel Ramon Margalef Spanish Institute of Oceanography (IEO) has concluded that "to date there is no significant evidence of outgassing from volcanic eruption or a new focus in the northern rift the island of El Hierro. "

The report, dated November 19, 2011, contains the latest study physico-chemical-biological deep by Ramon Margalef ship in the north of the island of El Hierro. The main objective has been the detection of the existence of a possible focus or deep fissure eruption in the north.

For this purpose, concentrations were determined in different gases dissolved in the seawater from the first 5 meters above the seafloor to the surface of the ocean.

Some preliminary results that can be drawn from this study are the absence of hydrogen sulfide concentrations in the upper 100 meters above the ocean floor. Also, the pH, temperature, salinity and dissolved CO2 concentration are completely normal for these waters and these depths.

[randles]

The volcano of El Hierro throws Pyroclasts up to one metre

Volcanic activity on the island El Hierro is ongoing. On Monday, a helicopter and rescue boat were able to spot check the status of the situation on the Sea of ​​Calm.

The volcanic fissure continues ejecting material reaching the surface in the form of pyroclastic more than a meter in diameter. There are a greater number of material floating on the water between the plumes, which emerge on the spot of eruption.

On the other hand, and on Sunday, residents of El Hierro could see through the webcam installed the issuance of these large pyroclastic steaming streams of steam. The documentation gathered confirms that activity in the volcano area remains quite active. Moreover, the tremor has been declining in the area of La Restinga, a decline of between 5% and 10%




Looky how low this Helicopter flies over Polly !!


http://www.youtube.com/watch?v=ATIu5sitMhs

Huge !!

http://www.asturiasmundial.com/noticias/fotos/12995_1.jpg

http://www.canarias7.es/fotos/o/1111/240236-1p.jpg

http://www.canarias7.es/fotos/o/1111/240236-2p.jpg

http://www.canarias7.es/fotos/o/1111/240236-3p.jpg

[randles]

http://www.noagendachat.net/gn/

Coming up NOW ! !!

Live,...Radio Podcast, in English, direct from El Hierro !!

[randles]

Mixing Magmas at the Ongoing El Hierro Eruption

http://www.wired.com/images_blogs/wiredscience/2011/11/AfSq6cgCQAAnBgx.jpg-large.jpeg
Steaming basanite/rhyolite clasts from the eruption at El Hierro in late November 2011. Image courtesy of INVOLCAN and @teideano.

The break is done! First update looks at the continuing activity at El Hierro in Canary Islands continues. The “jacuzzis” persist to the south of the island (see above) with some indication that they might be closer to shore than before – however, they still don’t appear to be in shallow enough water or vigorous enough activity to be Surtseyan in nature. Plenty of the the steaming, black floating pumices are still being spotted on the water’s surface (see below). You can see some video of the “jacuzzis” with a helicopter hovering over them (video) and it clearly shows the ocean steaming. All the activity so far has been focussed to the south of El Hierro and the Instituto Español de Oceanografía (IEO) now says that there are “no signs” of an impending eruption to the north of the island.

IGN posted some information (spanish) on the petrology of the clasts being erupted from the submarine vents and it looks like the floating clasts don’t float for long: “The high vesicularity of both liquids is what gave a relatively low density, allowing them to reach the surface of the water and survive in it for few hours until the gas vacuoles were filled with water, finally sinking to the seabed.” (Google translation). This is typical for pumice clasts in most situations – once water saturates the rock, it loses the ability to float. IGN has now collected some impressively-sized pieces, too, measuring up to 2 meters.

http://www.wired.com/images_blogs/wiredscience/2011/11/387099_294276317272434_134042953295772_968581_1824794481_n.jpg
The "jacuzzis" from the submarine vents south of El Hierro as seen on November 24, 2011. Image courtesy of INVOLCAN.

Compositionally, the clasts are a mix, as we’ve known for a while, but it seems that even the end members of the mix might be a mix. The dark material is low silica basanite (43-45 wt% silica) that is normal for El Hierro. The lighter material is more peculiar – not only is it different from the basanite, but it might be a mixture in itself. It contains both trachyte (similar to dacite but more sodium, potassium and calcium – 64-65 wt% silica) and rhyolite (74 wt% silica). That compositional different might suggest that the two true end members are the basanite and the rhyolite while the trachyte might be a mix of the two. Considering the clasts preserve the light and dark of the basanite and rhyolite, then the mixing that occurs during (or right before) the eruption is incomplete. Some samples preserve more of the mixing, thus contain the trachyte. The magmas are stored in very different conditions as well – basanite at 1200°C, likely in the newly intruding dike, and the rhyolite/trachyte at 850-900°C, likely as a crystal mush that the dike intersects. There isn’t much of the lighter magmas either – IGN estimates there is roughly 10:1 volumetrically basanite to rhyolite/trachyte – similar to what is found in Iceland, where small volumes of rhyolites are found at many Icelandic volcanoes. The lighter rhyolite/trachyte might not be that old either – research at La Palma in the Canary Islands suggests that the time to differentiate a phonolite (similar to rhyolite) from a basanite is less than 1750 years.

[randles]

https://lh3.googleusercontent.com/-dU-O2n8MaMY/TtN3Q2_QZGI/AAAAAAAABHo/_SDMIUDLbZ0/s400/exposure%252520stones%252520in%252520the%252520town-hall%252520of%252520pinar-the%252520stone%252520in%252520the%252520middle%252520was%252520given%252520to%252520the%252520cabil do%252520this%252520morning.jpg

3 stones picked up out the Las Calmas sea yesterday, were transported to the mayors house in El Pinar (La Restinga belongs the El Pinar). The lava exposition was visited by students of the local schools. The lava stone in the middle has in the meantime been relocated to the Cabildo of El Hierro (the island authority).

[randles]

Sergio Guitterrez, the Editor of Diario El Hierro, never fails to move any of us with his words from the heart.
Here he says goodbye to his friend, who has just passed away..

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/sergiopeque%F1a2(25).jpg&Width=122&Height=160&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0


Farewell, Nino

Punta del Hidalgo has something special. An aura of mystery and beauty that to me, particularly grabbed me from the beginning. In La Punta lives my daughter, Selma, and here was a child. I do not know why but, generally, the "pointers" to come to El Hierro are going to La Restinga. It must be that reminds them of their native Point. Or maybe Punta del Hidalgo and La Restinga are equal, fishing villages, of people brave, tireless fighters and, of course, with its eternal sea, always present in the culture and idiosyncrasies of our land canary.

So long ago Herrera Barreto (Nino) left Punta del Hidalgo and landed at La Restinga and quickly turned into a El Herrano. Now he has returned to the sea sailing into the unknown. And it has gone as it came, with his everlasting smile and kindness.

- "I'm coming, Sergio, quiet and I saw you," he said in a volcanic Frenzy Bar brimming Luis "El Taperia" where he worked until now and we ate in more than one occasion some of the journalists that we were in the Pinar.

- "Take a shot, on the house, but do not say anything to my wife so shedoes not find out," he said with a voice almost imperceptible (to Domi, his wife does not listen) as I gave the shot of "jagermaster" after the sumptuous lunch.

Do not know why, Nino, but the news of your death has given me grief. I do not know. Or if I know.What the hell! You see, life is ****ed. Working tirelessly to the end, leave this world in this way, so suddenly and so young ...

You will forever remain indelible in the minds of those who were lucky enough to meet you. You've gone as we arrived, giving us all a lesson in poise, education, humility, kindness ... of good people, in short.

Farewell, Nino. Rest in peace. http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/5(127).jpg&Width=125&Height=189,490445859873&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0

[randles]

The residents of La Restinga "first touch of the volcano" of El Hierro

The residents of La Restinga have been able to touch for the first time a piece of lava that emerges from the submarine volcano of El Hierro and even homes have been part of this material. This was reported on Radio Lanzarote Lanzarote reporter Hugo Alberto Rojas, who has moved to the island to tell this story "historic" is going on since early October in the Canaries.

Rojas said that "it was very exciting" moment in which the scientists showed the pieces of lava Sunday the village of La Restinga. "Neighbors need to touch and see some of that volcano. The children and adults really enjoyed picking up the pieces, still smoking when they came into port, "stated the reporter.


http://www.youtube.com/watch?v=iYjGO4Evwh8

It has also reported that the scientists exposed these pieces of lava in the Socio-Cultural Center in this town, "which was attended by many locals to see and touch part of the volcano."

Hugo Alberto Rojas traveled three years ago to El Hierro and this time found an island very different from that observed today. "Before there were many boats in the harbor, lots of activity. Now I do not see anyone in the sea, only the green spot, "he said.


http://www.youtube.com/watch?v=LXtHSrm4sVo

The attitude of the children

Lanzarote reporter has been impressed by the attitude of children to process seismic-volcanic suffering El Hierro. "In La Restinga is a school child, with children very little ones. The director told me that suffered an earthquake in the middle class and small quickly took refuge under the tables. Furthermore, it is striking that from the window of the classroom and see the green blob bubbling, "he said.

The tranquility of the young is not reflected in the elderly, who are the ones who are "more anxious". "They felt the tremor at dawn, can not sleep and are worried. Some have even gone a couple of days to Tenerife just to get some sleep, "said Hugo Alberto Rojas.

In addition, the reporter pointed out that the citizens of La Restinga "are aware that this process will not end any time now" and the only peace they feel is thanks to the scientists, "who are right next door and that despite they have answered thousands of questions continue to meet the neighbors and explaining what is happening "under their feet.

