Tirelessly updating Avalon on the El Hierro eruption.

[Hervé]

:cheer2: Polly!!! :cheer2:


:luv:


There she is, from screen shots of the videos released by ULPGC (http://www.ulpgc.es/index.php?pagina=noticia&ver=hierro_16032012):



Robot submarino graba el flanco suroeste del cono principal del volcán submarino (http://www.ulpgc.es/descargadirecta.php?codigo_archivo=7094656)



https://public.bay.livefilestore.com/y1p5PxxqHX7UqdRV8rKCMnkFOgf1T6J8dEvxML7o3HTiaR58rW9cpdah0Y9tII6E_pXqAz7v_T-M605TQZEoiOkPw/Image-2012-3-16-12h59mn49.jpg?psid=1


https://public.bay.livefilestore.com/y1py5QngjgEdYdAy-duLKNlDszp5z9XXy6ZKTUph94DPQuGoXTOocuFPUhHGjnUIGzxbu_JhCT5VFiN1OnIeww5_A/Image-2012-3-16-13h0mn5.jpg?psid=1


https://public.bay.livefilestore.com/y1popAZ4QAh6GmUip3GfgSU1vqrJi7Tw7xcEyR4CbwZlGaDZC2EDVao8g-JJ0U7-zLG5s2wkGLWdfUWTs6H2lWaIA/Image-2012-3-16-13h0mn53.jpg?psid=1






Filmación de un banco de peces que convive con el volcán submarino (http://www.ulpgc.es/descargadirecta.php?codigo_archivo=7094657)



https://public.bay.livefilestore.com/y1pJPPhie0H4EWWdS_FfCXI4TgIj73WQCONoEZFZesdRlPvxs_6EOh2YhjOEIcDZp_JARAWWN-rNPTDd_PrgtrBRQ/Image-2012-3-16-13h5mn2.jpg?psid=1


https://public.bay.livefilestore.com/y1pXjO0-iZDosxZE-kCi9Bzwa7Y7B44RY6U5DHbL6LmSuv7VisH0v3-9scFh2gURj3U8jjPsLq2eBBer_F79-l7Kg/Image-2012-3-16-13h5mn32.jpg?psid=1




These views, although not very impressive and probably weeded out of the "good stuff," have been hoped for ever since Ramon Margalef and its Liropus 2000 were rumored to visit the area... that's been a very long wait!


That's what all the fuss is about.

[Hervé]

Here is my translation of the ULPGC press release (http://www.ulpgc.es/index.php?pagina=noticia&ver=hierro_16032012):


ULPGC scientists prove that life has returned to the Mar de Las Calmas but the volcanic center remains active

16/03/2012

Scientists at the University of Las Palmas de Gran Canaria, aboard the research vessel chartered by the university to campaign in the Sea of Calm (El Hierro) have filmed the submarine volcanic cone by means of a submarine robot from the Atlantic Explorer vessel and was the first camera to sit atop the cone of the volcano.


http://www.ulpgc.es/hege/almacen/download/7094/7094658/barco_en_erl_hierro.jpg

Scientists say there is no tremor in the water, but you can see a "shower of glowing stars" at the mouth of the volcano, as the central volcano remains active and which surrounding water has been sampled at over 60 º C temperature. In the area, it also has been shown that marine life has come back near the volcano.

The campaign, called 2-ULPGC Guayota, involved researchers from GEOVOL (Land Group Volcanic Geology), the Division of Robotics and Computational Oceanography (IUSIANI University Institute of Intelligent Systems and Numerical Applications in Engineering) and IOCAG (Institute college of Oceanography and Global Change) - all of ULPGC - and in collaboration with the Jaume Almera Institute (CSIC) and the Oceanographic Centre of Canary (IEO).


The campaign takes place aboard the R/V Atlantic Explorer (QSTAR SLU) for the study of the underwater volcano of El Hierro and oceanographic involvement as well as observation and filming of the volcanic cone.

