Tirelessly updating Avalon on the El Hierro eruption.

[Hervé]

Strongest so far (no data):

For the day:

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of 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:

(Click on picture to go to webcam page)

Refresh your browser to get the latest traces

For the last 10 days, it now shows whatever Polly is up to as far as seismic activity is concerned:

(I still have a hard time with IGN scaling half earthquakes...)


Since the beginning

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

Location of the EQs for the last 10 days:

Since the beginning

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

[TWINCANS]

Posted by TWINCANS (here)
I must say that Darla's post is where I am on this, particularly where she says to remain open to how you CAN leave the island. Not today or tomorrow but in a matter of months. Also you have a child to consider. Think too that once the crisis is passed (18 months abt?) you can return, perhaps.

I am feeling that the time frame here is 5 (or 6) - 9 months and the danger level is 75% that a strong event could occur ie submerging the island(s) and that the 18-month mark will see the story played out.

As to how we can also help here to release the pressure on more than one location along this zone, a group meditation as suggested is also a good one. I'm in.

Sory if that's not all warm and fuzzy but this timeframe carries challenges. While calmness is key along with holding the positive view, discernment is very important imo. We must all be ready to move at a moment's notice which means that we should release our stuff and carry very little baggage day to day.

I haven't heard any more about a possible move by Randles but I do remember that when I got this 5-9 month timeframe, I also got to watch Puerto Rico as a marker. Dutchsinse has just posted this about a swarm of tremors in that area. Just an FYi to keep an eye on.

http://sincedutch.wordpress.com/2011...-swarm-update/

[Hervé]

An overview of the Restingolitas saga from:
Jose Luis Barrera Morate


Geologist, specializing in volcanology. Author of 54 geological maps at 1:25.000 National Geological Map of the Canary Islands, among which are those of the island of El Hierro

Crisis volcánica de El Hierro

The Canary Islands "float" packets of various sedimentary rocks
December 15, 2011 by Jose Luis Barrera Morate

The oceanic volcanism arising near the continental margins, is affected by the sedimentary deposits of these banks. The Canary Islands are no exception. On the island of Fuerteventura, one of the oldest in the archipelago are oceanic bottom sediments of Cretaceous age outcropping at the surface today. What is remarkable is that levels of marl and limestone are interbedded with submarine dark volcanic materials at the birth of the island. These materials were deposited from turbidity currents that transported limestone and terrigenous materials at the edge zone ("fringe fan") of a submarine fan, deep in the African continental margin.

While volcanism was developing in the archipelago, there have been many occasions when the rising magma has interacted with the seafloor sedimentary deposits of different ages. The precedents of this interaction are common in several of the Canary Islands. The last occurred in the eruption of Teneguía, La Palma, in 1971. Fragments were white and very porous, looking like foam, which were considered as rhyolitic igneous rocks, in a first interpretation made in 1973. Today, in light of what happened with the submarine eruption of La Restinga, they are reinterpreted as recrystallized sediments.

In La Restinga, the magma passed through some massive sandstones sediments debris (from the Sahara?), they recrystallized, lost water and became a white foamy rock texture. Early interpretations made ​​were deemed igneous, saying they were rhyolites and that authorities were minimizing the explosive nature of the eruption by saying that the rising magma was basanite and less explosive. These hasty statements with an exhibitionist tinge, violate the basic principle of precaution that must prevail in all steps of a crisis, creating confusion among the authorities and a social alarm that management does nothing to help. The geologist Jose Luis Gonzalez, crisis management expert, frequently says in his excellent blog about Natural Hazards page of the Association of Geologists, http://www.icog.es/_portal/inicio/inicio.asp, and other publications.

The first scientist to put sanity to this and showing that the alarm was unfounded, Tenerife geologist Juan Jesus Coello, who denied the rock's primary igneous character in his November 9 report illustrated with very educational colored drawings. Recently, new analytical data from several European universities have confirmed the sedimentary nature of the "Restingolitas" and finally settled the controversy.

Had a bit of research been done, they would have realized that, at the Henry Seamount, about 35 km SE of the island of El Hierro submarine rift, German geologists described in 2005 that oceanic bottom sediment contents are getting to the seamount from El Hierro (see image). It is therefore predictable that the ascending magma in these places incorporated sedimentary material and recrystallized it, as seen in the pyroclastics that first emerged in the Las Calmas Sea. No other floating, smoldering pyroclastic expulsions after the famous "Restingolitas" exhibited the same characteristics.

Hopefully in the future greater caution will be applied in formulating claims instead of being hasty, lacking rigor and not contributing to good crisis management.


***************************
His "recrystallization" is not quite accurate since the restingolitas are made of glass foams... and glass is "amorphous," i.e. without a crystalline structure...
***************************

For the complete saga see the following posts:

Post #1271

Post #1276

Post #1289

Post #1296

Post #1438

Post #1456


Post #1481

Post #1485

Post #1491

Post #1587


I find this statements interesting:

These hasty statements with an exhibitionist tinge, violate the basic principle of precaution...

Considering the "Dog & Pony shows" going on in other threads... not even hardened scientists are immune or impervious to it... in the form of grants for scientists.

[Hervé]

Posted by TWINCANS (here)
[...]