[randles]

http://www.lancelotdigital.com/wp-content/uploads/2011/11/EXPOSICI+%C3%B4N-CASA-DE-LOS-VOLCANES.jpg


The National Geographic Institute donates a submarine volcano El Hierro rock to be exposed on the island


Staff of the House of the Cabildo de Lanzarote Volcano moved to El Hierro to study the development of the volcanic crisis that has been occurring since last October 10 on the island. Over a week, Orlando Hernandez, manager of Geodynamics Laboratory of Lanzarote, participated in a campaign gravimetric and review of various sensors on El Hierro. He did it with a team of Geodesy Group of the Institute of Geosciences.

Another activity was carried out for fieldwork in search of materials with staff from the Geological Survey of Spain and the Institute of Earth Sciences 'Jaume Almera'. Hernandez also maintained contacts with staff from the National Geographic Institute (IGN) in his visit to the Permanent Care Center (CAP). In this context, staff gave IGN Lanzarote representative rock samples from submarine volcano, which has been called 'restingolita', to become part of the permanent exhibition of the House of the Volcanoes.

The Minister of the Volcano House, Carmen Rosa Perez, noted that the Laboratory of Geodynamics "collaborates with numerous national and foreign exchange and data analysis, and so we think that our staff of the House of Volcanoes flock to the island of El Hierro ".

The House of the Volcanoes is located in the Parque Natural del Malpais de la Corona, on a volcanic pipe in the section known as del Agua Jameos. The facilities currently occupy 2,500 meters on two floors, which develops tourism, education and research. It is used as a venue for scientific meetings and courses are offered in conjunction with members volcanology Department of Volcanology Museum of Natural Sciences, Institute of Astronomy and Geodesy and teachers from the Universities of Tenerife and Gran Canaria.

[randles]

The Pevolca allow the return home of all evacuees

The direction of the Civil Protection Plan for Volcanic Risk (PEVOLCA) today authorized the return home of all the neighbors who remained evacuated in the area of Las Puntas and the Pozo de Las Calcosas and the opening of the Eco-museum and El Lagartario and the reopening of the roads were closed at night, said today in a statement PEVOLCA.

The statement added that the roads that were closed were the HI-5, where the tunnels Roquille, HI-500 and HI-50.

However, the statement says, we must stress that it is maintained a red light, Level 1, for La Restinga, in the municipality of El Pinar, and yellow for the rest of the island.

The only Civil Protection extraordinary measures that are currently maintained are the ban on access to the beaches of Puerto Naos and Tacorón and maritime exclusion zone.

The tunnel Regarding Roquille, the letter stated that the Department of Infrastructure of Roads will create a work area where there were defects in the shotcrete, so , together with the City Council of El Hierro, which will to clarify when and how to open the lanes, meaning Valverde Frontera, which was closed by the studies that were performed.
These decisions are made due to the reduced chance to occur high seismicity of magnitude exceeding 4.5 on the Richter scale, the maximum level established for the IGME that could produce landslides on the slopes of the tunnel.

In addition, the earthquakes that are occurring are occurring at a depth of more than ten miles.

On the other hand, has proceeded to place three accelerometers in the escarpment of the slope adjacent at Frontera tunnel, which allows greater control of potential landslides.

As preventive measures, the following will remain in El Hierro equipping the Red Cross and the EMU, as well as network communications, transport and port stations Advanced Command (PMA).

Regarding the Volcanic and Earthquake crisis PEVOLCA Scientific Committee reported that we are in a more relaxed state because in the past fortnight there has been no significant seismic activity, the magnitudes of the movements have been below 3.7, the horizontal deformation do not have a vertical pattern and remarkably show a downward movement with the exception of El Golfo.

In the latter case, the west, Sabina and Pozo de Salud are aimed at stability.

As for the eruptive process of La Restinga, the Scientific Committee said that is ongoing, as evidenced by the finds in the tremor amplitude confirming that the volcano is still emitting material and depending on what it is colored differently.

Since the first bathymetry by the scientific team Ramón Margalef ship has seen a decrease in the height of the volcano, which means that sectoral frequent landslides are producing typical underwater eruptions.

Although the emission level has registered an increase it must still be observed, according to the Institute volcanological de Canarias (Involcan), this is understandable because magma is still moving.

Finally, the Scientific Committee said that the scenario of a possible eruption in the north is still open but said that the situation is not clear, nor is it imminent at the time.

[randles]

The Maritime Rescue boat Salvamar Adhara collecting smoking stones being ejected from the submarine volcano of El Hierro in front of La Restinga.........


http://www.youtube.com/watch?v=OJOfvvF3ZXo

[Hervé]

Strongest so far (3.0 at 01:59 upgraded to 3.2):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-29_01-02.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-29.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-29_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

New promised survey vessel, Sarmiento De Gamboa, arrived on the scene:


https://byfiles.storage.live.com/y1p_xyLqB7IyFsSzetLlK6g_c6d2dJLfzi9KQzQBheuGh7gnePtrx4y3tmgvi25-BUmH9lvw7Af-Ag/Image-2011-11-29-5h19mn32.jpg?psid=1



https://by2.storage.live.com/items/9E509A2880D8D99F!714:Scaled1024/Image-2011-11-29-5h36mn59.jpg?psid=1&ck=0&ex=720

[Hervé]

Oh, Telefonica, Telefonica... Telefonica... and Movistar...

Why spend so much time promoting that "Buffering" thingy?

Must be some kind of luxury item of some sort...

... as far as I am concern... I wouldn't put my name to such promotion... but that's me.


https://byfiles.storage.live.com/y1p_IiM2euckhHGUfzczZ5RwZqx5blWPysLjczzRoX-p1RQWZyYa8jyNNRzfcwYeaDsk6GO0I03EOM/Image-2011-11-29-6h16mn0.jpg?psid=1


https://byfiles.storage.live.com/y1pn-TT_uK2UzxPGX8Kky7PGB6idb91iKsoShJIaJgLCkxkS9CjNDR6LyvkwbxZvtHGdSioMW7BSR4/Image-2011-11-29-6h16mn25.jpg?psid=1


How come UStream manages to do a better job?




:rant: Rant of the day... :rant:


:rant:

[Hervé]

What the ....


https://by2.storage.live.com/items/9E509A2880D8D99F!717:Scaled1024/D-CHIE_2011-11-29-1.jpg?psid=1&ck=0&ex=720



Saturating full blast again...

**************************

Short blast this time.

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/3333(56).JPG&Width=500&Height=246&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Photo archive of the research vessel 'Sarmiento de Gamboa'

CRISIS SPECIAL SEISMIC - 29/11/2011 (12:15 pm)
CARRYING OUT A GEOPHYSICAL SURVEY FOR TWO DAYS
The 'Sarmiento de Gamboa' will make a geophysical survey of the seabed

DIARIOELHIERRO.ES, writing (11.29.2011. 12:15 pm)
The research vessel "Sarmiento de Gamboa" starts today, Tuesday 29, a research campaign in El Hierro, under the Civil Protection Plan for Volcanic Risk (Pevolca), consisting of the geophysical survey of the seabed, both north of the Gulf and the area near the underwater eruption south of La Restinga.

This vessel, involving the Geological and Mining Institute, as a Marine Technology Unit of the CSIC, the Spanish Institute of Oceanography and the Navy Hydrographic Institute, will undertake gravity surveys, seismic (refraction and reflection) and bathymetric profiles.

The 'Sarmiento de Gamboa' will be in El Hierro for two days, before starting a research campaign on the continental shelf of the islands.

Evolution of eruptive phenomena

For its part, the National Geographic Institute (IGN) has confirmed to Pevolca that, during yesterday, 23 earthquakes were recorded, none of them felt by the population, which stood mostly at depths between 15-24 kilometers at sea, in the area of ​​El Golfo. The maximum magnitude of 2.9 has been registered on the Richter scale.

The amplitude of the tremor signal showed several periods of sharp decrease of the amplitude for a few minutes between 1:00 and 4:00 am and between 20:30 and 22:00. The rest of the day has remained stable, stopping the slight upward trend observed during the previous day. It is confirmed that the analysis of the data yields no evidence of a second source of tremor.

As for the deformation of the horizontal components, it remains on the stable trend of the previous days. With respect to the vertical components, the GPS stations continue to show a trend of deflation, including stations located east of the Gulf; the stations west of the Gulf seem to point to a stability in this component.

After the appearance of fragments of lava during the day on Sunday, none was observed yesterday but a large brown colored spot. In an inspection by Salvamar Maritimo, the emissions over the area were found abundant and measured at pH 5.71 in water. From the Sasemar night flight, a surface temperature of 20.3 º C and not much activity was detected compared to previous days in the area.

[randles]

CO2 emissions in El Hierro are seven times higher than normal


EFE | VALVERDE

The diffuse emission of carbon dioxide (CO2) from the Submarine Volcanoin the Sea of Calms continues to increase and reached a value seven times the normal average of issuance, according to data compiled by the Institute of the Canary Islands volcanological.

According to these data, the diffuse emission of CO2 by the volcano island has now reached the 2398 ± 115 tons a day when normal values ​​are 345 tons per day.

Scientists at the Institute of Technology and Renewable Energies (ITER), an agency of the Cabildo of Tenerife and is part of Involcan, have been made since the crisis began on seismic and volcanic island on numerous scientific surveys of volcanic gases diffuse emissions that have materialized over the entire surface of the island.