The results of the first images recorded are:

- For the first time, images of the new undersea volcano which appeared near La Restinga (El Hierro) have been obtained from its southwestern flank and near the crater area (to 172 m)

-Both missions have shown that the main volcanic center is still active

- Emerging from depths of about 120 m, shows the formation of convective hot jets reaching depths of about 40-60 m. At the outlet, on Tuesday the 13th, the ROV entered one of them and made ​​several turns uncontrolled, while the sensor temperature increased sharply

- Also from the same depths are generated pyroclastic projections about 40-50 m in height (ie the pyroclasts reach depths of 80-70 m), which rapidly form ballistic trajectories (parabolic) and fall under gravity. Some of these pyroclastic seem to be large (volcanic bombs type)

- The dive, during Wednesday the 14th, to film the southwest flank of the main cone, shows that it has a steep slope and is formed mainly by large pyroclastics, some of which are similar to the hollow volcanic bombs that reach the surface in the months of November and December

- Finally, at a depth of about 170m and under a rain of ash, a school of fish (amberjack possibly) living near the edge of the volcano. Also, confused with the ashes, is observed many small bodies and, closer to the surface, jellyfish.



The University of Las Palmas de Gran Canaria chartered a boat to facilitate scientific research in the sea of ​​Restinga (El Hierro), in the area of the submarine volcano.

The Vice President for Research, Development and Innovation ULPGC, directed by Fernando Real, has coordinated the rental, from the QStar company, of the vessel Atlantic Explorer, which will perform 7 research cruises in three and a half months, from February 17 . The investigations are conducted by scientists from the Departments of Biology, Physics and Chemistry of the University Institutes of Oceanography and Global Change (IOCAG), Intelligent Systems and Numerical Applications in Engineering (SIANI) and Animal Health (IUSA), the Spanish Bank of Algae and research groups in Biological Oceanography, Physics and Satellite, Marine Chemistry, Robotics, Marine Ecology and Fisheries and geology, among others.

[avid]

Let's hope it all stays calm for a long long time! Thanks Amzer for your continuous monitoring - this thread is so important as it imparts calm where there was none before. A positive thread indeed!
Avid

[Hervé]

This is what I meant by the "Harmonic Tremor getting fluffier" in post # 1997 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=449371&viewfull=1#post449371):


https://public.bay.livefilestore.com/y1phBG5sw7TXSa88MmKF2DA2ilI9YhHMsOiuH2alFjMp0NAKT2_PZ8xtFtn5sH3yX39BH1WW8-nsI_cnwmgxB9GzA/Panorama-10.jpg?psid=1



The traces on the seismograms do not show much variations but the harmonic Tremor frequencies are beginning to fill up the space again, although the 0.59Hz strip of red intensity is still absent.


Now, thanks to "Wall-E", what I have suspected for quite a while -- that there is no direct correlation between Harmonic Tremor and the emission/ejection of volcanic materials per se (see post # 1915 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=423794&viewfull=1#post423794) and post # 1922 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=426322&viewfull=1#post426322)) -- has been confirmed!


That, BTW, implies the circulation of magmatic material on its way to ejection... yet, that motion is not evidenced by a signature in the Harmonic Tremor either.


That simply means that all the high priests from the scientific community who derived their conclusion of the end of the volcanic activity at La Restinga from the look of the Harmonic Tremor flat line are going to have to find another credo.

[Hervé]

Meanwhile, it seems some people have been successful in the lobbying "coulisses."


Repsol authorised to search for oil off Canaries shores (http://www.canariesnews.com/2012/03/16/repsol-authorised-to-search-for-oil-off-canaries-shores/)

Posted by Canaries News on March 16th, 2012
http://www.canariesnews.com/wp-content/uploads/2012/03/offshore-300x168.jpg
(Archive image)


A Council of Ministers has today (Friday, 16th March 2012) authorised the company Repsol to make ‘spot checks’ in Canary Island waters to search for hydrocarbons (oil and gas). A spokesperson for the Ministry of Industry, Energy and Tourism confirmed that Jose Manuel Soria agreed to the authorisations.

The surveys will be conducted over nine ‘grids’ in waters to the east of the islands of Lanzarote and Fuerteventura. The authorisation has been rejected by the Regional Executive and the councils of both islands.

Surveys carried out show that about forty miles from the coast the Canary Islands, near the maritime border with Morocco, there are significant deposits in the neighboring country where exploration work has already begun.

José Manuel Soria has stressed the desirability of exploring these sites, which serve to reduce energy dependence on Spain and to provide the Canary Islands with ‘additional financial resources’.