I haven't heard any more about a possible move by Randles but I do remember that when I got this 5-9 month timeframe, I also got to watch Puerto Rico as a marker. Dutchsinse has just posted this about a swarm of tremors in that area. Just an FYi to keep an eye on.

http://sincedutch.wordpress.com/2011...-swarm-update/

Hi Twincans!

See this post <--- click

For Puerto Rico, it would be when the earthquake graph show little activity that the anxiety graph starts climbing up...

May be you could get with Operator and start a thread on Puerto Rico trench?

[Hervé]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia:A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of 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]

From space yesterday:

[Hervé]

Now, here is some beautiful piece of work for the assiduous followers of Polly's rises and falls: time-lapsed videos covering the eruption zone of La Restinga since the day of the webcam installation, courtesy of the Cabildo/Telefonica/Movistar webcams operators:

http://www.elhierrowebcam.com/timela...day/2011/12/19

[TWINCANS]

Posted by Amzer Zo (here)

Posted by TWINCANS (here)
[...]

I haven't heard any more about a possible move by Randles but I do remember that when I got this 5-9 month timeframe, I also got to watch Puerto Rico as a marker. Dutchsinse has just posted this about a swarm of tremors in that area. Just an FYi to keep an eye on.

http://sincedutch.wordpress.com/2011...-swarm-update/

Hi Twincans!

See this post <--- click

For Puerto Rico, it would be when the earthquake graph show little activity that the anxiety graph starts climbing up...

May be you could get with Operator and start a thread on Puerto Rico trench?

Sorry but I'm flumoxed. Why Operator? And when I read your July posting I see that you interpret a more likely area of slippage to be Canary Is. Isn't that what I was alluding to - just watching the two areas' activity in terms of linkage? Actually, keep in mind it is not 'me' but info I got. Sorry if that is uncomfortable for you, not meaning to be.

[Hervé]

Posted by TWINCANS (here)

[...]

Sorry but I'm flumoxed. Why Operator? And when I read your July posting I see that you interpret a more likely area of slippage to be Canary Is. Isn't that what I was alluding to - just watching the two areas' activity in terms of linkage? Actually, keep in mind it is not 'me' but info I got. Sorry if that is uncomfortable for you, not meaning to be.

Because Operator lives in the area...

... and because since that particular post I learnt a lot more about the Canary islands... things that cannot be found on Gootube... a list of posts summarizing those discoveries can be found at post # 1808.

To quote from the above article in post # 1823:

The first scientist to put sanity to this and showing that the alarm was unfounded...

..and:

Hopefully in the future greater caution will be applied in formulating claims instead of being hasty, lacking rigor and not contributing to good crisis management.

This is about a scientific community which is quite conservative in its nature to start with...

As for the speculated catastrophe, I like the way randles put it in post # 1534:

Posted by randles (here)
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

[aquamarine]

blessed be and keep safe, we'll all hold your hand in spirit. much love sent to you and your family. you are in my thoughts

[Hervé]

From space today:

Hi aquamarine!

Welcome to Avalon and thanks for the thoughts!

[Hervé]

Actualidad Volcánica de Canarias (AVCAN)

NOTE AVCAN 393 - EARTHQUAKE-VOLCANIC ACTIVITY- HIERRO ISLAND - DECEMBER 20 2011-10:30 h peninsular - seismic-volcanic activity continues moderate to low, without seismicity localized, but with some weak events detected. Continuation of an important volcanic tremor signal in the Restinga area, with an amplitude that is going down since midnight, by more than 20-30%, especially in the last hours at very low levels, with some explosions smaller than days ago, possibly hydromagmatic. No new earthquakes located. Before yesterday 3. Yesterday 0. Today there's 1. A total of 11,936 earthquakes were located in El Hierro by IGN from July 19, 2011, 9:00 am.

[Hervé]

Regarding the harmonic tremor signal and the different interpretations different authors attach to it, I'd like to remind Avalon's readers of one important thing; and that is the long sustained whistling Polly maintained after the initial break through:

... that long, sustained whistling built a volcanic structure 150 meters high... magma outpoured freely and in high volume. The only diffence with the current situation might be that there is less degassing (green plume).

[Hervé]

Strongest so far (2.2 at 23:15):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia:A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of 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]

From space today:

[Hervé]

Strongest so far (2.8 at 09:11):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia:A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of 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]

Sarmiento de Gamboa is back to Las Calmas Sea for yet another bathymetric survey which we all would like to see the results of...

Nothing -- not Mickey-Moused -- has been published since Ramon Margalef's first survey and, even that, was apparently done against hell and high waters from some authorities... seeming to indicate someone is getting political weights on being first name on first publication of the results and interpretation of said numerous surveys... to be followed.

[Hervé]

From space today:

[crested-duck]

Amzer Zo- thanks for your continuous effort on this thread! Randles- still thinking about your situation & still in my nightly prayers. Happy Holidays!

[Hervé]

Here is the condensed/time-lapsed version of this morning's evolution of the La Restinga's plume (no idea why it's titled Dec. 19th since the Sarmiento de Gamboa can be seen on it?):

Source: https://youtube.com/watch?v=oW3G0o5Kj4M

For those of you who missed it and want to see for themselves whether the lights show on the night of the 14th of December were due to a ship or smoldering, floating lava boulders... as Geolurking put it: genuine UFOs (Unidentified Floating Objects) in any case ; here is the 2 hours long video of the event right straight out of the webcam:

Source: https://youtube.com/watch?v=Mqa6N40bKwY