To date, according to a note of Involcan, the results reflect the record of an upward trend of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcano island of El Hierro.

Scientists explained in the note that this increase in the diffuse emission of carbon dioxide reflects the pressure of this component in magmatic-hydrothermal system existing in the island of El increases due to the movement of magma from deep positions to shallower favoring exsolution of carbon dioxide dissolved in the magma.

Diffuse emissions of CO2 into the atmosphere contribute to the analysis of the evolution of the volcanic eruption being recorded on the island as the gases are the driving force of volcanic eruptions.

Carbon dioxide is the second major component of volcanic gases after water vapor and its low solubility in molten silicitados (magma) favors this gas to escape with their ease of volcanic systems in depth.

These scientific surveys conducted by Involcan have been possible thanks to MAKAVOL project "Capacity Building of R + D + i + d to contribute to the reduction of volcanic risk in the Macaronesia", funded by the European Union, with the collaboration of the cabildo of Tenerife and El Hierro.

[randles]

This is the full length video of Salvamar out to sea collecting stone....
On the youtube channel that I use to upload Avalons videos, a lady from El Hierro commented on this video as saying
" they are very airy, full of holes..somewhat like -crumpets-..very light
somesortanaughty 11 hours ago

WOW, cool! Or should I say hot! It's neat how the volcanic rocks float.
18 hours ago"


http://www.youtube.com/watch?v=41hvFpZQpv4

[randles]

http://www.youtube.com/watch?v=p1UWdAPPKxE

The research vessel "Sarmiento de Gamboa" close to the eruption vent El Hierro

[Hervé]

Some of the main special equipments Sarmiento de Gamboa was built for:

Main page: http://www.utm.csic.es/sarmiento.asp?switchlang=2

Animations:


http://www.utm.csic.es/doc/bo_sarmiento_de_gamboa/animaciones/Man_rov_1.swf


http://www.utm.csic.es/doc/bo_sarmiento_de_gamboa/animaciones/multihaz.swf


Sarmiento de Gamboa just came back sailing over Polly...

[Hervé]

Strongest so far (2.6 at 09:00:13):




http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-11-30_09-10.jpg
For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-11-30.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-11-30_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

https://public.bay.livefilestore.com/y1pDO6tLeRsshNkQsZlOHxsiwsJ2Dac5sBV3DlF2EXwrRDeTQwFwf3pqr3vlpoQxQuW7fltm2zO7d7Jt8APet599A/Ramon%20Margalef-04.jpg?psid=1

Ramon Margalef is back from Los Christianos straight into the GPS dead zone... to perform additional geophysical surveys.



https://public.bay.livefilestore.com/y1pElelGTRwMUSRsXT4JLELn8qg1WUWZb7l6B-UV56mjtEgX6kDMjwjp_KKDVpjgc_J_H7KkWhPLdREsPMA1wxwZg/Image-2011-11-30-2h40mn32.jpg?psid=1


https://public.bay.livefilestore.com/y1pIrjKngRBU2dMSAb4a8kvNOED4iAkd3kOKqENyF6IMmDiAa5rX_vQiQFVQ9RaHQ4VRMiciTVZkRn76BiUKRrVCA/vlcsnap-2011-11-30-04h09m50s33.jpg?psid=1


https://public.bay.livefilestore.com/y1pIrjKngRBU2cvHGN4ZdgRgJ7SGgb0KJx78I-1Zb6ZZSWF8lZGBXokonaaisKzi4b_MPCrOlLWvN8vBUsuGhljzA/vlcsnap-2011-11-30-04h10m08s221.jpg?psid=1

[Hervé]

As for Sarmiento de Gamboa, continuing sismic and gravimetric profiles in the El Golfo area:


https://public.bay.livefilestore.com/y1pjmsViuqepAZp2Gmug3_cIg7Ig05wO7QZtZLm8n1XqB5sYW_6GEku53MwDQRvDjJCk9ZrbDOw4MpV-RsOoX6MYg/Image-2011-11-29-5h36mn59.jpg?psid=1


https://public.bay.livefilestore.com/y1pvwnmUj4DN94VdIoPWsrsH0fdo9XWoGk6f2-vNVCqWtHaj5Nr-QsyE8kTrw9fpO_qJd3dnNB63fMp0JePEjpBbA/Image-2011-11-30-2h37mn58.jpg?psid=1


https://public.bay.livefilestore.com/y1ppF2kaJLusy6CdrbSHQgKn_tr0MuSSja59mdAtXITTkn5pv-C8RKWdIw3oB9yoa1jytbxw56PyxqLmrwrvSj5zA/Image-2011-11-30-3h3mn10.jpg?psid=1
In this diagram, the "Reflected wave" associated with the white-line paths should instead say: "Refracted wave."



This will give the profile of the crust under and in and around El Hierro so that we know more precisely what we are dealing with below the seafloor and how the different layers are arranged.

[Hervé]

Polly's has had a good snooze: not one EQ logged by IGN between 5 pm yesterday and 9 am this morning...

The only activity registered on the seismograms are the sismic campaign airgun shots:


https://public.bay.livefilestore.com/y1pJhtuaBOOeKLHfoV2qTXyqOwt68TnwHkFjU_6H0QTP7L5ztpbUdx_USjTldmZnbjqv6K5RDxw40nE1r_m1XJggA/H-CHIE_2011-11-30_03-04_sp.jpg?psid=1

[Hervé]

While yesterday the Sarmiento de Gamboa was surveying the Sea of Calm:


https://public.bay.livefilestore.com/y1psaPJGfUNIjoAORu6mYbN8c62UyhrODDGP-TRj5TewKg4tfByiKa5CQIGx3ASeaXfSqDcabEyjDPAD5lzwLDxpA/Image_00036.jpg?psid=1


Trawling its net of hydrophones to catch those elusive airgun shots compression waves...
https://public.bay.livefilestore.com/y1p-qlbi1-bcryAKMVEpDg4HBXcg-L1bev3Ccp4TpZk8Ln44v97-j-6P-TSn4rFUVEQYFUPnR1B5YR7ci0u9SUXTw/Image_00039.jpg?psid=1



This guy was busy flying around...
https://public.bay.livefilestore.com/y1pHpinltakcCtD0YYkakfwicvrNfQ_o5gM72hLz0c500tBBslE-VSh26-YKC5ThK8QNB03txosbbTa6OeIdfNlaA/Image_00041.jpg?psid=1


To catch these:
http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/377064_297469176953148_134042953295772_978134_370449691_n.jpg

http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/384261_297469140286485_134042953295772_978133_716647616_n.jpg

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/393427_297469103619822_134042953295772_978132_467770650_n.jpg

http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/387580_297469033619829_134042953295772_978131_579105178_n.jpg

http://a8.sphotos.ak.fbcdn.net/hphotos-ak-snc7/376012_297468813619851_134042953295772_978127_2130540372_n.jpg

http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/390679_297468990286500_134042953295772_978130_1102485813_n.jpg


... and I thought Polly was having a snooze... ' been busy too!

[Hervé]

Today... still only one EQ logged by IGN... and some tourists on the Sea of Calm...


https://public.bay.livefilestore.com/y1pKlXh6jYCJ6gS6BGnMYuNDl9Ar7AGM7UB9rTYkFxC124ipoVLms98lFe4RdxomJVrMoc25kr_dooiPao3hIA-7A/Image_00006.jpg?psid=1



While Ramon Margalef was busy criss-crossing in front of La Restinga:
https://public.bay.livefilestore.com/y1pKM5gACHx02iEcKwxL2H_JJdghtM9ucDDqKA-sPG_rHBiS6cEI4fmbApUfFdwsfbEqPZONdx9uCzqGU_R7SxlLQ/Image_00011.jpg?psid=1


https://public.bay.livefilestore.com/y1po7yPrHzM5vKlAVtNy3Z_IXb41QmApoKgqAtLLjyJalQvSSZJTzbo5OdTVm1v-v7ZQWtymZd5dXakS562EULdxQ/Image_00015.jpg?psid=1


https://public.bay.livefilestore.com/y1p5Q0efSLu7omzGNH5bFIH7HK2Umh6RUxdVOsNXNThoJ6lLZsaGY2yGHDP3bO3oXHAdpjLtiwmi60I3ca1iENBbw/Image_00027.jpg?psid=1


https://public.bay.livefilestore.com/y1pxX5Ml0E7gpBVs8i3hkGYyevxrwRXySqN6BQ1EpXmRqWMoy5iHUbWF0Mcr4WdlgxPYjNr4m8vFu5TOtU45PxWng/Image_00026.jpg?psid=1


https://public.bay.livefilestore.com/y1pZa0czK6c90_KgzKYRnOa_iS0I19UKbYIBTM8wOXD_kh4mDevuEdiVMWKBf0QqC9naawMcMOC4920STaTSmCfDQ/Image_00028.jpg?psid=1


https://public.bay.livefilestore.com/y1puLHmfA84fh89AGeQ0opICIiBk8kvOk-3jlGBV9lTh4omNaIlXjkPodFVEZCyy7obDYXhNx_3cbz6RCTwF1FbCQ/Image_00019.jpg?psid=1


... it's been standing still on that spot for over an hour! As if moored.
https://public.bay.livefilestore.com/y1pg3bTKPvFASQZEzVBNGa_moVufixRkLqNs9k7OC-KeDzvrZxXWnmWZ4paTln6M_VfPVKFkzRW_RZWKeN1saj_iQ/Image_00051.jpg?psid=1


******************
The second EQ of the day came while posting the above... a 2.1

[Hervé]