Mr. Soria said the government “will not look the other way when opportunities are identified to reduce energy dependence” and “encourage the work of prospecting oil and gas” in Spain. In addition, he claims to have received information from Repsol that in the waters of the Canary Islands there is a “high probability” of finding oil “in quantity”.


See Posts #1507 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=354669&viewfull=1#post354669), 1728 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=370398&viewfull=1#post370398) and 1791 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=378931&viewfull=1#post378931)

There you have it: energy independence is not looked in the direction El Hierro is handling it... never mind "Free Energy"... no, it's computed in the direction of "more oil!"

[Hervé]

Whaooowww... what a day!

From Polly's first pictures to...


***


Thank you to the more than 100,000 viewers who support this thread!


Since July, IGN has officially logged 12,534 tremors at El Hierro... and still counting since the seismic activity is still on going!


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]

Strongest so far (2.5 at 13:38):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-17_13-14.jpg


For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-17.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_2012-03-17_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 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, 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_2012.jpg



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

[Hervé]

Dust haze from the Sahara -- La Calima -- is still enveloping the islands:


https://public.bay.livefilestore.com/y1pr24BsgTAoeExVuZnZ06J3xphK4efekOwuHgITQWcsBjgk_IRFz1IYCR2HmQ183g2AkXLIgIdS2Kq67OsnGC4rA/Image-2012-3-16-9h39mn3.jpg?psid=1

[Hervé]

Another day of Rock-'n-Rolling around the top of a live volcano for the Atlantic Explorer and her crew:


https://public.bay.livefilestore.com/y1p2ykPTCyLB3w29UGuBbBnZHuwNTyBD0_KpZIWGCLB4buTfbU44av-C-1Zo2OuWYLUhUbsxnu2u9sEGJsXR5o5xw/Image-2012-3-17-6h10mn24.jpg?psid=1


https://public.bay.livefilestore.com/y1pBruJJVUMCdJbVrUNMccMT4_nC7SjrAVE2X4DLsm5iYh-k3GgExdJebtUNBQaxm2fedJNs3ddE3vMd9VhZaI4lQ/Image-2012-3-17-6h11mn51.jpg?psid=1


https://public.bay.livefilestore.com/y1p7cWhXFF3VKWC5446H6-P_Z1BOIUVRJgkfozTt95ZN2Sy8FQFIcitn9UKEO1TP4ZyRp1qDqHv7hnpQF2H6s1XiQ/Image-2012-3-17-6h12mn35.jpg?psid=1

[Hervé]

Well, I guess the webcam operators have the weekend off or else they've gone off the ball and gone out to lunch/fiesta... 'cause it was busy at La Restinga today:


Atlantic Explorer back to port...


https://public.bay.livefilestore.com/y1pnAOIVJTXtVPdDJUlwcCh2toW_MDIZrhUQVq1NcOP5KiAnZF_Ngr9_RR8GRzacn9JYFURL2vU3RzPgLwa7asnzA/Image-2012-3-17-10h51mn22.jpg?psid=1



Tall ship circling around the harbor entrance...


https://public.bay.livefilestore.com/y1psAz8RMuZCUY_5jRWUp7zpau18eGL7nLzWyyYMggGQX2B8Y07ovTBqmXwYThycAkjzEZAwmM5eZVhz2asrEvJIQ/Image-2012-3-17-10h59mn49.jpg?psid=1



... bopping like a cork...


https://public.bay.livefilestore.com/y1p681FzXg4S3dny9sMfUbIX4s2opFCovHbdzZCkMCqb7ZndlsqjVXtLXV7CwOlf7xi49dgy4-uYVvH2wCeLXugrg/Image-2012-3-17-11h6mn21.jpg?psid=1


https://public.bay.livefilestore.com/y1phbwHcoXJhzXecU-ORckVPBLSBnPSyJxLwqvbmg0K33i6TsJEGzD_04yCJIF2DrzM2j7dnbKPvHlu2RhyEkPsHw/Image-2012-3-17-11h6mn42.jpg?psid=1



... till permission to dock granted...


https://public.bay.livefilestore.com/y1pHcY-iBvkNW1ZIW7QyvsPFt6FbC7abKhBRdCtQ977JIo2lINNh6esoEnCUZgUfXVvEWlV-X-1RGiAzef-cLV6JQ/Image-2012-3-17-11h8mn44.jpg?psid=1


The name is "Aelva":


https://public.bay.livefilestore.com/y1ppM-CcrvIAsliUB-zKrEVA4HhYYBYzJZ_e5naPqWr8gcgKtqYYyCMkkkxlo0B6hv3ajeVqailRfUgZFeTLXHlxA/Image_00712.jpg?psid=1



Then, Atlantic Explorer went back out for more Rock 'n Rolling...


... I guess the M. 2.5 W of La Restinga (SW El Pinar) shook her and her crew into going back out...


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1133145.gif

[Hervé]

IGN posted GPS data (see post # 1997 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=449371&viewfull=1#post449371))... now, I am calling it deliberate obfuscation!

See, this is what I would call a "useful" display of GPS data; from an Iceland university via volcanocafe.wordpress.com (http://volcanocafe.wordpress.com/2012/03/16/sheepy-dalek-name-that-lava-ii/):


http://strokkur.raunvis.hi.is/~sigrun/GOLA_11.png





Compared to this useless piece of colorful $><!t from IGN's GPS data page (http://www.ign.es/ign/resources/volcanologia/html/deformacion.html):


https://public.bay.livefilestore.com/y1phCuXYTwihcchAeqDCOIWJ_md5lQMOMi-psuBaDElMH1b_cgulqVR0QuxKDRLvRvZ_Ar7kr-EAhZDPbrBwkBzig/Image-2012-3-17-17h19mn57.jpg?psid=1





Hope the difference is crystal clear to anyone?


Utterly sad and pitiful!

[Hervé]

And now, the goodies on Polly from the ROV cameras (from a PDF (http://www.avcan.org/varios/ROV.pdf) received by AVCan Fernando (http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446)):



ROV tumbling around:
https://public.bay.livefilestore.com/y1pcBUIev_edX3g1pkRFf4cZMjgbFDtEsVcGO5epa52Elk3iLilESzftYQSJm97UviPCSmDoT1PUSLrWkjMB2rIqg/Image-2012-3-17-18h33mn35.jpg?psid=1




2a. - Scoria and incandescent pyroclastic material (80 m) in upward trajectory. Cone to N (compass) (13 Mar 12).
https://public.bay.livefilestore.com/y1pkTwpYao-EzSGwbEVmUKVUUbCASUeKIDbK2AZAz9FhTwiPYo8zZF7rtpA7Uo8NsqRnbrJZ1F3WuIUS9uQEjb0NQ/Image-2012-3-17-18h34mn2.jpg?psid=1





2b. - Scoria and incandescent pyroclastic material (70 m) in ascendancy. (14 Mar 12).



https://public.bay.livefilestore.com/y1pU7C6tML1rzuL7w1r4M5tA-Sd_LIy4lwFZZSnlJ3j7_BHFWmD78R7U_ec2jj6yWQIse7CEXMiTZotLECP8nm-kw/Image-2012-3-17-18h34mn25.jpg?psid=1




3. - Landing on the SW slope of the crater at a depth of 180 m.
https://public.bay.livefilestore.com/y1ph5h0p1fib-QWuyUwe3GR-UojdKh8Hiq8tnqUmFnJqPifDyPdtkQ4cy1KtOqNTE4Ora8qRcpjzWcOWke_-EakMA/Image-2012-3-17-18h34mn51.jpg?psid=1





4. - Jellyfish and Amberjacks.
https://public.bay.livefilestore.com/y1pfktYBuSssFp43HaH8Ct2GdQ14MMaBG2GHPmokdLp9rwiccvi5DUFe9fVecGc241-VqAXuaxqHGUiz3idQT7SGg/Image-2012-3-17-18h35mn7.jpg?psid=1

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-18_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-18.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_2012-03-18_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.



See top of page for the other auto-updating diagrams

[Daughter of Time]

Congratulations on your 100,000 views!
Thank you Amzer, for your tireless dedication in keeping us informed.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-19_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-19.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_2012-03-19_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.



See top of page for the other auto-updating diagrams

[Hervé]

Aaaaahhhhh... memory, logic, rationality, ripe fruits of observations... where have you gone? Things of the past? Not to be appealed to?