40 minutes later... still on the same spot...


https://public.bay.livefilestore.com/y1pEPXjCfOoyAY3GDtdcV4Sed3scmWGCiyL0wAdW3Lsbdj_q3l7XceIr4yifKK6_oJbsE45iFqkC5fPFfJ0EHTtSQ/Image-2011-11-30-14h4mn31.jpg?psid=1



Waiting for this guy to come back from running errands...
https://public.bay.livefilestore.com/y1pDskspzDnTPzzw8WRS_q2U9Fs6rIQle6k4gZ0DB-aIriLrcZipBSNpXg86mZkImjWp7Raf3ThUjKBwfuexcmfXQ/Image-2011-11-30-14h2mn29.jpg?psid=1


https://public.bay.livefilestore.com/y1pEPXjCfOoyAaNbLyEQwhZhFMbp6x7yenMNqEnL1Jrm0J4v5QfsYLnVUTJY2com3sRjzrdPeiPnlcsjVtaJ0xo7Q/Image-2011-11-30-14h0mn5.jpg?psid=1



... and it's almost night time...
https://public.bay.livefilestore.com/y1pgZ2YvO7QkId9xH1ygLsvbcIcnHG-reGBj7Q5MvUGifockhDsmD3_yf9K3W4kbI1R7EssQfI737mTJcwcjbH6FA/Image-2011-11-30-13h40mn22.jpg?psid=1



... back to work...
https://public.bay.livefilestore.com/y1pEQBLm8HZHIU1xXcmLPs3tIodBqFKz3JqmQv_g8AGUSTbP5pw2zSPH-XQNfLBvGzrIGSI9T1Hh1985h7qnPFPJw/Image-2011-11-30-13h53mn37.jpg?psid=1


https://public.bay.livefilestore.com/y1pqYyuVb6SyFRIt6YMcawiKzSJrdW57-uiczYpl5Vf8s6qepophjqcd9y6oEib822WsKJ826cGUi3tuBiUTNi-nw/Image-2011-11-30-13h50mn40.jpg?psid=1


https://public.bay.livefilestore.com/y1pe_qisRVWPplmDk8DNA0ZWWPO_oiuATRI9FxJauAQgRQPO-5SMoBukgLM_dPm0e4eE9FPKyOsstoBWBPBXaslkQ/Image-2011-11-30-14h52mn1.jpg?psid=1

[Daughter of Time]

Stunning! Thank you Amzer! It's great to be informed.
And thank you Randles.

[Hervé]

Strongest so far (2.6 at 23:29):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-12-01_23-24_sp.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-01.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-01_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

INVOLCAN / Guardia Civil have open their own YouTube channel where they are uploading their videos from their flights over the La Restinga plume.

Here is one from November 29 in which Sarmiento de Gamboa is seen at the edge of the plume:


OhYqCxpoJbM



Today, December 1st, 3 vessels are cruising in the La Restinga area:

Ramon Margalef

Salvamar Adhara

Sarmiento de Gamboa

[Hervé]

Margalef's threadings overnight:


https://public.bay.livefilestore.com/y1p4jS9qx1K93Uod8YPT-zt9qwjhQMiqw3Pv-HwHzCfqI8yaVTLapiaUL2_6dtHsjUQLcHrj_6vBsKpthyj2Ghu7w/Image_00063.jpg?psid=1



Gamboa's flight over El Hierro... (GPS connects the last known positions):
https://public.bay.livefilestore.com/y1peJ-qfBDkSBXmMYnsWWISV02zJOUIxh4wzCzxm13mcLvaII6lOHEXCofxIuNWWCOCN1pUvi2eIrqEdIJMbQe6Lw/Image_00064.jpg?psid=1



Salvamar Adhara check out:
https://public.bay.livefilestore.com/y1pZM6WWr6DP0OB-smqgikvU77HxkP1yxTjmDm1e9EcJIO3s2kuSNamz1t14eEfAWCrwz4l6BakKL0AzdxX0EdJfA/Image_00084.jpg?psid=1


https://public.bay.livefilestore.com/y1pXpwoD5qG5E6kqHem6Bs18S2INBxDdBZcjBOCa0kcARUsm3qirLQJFwzBlXxj6xsRWYeSCCYm8QGXYQT8kcGrHw/Image_00085.jpg?psid=1



Concert Margalef-Guardia Civil:
https://public.bay.livefilestore.com/y1p-EgfYHUz_iVmk4fNv-i8t_r8eyF1esFdWHXCvqX1r3LX0PSIGp6zqTZoqIc471if2bV4QJfqmDXrMAWrQ7xuPg/Image_00075.jpg?psid=1


https://public.bay.livefilestore.com/y1pxQ8RC1-pn-nTfm4XSL9xJ5fBmZ--gCN5maN1IfuqjF81oLC6IXx55eTW8ZL-dXrvaTPnPwLslTg2qGdYuVIUMg/Image_00077.jpg?psid=1



Camera oddities...
https://public.bay.livefilestore.com/y1pOR1LTa0aZOw0wsJSIB9z4Suy0HWhwpmae70HeteCUS4eSVUEU4dnhNKk170Y_xXxYZj6ZGmoWHnzV20mOVn2-g/Image_00067.jpg?psid=1


https://public.bay.livefilestore.com/y1pyvZzpdLWhj7-8Yaq2UWMvSszNIqAlJiYfiZCzg4isxYS6S2QjiuSTY-G1ZrplOMpx8HKfCDnzd6f67KSJNY3GQ/Image_00086.jpg?psid=1


All keeping an eye on that ever growing multicolored plume...
https://public.bay.livefilestore.com/y1plsRH3nsFGTAD13DNUTFycJWitsoawcsFcKj9BivkqC0DyXbuDlXk1xsp5z8l-EDnnBAwRlFdQuH3zDHxv6dRdQ/Image_00065.jpg?psid=1

[Hervé]

Ever changing color and shape of the plume:



https://public.bay.livefilestore.com/y1pNrgGQAZbRNvQktL_g3cVEmJjckbnb0prG6nDfxk0PQx4Q5PrwwcmoRhrhNOlcaKT7VXCsdE5EZV6U8J7RBdOMQ/Image_00087.jpg?psid=1




Time to report back...
https://public.bay.livefilestore.com/y1pU8vhuAPDw1os4dtkesZEgUxOiM38CFPuUS5JCXnwMuN1aMx-sV4jI0SGwDsD8b737onAWr-571OTikQjynax8g/Image_00068.jpg?psid=1


https://public.bay.livefilestore.com/y1prh6nsz9JkQ0aK8QgjmzcZkqA8IbNF3aMsCSxp1e0GhkjyxPADKMnhmJB4Tv6vcgrt82uyOvYskhQS_5qm3LR2Q/Image_00069.jpg?psid=1


https://public.bay.livefilestore.com/y1p76R7OgU5pkCqFQZ5MC2lw9ZUUAdqka_gBf0XLKCTXWvDTZfxzIHEfADU5TGvRN9VBDObbfBI_r6JOwc3Vr9UdQ/Image_00072.jpg?psid=1


https://public.bay.livefilestore.com/y1plsRH3nsFGTAD13DNUTFycJWitsoawcsFcKj9BivkqC0DyXbuDlXk1xsp5z8l-EDnnBAwRlFdQuH3zDHxv6dRdQ/Image_00065.jpg?psid=1



New camera view of La Frontera:
https://public.bay.livefilestore.com/y1poF2zkn2eAF9qKhdYeICJPf-OBKw5n_HT62yKX1S7qnkad-DYpSsX6kyU3n3tCPgREvpq4FiMLh7MNhW2wf1xUg/Image_00088.jpg?psid=1

[Hervé]

From space yesterday:


https://public.bay.livefilestore.com/y1pnB_0GV12b6Ey-R-5peuz-3PPzLu1-BQMrp7z16v8uIepxN87E6tGllxr_i3uY-4DrwkyP0tM9bsn1Re7A6FY9Q/Image_00089.jpg?psid=1

[Hervé]

New release of INVOLCAN/Guardia Civil pictures from the 14th of November:


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/383056_297766460256753_134042953295772_978860_1562544390_n.jpg


http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/385474_297766690256730_134042953295772_978862_1051854763_n.jpg


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/384342_297766060256793_134042953295772_978857_561163313_n.jpg


http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/388070_297766113590121_134042953295772_978858_993723469_n.jpg


http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc7/391983_297767236923342_134042953295772_978867_2011060550_n.jpg


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/382669_297765853590147_134042953295772_978854_1238271495_n.jpg


http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/381365_297767160256683_134042953295772_978866_246626697_n.jpg


http://a7.sphotos.ak.fbcdn.net/hphotos-ak-snc7/378419_297766950256704_134042953295772_978864_1221621662_n.jpg


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/386375_297766756923390_134042953295772_978863_1100180326_n.jpg

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/1111(71).JPG&Width=635&Height=238,125&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Pyroclastics ejected by the volcano this morning


Research continues in the waters of El Hierro


Earlier today, at sea, steaming pyroclastics came up which disappeared leaving a large brown stain .

DIARIOELHIERRO.ES, writing (12.01.2011. 15:52 pm)
Oceanographic vessels Ramon Margalef and Sarmiento de Gamboa continue their research in the waters of El Hierro at the request of Civil Protection Plan for Volcanic Risk (Pevolca) with the aim of providing advice to the scientific committee integrated in that plan.