Why am I asking the above?

Because of this:




[...] The variation in HT signal is often caused by changes in tide, wind, waves etc, external factors which have nothing linked to the eruption. However, a minimal HT is still present.

[....]

... from Earthquake-report.com...

See, the quoted excerpt above, in general, is true (see post # 1202 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=343469&viewfull=1#post343469)).

However, in the case of the CHIE station which is tweaked so as to not even jitter from a 6.7 quake in Siberia or a 6.9 quake in Japan (see posts # 1955 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=436551&viewfull=1#post436551) and 1991 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=448519&viewfull=1#post448519))...

...I'll let you gather the fruits of your own observations...

As far as I am concerned, it seems that ER is aligning with the official scientific authorities party credo of "over and done with the damn thing!"

[Hervé]

Not much happening today on the webcams besides some shots of "Aelva":



https://public.bay.livefilestore.com/y1pWfq4F6AfQ1aqqyoup963yomN_25r2hcjww3F4bmWblVWbicBKFnjkIl8hVg_XHBet3ruHN5bKs9sVtSxFknXDA/Image-2012-3-19-16h40mn36.jpg?psid=1




... to the extent that the panoramic webcam went into snooze mode and, nodding off, gave us a view of her little sister; the "eruption zone" one:


https://public.bay.livefilestore.com/y1pBOTSaYZI6gde843Viux8wTMnnNiCfnpvPLBtg5lsBHODfecF4FafOdJJGQLYCQpLCEvyYxlY2PLiSZnuDVHQgg/Image-2012-3-19-16h39mn33.jpg?psid=1


https://public.bay.livefilestore.com/y1plHCX_go1CpsZ1Fw4rY1GsBZWXvBz10SD2RayT9bah1GeI7BQomWHWXhqGar9RHdztLWQhKhGcm4QJPR926viCw/Image-2012-3-19-16h39mn33a.jpg?psid=1

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-20_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-20.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_2012-03-20_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.



See top of page for the other auto-updating diagrams

[Hervé]

The mystery vessel sailing over the restricted eruption area...


https://public.bay.livefilestore.com/y1pYsMGYWML_FtwsaHQTXR0c2oBEjRgYCgnoAmsUxfbR2e-l4ftQ9_-hWpe84RVKg-qjvM1LCecBbqWyhPo2DMX1Q/Image-2012-3-20-13h29mn55.jpg?psid=1


https://public.bay.livefilestore.com/y1p-P8xTl1ylIpkW9wOqZPWzZlPHqEmJlf6GGhzmg0H0cSeAtOUgkpWDFyNSttcJIMellx8bQd8HWQibsTcAnq9ZA/Image-2012-3-20-13h30mn38.jpg?psid=1


https://public.bay.livefilestore.com/y1paQizzVhQDY6RqUsYpso9RyCJThd12lLWMpPj_lDDNh255nCYmlQLRgPV578mxwkeNEEhtYvRZ7DwKCT3txcJlA/Image-2012-3-20-13h32mn4.jpg?psid=1



... belongs to the Spanish Customs Agency (Aduanas) and scheduled to survey the area in alternation with Coast Guard (Guardia civil), Maritime Rescue (Salvamento) and Navy (Armada) vessels as published way back:




Marzo:
o Semana del 5 al 11 = Salvamento Marítimo
o Semana del 12 al 18 = Patrullera de la Guardia Civil
o Semana del 19 al 25 = Aduanas
o Semana del 26 al 1 = Armada


Abril:
o Semana del 2 al 11 = Patrullera de la Guardia Civil
o Semana del 12 al 20 = Armada
o Semana del 21 al 28 = Aduanas


Mayo:
o Semana del 1 al 10 = Armada
o Semana del 11 al 21 = Salvamento Marítimo
o Semana del 22 al 31 = Patrullera de la Guardia Civil

[Hervé]

That thingy at 18:14 is the recording of the M.7.4 earthquake in Mexico:


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-20_18-19.jpg




That same earthquake at La Gomera station:

http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/HORA/EGOM_2012-03-20_18-19.jpg



http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-03-20.jpg



That's quite a biggy but thankfully the epicenter was far enough away from Mexico City... Igualapa, almost at the epicentre, got the most damages with over 800 houses severely damaged in the larger area... no casualties reported yet.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-21_00-01.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-21.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_2012-03-21_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 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, 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_2012.jpg



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

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-22_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-22.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_2012-03-22_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.