In this matter, the ship "Sarmiento de Gamboa" finishes its work today with the conducting of bathymetric, gravimetric and seismic profiles which began last Tuesday. To begin with, the campaign was originally planned as a research on the continental shelf of the Canaries.

It is reminded that the issuance of this ship involves the Geological Survey, Marine Technology Unit of the CSIC, the Spanish Institute of Oceanography and the Navy Hydrographic Institute.

For his part, Spanish Institute of Oceanography (IEO)'s Ramon Margalef's part six of its Campaign Bimbache 2011 runs until December 3, focused on multibeam bathymetric survey with sediment samplings and acquisition of echograms of the water column.

This research will provide important information for monitoring the eruptive episode and will be soon joined in this task with a second ship of the IEO, the Cornide de Saavedra, which will continue the data acquisition initiated by the Canary Islands Oceanic Platform (PLOCAN) and Ramon Margalef on the study of physical and chemical evolution of the slick from the volcano.

Eruptive processes

Scientists at the National Geographic Institute, on board a Search & Rescue vessel, ascertained that the pyroclastic appeared early in the morning today then disappeared and gave way to a brown stain, composed of fine material, which spread very rapidly on the sea ​​surface. Maritime Rescue Cooperation is being helpful for nighttime inspections, recognition of the area and collection of water samples, necessary to determine their physicochemical properties.

Regarding the seismicity, it should be noted that IGN has confirmed that only 3 earthquakes occurred during yesterday; at 9:00 am, 16:17 hours and 23:25 hours, none of them felt by the population . According to the provisional data from the Institute, until 13 pm today, there had only been two earthquakes with magnitudes less than 2 on the Richter scale.

The tremor signal has remained constant throughout the day, showing a slight decrease over 15 hours and mid afternoon. Notably, there have been few pulses, and of low amplitude, and the analysis of the data yields no evidence of any second source of tremor.

Finally, it is noted that the stations monitoring ground deformation show that the deformation maintained the pattern of recent days, following the same trend of deflation in the vertical component of the stations south of the island and east of the Gulf and stability in the horizontal components .

[Hervé]

From this morning Guardia Civil flight:

Reaching La Estaca...


http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/384704_298244780208921_134042953295772_980103_320912583_n.jpg




Wrapping around La Restinga...



http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/392935_298247643541968_134042953295772_980111_164978245_n.jpg


http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/374031_298247916875274_134042953295772_980114_674983571_n.jpg




Far cry from what we can see on the webcams...



http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/380146_298247950208604_134042953295772_980115_1001826711_n.jpg


http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/388604_298248113541921_134042953295772_980116_1907642718_n.jpg


http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/384591_298248223541910_134042953295772_980117_1086064860_n.jpg


http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/381691_298248456875220_134042953295772_980123_2107245922_n.jpg




Ramon Margalef daily mud bath...



http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc7/380381_298248500208549_134042953295772_980124_1080052699_n.jpg




... complete with fresh-out-of-the-oven beauty pumices...



http://a8.sphotos.ak.fbcdn.net/hphotos-ak-snc7/377123_298248723541860_134042953295772_980126_565725484_n.jpg

[Hervé]

Interesting data offered at Volcanocafe. com (http://volcanocafe.wordpress.com/) by Geolurking from a preliminary study of S-waves and the speed at which they seem to travel under El Hierro.

To understand Geolurking's graph, one has to know that seismic S-wave cannot travel or be propagated through liquids or gases. Another property of S-waves is that the denser the propagating medium, the faster the wave travels. Density of the propagating medium being also an index of the porosity of that medium, it therefore can be correlated to the amount of liquid/gas it's hosting.

Using both P and S waves travel times and the difference in time it took them to arrive at a particular station, knowing that P-waves are not hindered by the state of the propagating medium; the arrival time difference can be correlated to the density and therefore the porosity of the material the S waves travelled through.

Combining the above, when a medium is somewhat porous and therefore hosts gases or liquids, whether water, hydrothermal fluids or melted rocks, the S -waves slow down in their propagation speed, lengthening their travel time.

Accordingly, the slower the speed of travel/propagation, the higher the liquid/gas content inferred from the geater differences of travel time between P and S waves.

Here is his graph (note the graph's top starts at a depth of 10 kilometers) and some of his comments:


http://volcanocafe.files.wordpress.com/2011/11/original-image.png
Image: GeoLurking, rights reserved. The original image that started the discussion. Here we can see what might be a magma chamber, and the feeder tube that goes down into the deep. Location of the inferred magma chamber is below Tanganasoga volcano.




When an earthquake appears in a seismic catalogue, you are given the latitude and longitude of the epicenter, and the depth. The addition of depth turns that position report into a hypocenter, because it locates the quake in three dimensions. In the more detailed phase portion of the reports, you can obtain the arrival times of the quakes. Take the difference in arrival times for each station with respect to the event time, and you have how long it took for the quake’s energy to reach the station. Knowing the distance from the station to the quake, and you can work out the speed of that seismic wave.

P-waves are compression waves, much like sounds are a compression waves. The molecules move toward and away from the direction of travel. S-waves are transverse waves, they move side to side with respect to the direction of travel. The density of the medium that the waves travel through affects the speed of propagation, or how fast the waves moves. S-waves cannot travel through a pure liquid as S-waves.

When the rock density goes up, the difference in the speed betweed P and S waves grows smaller. With lower rock density, the speed difference grows larger.

Again, my standard caveat: I am not a geologist and am not trained in that field. I could be very wrong in my methods. Take it with questioning view, which is sane way to look at it.


One could say that the ground under Tanganasoga is made of Swiss cheese with it's cohorts of ancient lava tubes, etc...

However, the additional data of ground deformations and CO2 releases in that area do suggest that, although Swiss cheese, the holes may be indeed filled with hydrothermal fluids if not magmatic melts... consideredring that Polly is not that far away and spewing smoking Restingolitas once in a while.

What's certain is that the magmatic melts didn't follow the old Tanganasoga Swiss cheese path but ended up in front of La Restinga; meaning it was the free-est and easiest path to surface.

Hopefully, the gravimetric and sismic campaign of Sarmiento de Gamboa will soon shed better light on the underlying structure of El Hierro.

[Hervé]

El Hierro from space yesterday, December 1st:


https://public.bay.livefilestore.com/y1p9L8uNAqE7nhTM0oLQH_Y6xRmMfYHOjaCziYonAHQQvs4k4EtK_MSj2nX9tJX1H9Wap7GrfJYx5kjLE5_sNBIqA/Image-2011-12-2-2h2mn22.jpg?psid=1

[Hervé]

Strongest so far (2.8 at 04:07):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-12-02_04-05.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-02.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-02_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How it's looking like now from Las Puntas de La Frontera:


http://laspuntas.myipcamera.com:1024/img/snapshot.cgi?size=3&quality=1?



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

Birth and evolution of a new volcanic slick:

Early morning, the "normal" green stained sea... being checked out by Search & Rescue Sasemar 103 aircraft (not a seagull, right in the middle of the sky):


https://public.bay.livefilestore.com/y1plFxz5qMPxY7nZYi3hGfBd1_teU20tu_IWyCsn6wUhKR37gaWyv_3PflYm_lr1UuXhEaKbNI1XiPcEsdfCum7iw/Image-2011-12-2-5h22mn58.jpg?psid=1



The green sea when Ramon Margalef enters the scene:


https://public.bay.livefilestore.com/y1pBrgCrLDkFdah1WdbPaMMwf8mASBsbFoHmvScblQF7kwtzIqrwQEBTy13Liqq_ZGwB44W5YhBkiMdX6cePa_z_A/Image-2011-12-2-5h36mn2.jpg?psid=1



Nice size waves... new Jacuzzi starting...


https://public.bay.livefilestore.com/y1pOaLGgkvLW9YNxlPWRXjE7CDC0BAxttfAY60Br9r66pMhE82nUOAlOiRoy84VNBsYbf9Y6C3ayxQKvY0-tTmfOg/Image-2011-12-2-5h25mn57.jpg?psid=1





Jacuzzi bubbling while a sailboat under engine heads for the harbor...


https://public.bay.livefilestore.com/y1pee3JfOhiae7sSuUFBqpeFGbcRYGy7OFTyJXuUwYkXvH4CqqfUfAZPrNJybAIfkXAtIyGQGZRTXADMBULlskhGQ/Image-2011-12-2-5h47mn29.jpg?psid=1



https://public.bay.livefilestore.com/y1p7FhEf4FtO_X3-dEGF-HZBOIy2wuuQ8FRBguIWNbhehemH-Q2Df_8AnPGB01Z3ECivcVlSb65nwLUfulGYLd6tg/Image-2011-12-2-5h37mn42.jpg?psid=1


Safe for now... while Polly still spews more out...


https://public.bay.livefilestore.com/y1pPlQ9XFT2GWfX85z9wxir_DNrdWO3jGy7ZD4fNbSQXZZcnOy66MADXpq71ZqnVWgccACnQPrhU0RpUzmkt3Kl-A/Image-2011-12-2-5h50mn3.jpg?psid=1



Correcting course... slick getting more defined...


https://public.bay.livefilestore.com/y1pLCnY7gQVpJIbVZVbD7udRtjIvk9MD6U4hl1Pu0VH8t9hbFA6ksWkwgzVDemjqgxhqQwGmgDLrg32Zg8pFvGQmQ/Image-2011-12-2-5h30mn59.jpg?psid=1



Grey slick now well defined...


https://public.bay.livefilestore.com/y1ppn7b7e-0RNJrZnxOR_-R4nm7S5Q1SjtGroIZY0-UDKxOZQfsRsrlSlGtTEUAZoPr7hHHqGxNzzqEWTPOulpWwA/Image-2011-12-2-5h34mn40.jpg?psid=1



On the scales of greys...


https://public.bay.livefilestore.com/y1psdMg_T0R5rdcJsyLodCdTdhGMMdGPQrYPbkOoltXyt_bYoyORfjdEUPFMBzvXqc2L1Ib8Hajd0nnbPcFAQKdhQ/Image-2011-12-2-5h39mn21.jpg?psid=1

[Hervé]

Yesterday's video from the INVOLCAN/Guardia Civil flight:


8ScTJCkQJk4

[Hervé]

***


Since July, IGN has officially logged 11,916 tremors at El Hierro... and counting since seismic activity is still ongoing!

Meanwhile, this thread just went by 65,000 viewings....


Thank you for your support and for dropping by! :wave:



http://i38.photobucket.com/albums/e105/CommentCrazyGirl/Smileys%20Hello%20Wave/greet013.gif



thank you.......

[Daughter of Time]

Congratulations! That's a lot of viewings! But I feel that not enough people thank you for your hard work. Anyhow, I'm sure it is appreciated by all.

[ViralSpiral]

This is one of my favourite threads!


I am one of many who visit regularly...


http://sixtorivera.com/wp-content/uploads/2011/04/thank-you-smiley2.jpg

[Hervé]

Strongest so far (2.4 at 18:34):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-12-03_18-19_sp.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-03.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-03_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.


See top of page for the other auto-updating diagrams

[Hervé]

Anecdotal side-note while on the... sniff-sniff... trail of... sniff-sniff...


Remember this guy?


https://public.bay.livefilestore.com/y1pJfahxLJ4ch2gZCKTO0thTeLlj5Jzed7iSimzuiZkhtz3GgnTcgX06lFyLKADU0DDhxrJKAMqvJBE2tozOZgb7g/Image-2011-11-29-5h36mn59.jpg?psid=1


Remember what it said in one of those articles?



[...]

Research continues in the waters of El Hierro

[...]

In this matter, the ship "Sarmiento de Gamboa" finishes its work today with the conducting of bathymetric, gravimetric and seismic profiles which began last Tuesday. To begin with, the campaign was originally planned as a research on the continental shelf of the Canaries.

[...]


"... originally planned as a research on the continental shelf of the Canaries."

Sooo... that vessel was generously lent to Pevolca for two days in the name of scientific knowledge...

What was it diverted from?

What was the original campaign about Canaries Continental Shelf?

Who would be interested in sismic and gravimetric profiles of these islands continental shelves?

Remember that speculation about if a new island were to appear out to sea?

Who would it belong to: Canaries or Morocco?

Morocco... hmmmm... who are the kings of seismic profilings anyway?

Well... these kind of guys:


https://public.bay.livefilestore.com/y1p2S5OUbYh6gHPcJeB1DU-VS6rs-fvF2kZUxBpxZFJzXM4rkt8-oQw0SDnI1rfLvE4gRZkIpoaOc3Pzgb0FPAb7Q/Image-2011-12-3-0h54mn3.jpg?psid=1


https://public.bay.livefilestore.com/y1pxlAyFSAv93LTFZsIit2BW7GxeI0k6wQSCd7AMDOCOQbM9aXgKBONAYRljfEbDHhh7YJrOyGiIQWrdZTXZdFnIw/Image_00098.jpg?psid=1



Think of it... who would finance such an expensive campaign of a large research vessel? ... and why? ... if there weren't any profits to be made out of it?


Yep... as I said... anecdotal... sniff-sniff... always, always, always... :wof: ... $$$$!

[Hervé]

New webcams webpage!

4 webcams vistas available!


https://public.bay.livefilestore.com/y1p8WzXgyd2QoAWj9nW54BSHa6aSQ5SW9D9MDewvFxyo4mDriIVviJXDiP2vg2Nyy0gwVnqvPhZxIlq2qER0gduAA/Image_00099.jpg?psid=1 (http://hierroendirecto.movistar.es/)

Click on picture to get there!

[ViralSpiral]

https://public.bay.livefilestore.com/y1p2S5OUbYh6gHPcJeB1DU-VS6rs-fvF2kZUxBpxZFJzXM4rkt8-oQw0SDnI1rfLvE4gRZkIpoaOc3Pzgb0FPAb7Q/Image-2011-12-3-0h54mn3.jpg?psid=1


https://public.bay.livefilestore.com/y1pxlAyFSAv93LTFZsIit2BW7GxeI0k6wQSCd7AMDOCOQbM9aXgKBONAYRljfEbDHhh7YJrOyGiIQWrdZTXZdFnIw/Image_00098.jpg?psid=1



http://www.freesmileys.org/smileys/smiley-shocked007.gif


*cough*

[Hervé]

From space yesterday:


https://public.bay.livefilestore.com/y1pEiUl40W_QpRF1sn-RlrmKtgXNDClgZz2ShYEHzupNl6nTBVBJIpzUwYYycojvTXjSJEH9FR7tgoffc6KjRMVUg/Image_00101.jpg?psid=1

[Hervé]

Quite a bubble jet!

Guardia Civil / INVOLCAN video from November 8, 2011:


OmloOL8jlwY

[Hervé]

http://fotos01.laprovincia.es/fotos/noticias/646x260/2011-12-10_IMG_2011-12-02_22.10.18__5962708.jpg
One of the spots caused by the eruption underwater off the coast of La Restinga, south of El Hierro. img. PEVOLCA

The sulfur dioxide emission is reducing in El Hierro.

The seismicity also continues to decline in the island.

8:02

LP / DLP
Las Palmas de Gran Canaria:
Emission rates of sulfur dioxide (SO2) by Volcanic activity in El Hierro have reduced significantly during the last month, the volcanological Institute of the Canaries (INVOLCAN) revealed yesterday. In fact, scientists at the research center have reported rates of less than five tons per day generated by underwater volcanic activity south of La Restinga, since last November 10,. On the other hand, seismicity also continues to decrease in El Hierro, in fact, yesterday there were fewer than six earthquakes to between 16 and 23 kilometers deep and a maximum magnitude of 2.8 on the Richter scale.

Yesterday, the direction of Pevolca forwarded to the population, "although we are in a period of stability, the eruptive phenomenon is not completed on the island of El Hierro." Therefore, Pevolca added, the Civil Protection operational deployment remains and it is recommended that people follow the information from the authorities.

The highest rates of emission of sulfur dioxide (SO2) into the atmosphere, provided by INVOLCAN, were recorded on November 6 and reached 109 + 9 tons daily. "This observed maximum emission rate record of sulfur dioxide (SO2) is also relatively lower than those normally recorded in subaerial volcanic systems found in eruptive phase," added sources of this Institute. "This is because a significant portion of the emission of sulfur dioxide (SO2) by the underwater volcanic activity south of La Restinga does not reach the atmosphere since it is absorbed by the sea because of a neutralization reaction between acid volcanic gases and the seawater of alkaline nature contributing to lowering the pH of seawater. "This has been reflected also in the measurements taken by research vessels Professor Ignacio Lozano and Ramon Margalef, the Canary Islands Institute of Marine Sciences (ICCM) and the Spanish Institute of Oceanography (IEO), respectively.

No vents or fumaroles

On the other hand, INVOLCAN stressed yesterday that the volcano island of El Hierro, which corresponds to the above sea level part of the structure, there was no sulfur dioxide emissions "since there are no visible volcanic gases emissions of relatively high temperatures (fumaroles, plumes) in the terrestrial realm."

Measurements of sulfur dioxide emissions were performed using high-tech and large capacity instruments, such as optical remote sensing and COSPEC miniDOAS type of mobile air-units with the support and collaboration of the Helicopter Service of the Guardia Civil in the Canaries.

[Hervé]

ElDIA.es

EL HIERRO

Requires that you remove the volcanic risk red semaphore in El Hierro.

Valverde (El Hierro), EFE:
The Socioeconomic Monitoring Insular Commission has demanded the withdrawal of volcanic risk red semaphore in the village of La Restinga and the yellow one on the rest of El Hierro, once you consider that they are normal after the volcanic quake crisis.

The commission consists of representatives of municipalities, unions, business organizations, members of various political parties and agricultural cooperatives, among others.

Everyone involved in the Socioeconomic Monitoring Insular Commission have reached agreement on issues such as absolutely reject the record of employment regulation (ERE) raised in the Parador de Turismo de El Hierro.

They say it is a leader in the tourism sector of El Hierro and accepting employment regulation file would be a negative example for the industry, and the commission sought an employment plan that will generate island work permanently.

They have also expressed the need to create a one-stop care for those affected by the volcanic earthquake crisis, and to centralize all aspects of government aid.

Speaking to EFE, Alpidio Armas, president of the Cabildo de El Hierro, said that the Socioeconomic Monitoring Insular Commission will be responsible for managing and coordinating all actions in terms of insular economic recovery.

Also, Alpidio Armas reported that various actions have been finalized with the airline Binter Canarias through which the ticket price be reduced as much as possible to fly from Tenerife and Gran Canaria to El Hierro to promote the island's economic recovery through tourism .

[Hervé]

Ramon Margalef docked at La Estaca:


https://public.bay.livefilestore.com/y1p3YZECA7wPudbwRRsccEN6Za_SbwsDduGbRzEmq_F_eLkuUFaAtrAKAwRUb9dyLavKbhkhVMDCPralnXwRtvQdg

[Hervé]

Strongest so far (2.4 at 12:36... 40Km deep!):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-12-04_12-13_sp.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-04.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-04_sp.jpg

From Wikipedia:A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.



See top of page for the other auto-updating diagrams

[Hervé]

Not much happened yesterday... the last logged earthquake was a 2.4 at 6 pm... nothing above 1.5 since.

The Guardia Civil Coast Guard tumbling its way to La Restinga, back from patrolling around...


https://public.bay.livefilestore.com/y1pIAgRWpzKHRsIR07S1ODvAblmQf0FW8H0HmC2colTV9tEmYbVZGHB-Dc0JasKxI7mx8hXUyH0fWn20UYRSM3xjg/Image_00105.jpg?psid=1




https://public.bay.livefilestore.com/y1pEh0WaJxfgSvhfiil8ZX0OaJrYnyI1b-3LuQLKHccWsy0K73HAgo_AS5lCk5ZWTd8hULzVzHMP1AC8U444TcsUg/Image_00124.jpg?psid=1



... till some tourists came sailing around Polly on shortened sails...


https://public.bay.livefilestore.com/y1pz3gq41PrF3zYY3d6tOX4VyJAywBcb-aJ4nJJxFoA21g9Qek4iqLONvoDjWeTmJJ-RKiP8udaLdUgzPDiZQTxDg/Image_00106.jpg?psid=1



Back out again...


https://public.bay.livefilestore.com/y1pmdw4BmN6KOuF5y0QU8ivIFyZAZ1C3SSENcAJpRJ1JDM2_doBSTsF0xtvJ9ZF7DmVEKcuQ5b9W2xCNRa_bSdeYA/Image_00125.jpg?psid=1



Rooster-tailing toward the intruder...


https://public.bay.livefilestore.com/y1pz3gq41PrF3zF-hwerPMemuMITwVxFUN1eoSGwnuyr_jOiPwZQCgTpi5zk8dCGPf-od0eoOGJfUzUEcQpac6yew/Image_00111.jpg?psid=1



Now heading back to La Estaca, tumbling even more while Polly keeps quiet...


https://public.bay.livefilestore.com/y1pYqss0--MsZuQA3EdB0MHlgiXCH3uN8dLE_GGJR1KmNTtlkC5D9Ktlg-JlmUw8LzuVLDnxXt9qSSteGI0GxLHoA/Image_00115.jpg?psid=1



https://public.bay.livefilestore.com/y1piAh1MuxDZLvZXkFo1Z1JAJ5E9PJ9ZcfZTd-AnYL3rYmIeAkFEC2eRkHGTK0LeNxDeGHGq1Fwopup_vL6Wrr_HQ/Image_00120.jpg?psid=1



Meanwhile, wandering camera eye...


https://public.bay.livefilestore.com/y1pWEljgtQUClz4xDCGwA-YtQNkjDkCkvw3E_Cfre2dvCkiOApZpQtknSlWtpmUE49lAynZj9ds9wBRPoOnDupKRg/Image_00132.jpg?psid=1




https://public.bay.livefilestore.com/y1pvEDxjfVUhtQ9kpxNrIui8sUy3LY0DOOADHnC_A2eggmEuLVIEDwX2TQPRTXoJF8UR0gLc7BLqi2gG4j5TfXD6A/Image_00135.jpg?psid=1

[Hervé]

First EQ in 18 hours... from 40 kilometers deep... that's a change!

Other than that, new evolution of Polly's plume from early morning when the old batch was drifting west (to the right of picture):


https://public.bay.livefilestore.com/y1pKvm4YuJ4jB5sfDq3pnqnAPEyljVpM8dbJ9zivVKr69VnCAp-om7enVnIi2qUkS6BgbaN5VzDHCRedRcaXExinw/Image_00182.jpg?psid=1


https://public.bay.livefilestore.com/y1pE8FOxtpxu97fh1igM5ZfCAxBr3421LbdepfTAKokawvpBVICVZ4Bv_oqARagtOBJBkggEvdy_2ke3-bftST9QA/Image_00185.jpg?psid=1


https://public.bay.livefilestore.com/y1pq5ITG8rcEkR8WKdvQ91MlIDVJ4pAiL6H5E1d6ilhdlg8CFV8DYxYe5NU0vUMv_GmJC6N1y6QbM8V2RBkY_3KjQ/Image_00190.jpg?psid=1


https://public.bay.livefilestore.com/y1phIE5PuVOcPIEaC4s3iLVVrvnr88JU3qT_pplPY77I3SRKPcBNEGlwdQSembpbTCWNkf_6jcN6qm7j5MC3yIiEw/Image_00191.jpg?psid=1




Then... Polly woke up:


https://public.bay.livefilestore.com/y1p7G5U65K5XLgFXCUGFfojoQb5V3J_2Gt72vdtJu_1xXFvptMDZvaPIZtJBdNUC-EZxdYoOv-c4pXet1le9McT_g/Image_00193.jpg?psid=1




... and that pale little smudge, above, kept growing from then on... but... extending eastward as well as drifting westward.


https://public.bay.livefilestore.com/y1pp-jqWtrywu35bpzaXDxfmsxninYuJ442OYDWiccPq9hf0MORmbhr-BXGqqfm3D45Ey0pF8sKRQj7hlMLRCJR2Q/Image_00198.jpg?psid=1


https://public.bay.livefilestore.com/y1pUr0SiRLpQsJfWPtLfDHleWl8flnAygJhY4oGoJf2z4MtM_6FzPJ3CKya3H7BqsuBxsgEQZXpz5Bl_UqK8r3Gow/Image_00201.jpg?psid=1


https://public.bay.livefilestore.com/y1p2UUFJ9Gt18S9503gIj-fIKX0Wf3J8fo6Z8n74cxmwGDJ9l4VoqFLa1UwPnSZc2MSKWuw-1k2wIbmerhkZ5WywQ/Image_00228.jpg?psid=1


https://public.bay.livefilestore.com/y1pmhDQBagKRnwija5VIsPVq5NdcZ5C-FPKmvXIwZwTaqOM1o_7uroSFD-YxJz_Ue9YuJCxv3d_o5ng1NaHJn5t6A/Image_00229.jpg?psid=1

[Hervé]

The whole thing was accompanied by smoking Restingolitas which must have been huge to be seen that far away:


https://public.bay.livefilestore.com/y1p2Xu56YjxOUIwLNZzgGUZH66goHjlNU6OsN7EAIvzqS4zoJZru2beSZGSJBGzLMIiR4Cm7z9ncHS-AX85ORna9Q/Image_00207.jpg?psid=1


https://public.bay.livefilestore.com/y1p_SvmsNLrRSPKzkty0vf8sdSyBSZ7fBwA2dFXXZBFucuj1lI5DPqtgfpqV1L3-6OvAxXL1gazUXz6VwRzeR3W_A/Image_00208.jpg?psid=1


https://public.bay.livefilestore.com/y1p0BY9oHGLAEs-kfMCRJO5BW5baZciYTBGSi-q7hWyoI8fvOA_m2RFQWZgTfSJzP2k0NgzOWYPNR0FbrXTPaQtiQ/Image_00209.jpg?psid=1



Another one:


https://public.bay.livefilestore.com/y1pvIp6B0qNaZEco-5FF2CXcfPmtwKzM8lU2_R-9SM_OB6rFyjSRSZVepi0eRTvHnQHI4pxSKrGBJCsJ1FLsXMFMQ/Image_00212.jpg?psid=1


https://public.bay.livefilestore.com/y1pdJ_u-PfErOC0oF54EAHPmWzTqftH8jwP6ptlu3QYPUg8DgK-mKuIsuEq_Yxd2DckhnS50Jhz8VmTTDNJ45D6xg/Image_00213.jpg?psid=1

https://public.bay.livefilestore.com/y1pjSOgNzQMcV9b39M2N_fbUe-kZH6Y2icazEDnsjqvtCf8_bG-vcngxaViAlXHwVONvmnr9cTHxABGODy7LlXMrg/Image_00216.jpg?psid=1

https://public.bay.livefilestore.com/y1pZUjvntblKdvZSt9AHM1lHbX33nxjo_JajsTeJHpicaHAL4d6eF0XsY3v8xVMLa1ERBLKRKEZZrHGqqd53QBi9A/Image_00217.jpg?psid=1


https://public.bay.livefilestore.com/y1pUk4LfNok65siCG7GAwk1kFbT53XdQK3R9BXpf0ip0r4xTlbJ9ybyUgO_m0pCygE7ATrFa--Z0f7VVrHDAChX2w/Image_00219.jpg?psid=1


https://public.bay.livefilestore.com/y1pysvP_VeD1czbGoAN1p2Mb-ks4WENrqBfQ-PWS4HEZmBmI-mbfGZRKbH8EgMOi1Gt2It_2eeepjKmTYfH_BT_kg/Image_00220.jpg?psid=1

[Hervé]

Time-lapsed video showing in accelerated view the occurrences of this morning:


kzvyjj1n7rI

[Hervé]

Strongest so far (2.4 at 06:29):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA_SP/CHIE_2011-12-05_06-07_sp.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-05.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-05_sp.jpg

From Wikipedia: A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.




How is El Hierro looking like, now:



https://public.bay.livefilestore.com/y1py-PF7ziq7YKRFGr5NTdnvY3ct1F4a5dRPjHubQzZ5SGCHr1y-voinUuLubXOWE8kbArYerjuGdcZUp_QqGggfw/Image_00099a.jpg?psid=1 (http://www.hierroendirecto.movistar.es/)
(Click on picture to go to webcam page)



Refresh your browser to get the latest traces



For the last 10 days, following the count of EQs as shown by the orange bars (≥ 2.0), it now shows whatever Polly is up to as far as seismic activity is concerned:


http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/histograma_HIERRO_2011.jpg


New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!
http://www.01.ign.es/ign/resources/volcanologia/jpg/energia_HIERRO_10.jpg



Location of the EQs for the last 10 days:
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_10.jpg


Since the beginning
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011.jpg



Refresh your browser page to get the latest numbers and positions.

[Hervé]

http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/376018_300229010010498_134042953295772_985321_1354683721_n.jpg
INSTITUTO VOLCANOLÓGICO DE CANARIAS

This is an electron microscope photograph of black porous inclusions within the rhyolitic-trachytic material that we could baptize as white microfoam (the restingolitas inner white of October 12).

Despite the extremely low density of the latter (about 0.3 g/cm3), black porous inclusions show a higher porosity even that of the rhyolitic-trachytic white microfoam. The porosity of the target has a value of 78.6%.

Although with the electron microscope we can see that the visible micropores range from 50 to 150 microns in diameter, the estimated average diameter of the pore as a whole becomes of the order of 0.18 microns (500 to 1000 times smaller than the diameter observable in pictures).

A really exciting question is the debate over the origin of this white microfoam, around which revolve two ideas:

a) a magmatic origin and

b) transforming a siliceous content of more or less consolidated sediments with possible organic remains. Today we can not yet talk of conclusive evidence that lead out of the guesswork.

[Hervé]

Yesterday's steaming lava floats:


http://www.01.ign.es/ign/resources/volcanologia/Galeria_Fotos/fotos/20111204_IGN_050_L.jpg

[Hervé]

... so... that's what it was:

https://public.bay.livefilestore.com/y1pwDRYyogwOkSDX4bUYb7XbfltZ8CeY1pamMgmTliTNSSdbZyP8m0xmrFnp6a9zWgssBTiY0jL6WD541T0qGMsCA/Image_00132.jpg?psid=1

Special Events
Monday, December 05, 2011

TelevisiónCanaria (http://www.rtvc.es/notasdeprensa/televisi%C3%B3ncanaria-instala-una-c%C3%A1mara-para-el-seguimiento-constante-de-la-erupci%C3%B3n-7320.aspx) installs a camera (http://www.rtvc.es/volcanelhierro/volcanendirecto.aspx) for constantly monitoring the eruptive process on the island of El Hierro. This is an Information Services TelevisiónCanaria professional camera equipped with a special high power lens and has an operator whenever there is daylight.

The images are broadcasted constantly on the web link, and has already given high quality pictures such as those of the smoking pyroclastics of recent days, broadcasted both online and through TelevisiónCanaria Information Services.

The camera, located in a prime position near La Restinga, follows constantly the situation of underwater eruption located south of El Hierro. By having a dedicated operator who can focus on, and record, the activity not only of the eruption, but also of any events which are occurring in the surroundings of La Restinga.

The device has a 35mm telephoto lens which doubles the recorded image size, enabling one to achieve a level of detail greater than any other webcam installed in the area.

TelevisiónCanaria maintains this camera deployed for as long as necessary. This initiative is supported by Telefónica Movistar, IdecNet, Abertis and the Canary Islands Government.

[Hervé]

RTVC are not kidding when talking of high power lens and high definition of pictures...

... see, this is your normal, run-off-the-mill, zoomed Margalef:


https://public.bay.livefilestore.com/y1pX-QR4BR3PmO8HBMFftLMegxN72Oszmw9kCiiF6Uwa6B1eyP-olwUWkJR3NsVqi-WjYEXazwK5nPc8_WWZ7Kqsg/Image-2011-12-5-15h39mn15.jpg?psid=1




... and this is what RTVC camera can do:



https://public.bay.livefilestore.com/y1pzgSoNMpRH0iJ9c4QsC41hehuOb1N-7GIpPZdfv7lpOjgwk6kVQtSaEYJMKf1sYdn31y34BH6SWmtDz7d_g4SYg/Image-2011-12-5-15h40mn11.jpg?psid=1


https://public.bay.livefilestore.com/y1pW-AUWNpyenB1_A-6rdzbDRxSIjCgd-8ns-mJx4gUp3uHInHm3EfyKJgxC2PlOuojF2yQbshXISDEj0cGb9YUrg/Image-2011-12-5-15h40mn40.jpg?psid=1




... from way overthere:



https://public.bay.livefilestore.com/y1pu8fbpplxnS19h0hkyx1D2PP7neAEylllII4MjUz1URfh0ETCODZEOc2vOHSOgJiu_Z_98I8gr3qGM-lptRiCeA/Image-2011-12-5-15h43mn26.jpg?psid=1


https://public.bay.livefilestore.com/y1pB_fk_cDp9qwAfdsKPSHzL2HPROCSk4soq1TzK1jgZNU0VtNJOohoLnDFy__BAfRAhlxFjHO9vmyN_FBwnGw-DQ/Image-2011-12-5-15h44mn3.jpg?psid=1




... even better... see that dark spot almost at the horizon? That's still Margalef...



https://public.bay.livefilestore.com/y1p9r1lIMRHuNMVRmkCI_1EBD_W-sGvYQnksKemJISY4FxpX_y9JI3pkEchFZZi3EzItxJnOIfjNnjwwZQqMBmZxg/Image-2011-12-5-15h46mn37.jpg?psid=1


https://public.bay.livefilestore.com/y1p9r1lIMRHuNPMKNbZNHaZ4HE4cXBx045b0-MeNna3sj0_nh400zl5jSd-2BIc56_szB8rPEUEITWzidlaiDwkCA/Image-2011-12-5-15h46mn51.jpg?psid=1



... turning east:



https://public.bay.livefilestore.com/y1pMEXEuHeWVSli_Kxdrbyx4UfK3bW0zFbSeHajNMvUOsByxLG7pHwMPv1_GyMs8RaD2HZiVXnKjuB87B8evSXfWA/Image-2011-12-5-15h48mn24.jpg?psid=1



... from there to satellites being able to read what you twitt around... :p


All screenshots, unless otherwise specified, par moi.

[Hervé]

Strongest so far (no data):




http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2011-12-06_09-10.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2011-12-06.jpg



Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA_SP/CHIE_2011-12-06_sp.jpg

From Wikipedia:A Harmonic tremor (http://en.wikipedia.org/wiki/Harmonic_tremor) is a sustained release of seismic (http://en.wikipedia.org/wiki/Seismic) and/or infrasonic energy typically associated with the underground movement of magma (http://en.wikipedia.org/wiki/Magma) and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.



See top of page for the other auto-updating diagrams

[Hervé]

Interesting... no earthquake logged since yesterday to this time, and a seriously reduced harmonic tremor... yet Polly's burping lava floats non-stop since the early morning... go figure?

Here is from Earthquake-report.com their YouTube posted, time-lapsed videos of the morning (from the inaccessible, to most, RTVC camera):


MlVI1Ww4nLI




... and Salvamar Adhara fishing the Restingolitas:


pASf85b6pZg




Totally agreeing with Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/) on their assessment of the camera situation:



Update 06/12 – 09:16 UTC




A lot of readers will be mad at us when we tell them to look at the webcam for SLS (smoking lava stones). Lets make an overview of the present multiple webcam situation :



- RTVC webcam : a few minutes after messaging the news of the SLS : no signal anymore. Did we cause too much traffic or simple equipment failure ? Update 09:18 UTC : working again




- Telefonica / Cabildo webcam : not zoomed (of course) – Our proposal stands : give the operator handle to the AVCAN people.





- Ustream : fixed webcam – is directed to the right of the vent – Our proposal : direct the fixed camera on the vent (the main vent has not changed since the beginning!




*********************************

Seems somebody at the Ustream webcam read/listened... they finally repositioned their second/zoomed camera on the right spot!

*********************************

Seems that the Telefonica/Movistar guys are back from being out to lunch too...

... still advertising that Adobe "Buffering" thingy though...

[Hervé]

I think this is the guy we are indebted to for all the stunning pictures of the plume/stain/jacuzzis/smoking Restingolitas/etc...

A big thanks to him!


http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/379073_301218056578260_134042953295772_988035_2008036625_n.jpg

Sometimes you lack hands to capture the spectacle of underwater volcano ...

[Anna]

Thank you Amzer Zo, for your diligent work in keeping me and others informed, I am much obliged.

hug from Anna

[Hervé]

Here is yesterday's INVOLCAN/Guardia Civil's batch:


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/390059_300976483269084_134042953295772_987116_1601778666_n.jpg


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/390171_300978889935510_134042953295772_987129_331225470_n.jpg


http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/390195_300980186602047_134042953295772_987152_925680876_n.jpg


http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/383963_300979153268817_134042953295772_987132_7774695_n.jpg


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/391061_300980573268675_134042953295772_987160_1640427747_n.jpg


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-snc7/389809_300980249935374_134042953295772_987154_1040148278_n.jpg


http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc7/374621_300980293268703_134042953295772_987155_590988698_n.jpg


http://a8.sphotos.ak.fbcdn.net/hphotos-ak-snc7/387296_300980376602028_134042953295772_987157_1159480536_n.jpg


http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/383000_300976579935741_134042953295772_987118_343650669_n.jpg