See top of page for the other auto-updating diagrams

[Hervé]

New video from Qstar-SOS Oceanos posted on their site with the accompanying text that's translated in post #2002 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=449872&viewfull=1#post449872) showing the goodies from ROV "Wall-E"'s dives:



1E1TScfluNs



QSTARslu comment:

In the 2nd attempt [we] almost lost out Wall-E .. because the visibility was very poor, with strong currents and we could barely control the vehicle.

QSTARslu 1 hour ago

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-23_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-23.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_2012-03-23_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.



See top of page for the other auto-updating diagrams

[Hervé]

While the Harmonic Tremor is "defluffing" like a sparrow after a dust bath, a new stain spot was observed by Joke Volta yesterday morning as reported on Earthquake-report.com and a Jacuzzi could be distinguished for a while in spite of poor "Calima" visibility compounded by pixellation following constant refocus of the webcam autofocus:


https://public.bay.livefilestore.com/y1pPFVfgwn_Q7VRhPXczJ4eNV5h7xdf7Vxps5Gbu-BPTxMXwlj7o7gu6ChS6ZNjjXGuil7bfyZEzBFzUeSBHKag0w/Image-2012-3-22-20h37mn38.jpg?psid=1


https://public.bay.livefilestore.com/y1pb1wtTOhC7wlMsIpCWNyzihAkttn80i8hrMv9gwuqF0E5akek-_hmfkkkcpe7XCfs3BVHOBTI3EBRFrjkhXHJRA/Image-2012-3-22-20h37mn38a.jpg?psid=1

[Hervé]

I missed Polly's bubble bath of this morning:

http://tenerife.todogeologia.com/download/file.php?id=1227



Screen capture from CalidoT at Todogeologia.com (http://tenerife.todogeologia.com/viewtopic.php?f=1&t=1824&start=30)

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/5555(54).jpg&Width=360&Height=189,642857142857&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0

SOCIETY - 23/03/2012 (17:48 pm)

Public Health confirms that the beach at La Restinga is suitable for swimming

DIARIOELHIERRO.ES, writing (23.03.2012. 14:17 pm)
The City of El Pinar de El Hierro said today that the area of the The Calmas Sea'' is optimal for swimming.'' So says the Consistory in a statement after requesting a report on the waters of La Restinga.

As explained by the Consistory in a statement, "this initiative is the gap in the recommendation of Pevolca advising not swimming.''

According to the City, "the report of the Inspectorate of Public Health concluded that drinking water supplies for the population in the municipality of El Pinar are ''suitable for consumption,'' as swimming areas of the municipality are'' suitable for swimming, without establishing any health recommendation," he says.

Therefore, the mayor of the municipality, Juan Miguel Padrón Brito said that "we have taken a step in order to recover and implement the arrival of tourists to our town, especially considering we are at the gates of Holy Week ".

[sandy]

Hi Amzer Zo,

I have to commend you on staying on top of this eruption!! Do you think it is going to be like the one in Hawaii that is basically non stop active?? Just wondering as it certainly doesn't seem like it is going to stop bubbling anytime soon :)

[Hervé]

Hi Amzer Zo,

I have to commend you on staying on top of this eruption!! Do you think it is going to be like the one in Hawaii that is basically non stop active?? Just wondering as it certainly doesn't seem like it is going to stop bubbling anytime soon :)

Hi sandy and thanks for the commend!

The Hawaii model would be my best bet in the matter since both are the results of hot spots/mantle plumes, whereas Iceland sits on a MOR (Mid Ocean Ridge, Atlantic one in that case).

[Hervé]

Today, the panoramic webcam, in great need of a serious dusting, gave us a tour of its backyard:


https://public.bay.livefilestore.com/y1pl9psqx3GOwPT7_6xE_8dIwyvYaFWWcTvGh_LLlM8xw2QBzme7TURPS7IpX2R0cU9rpaw5k9pY4JlosslesOFaA/Image-2012-3-23-14h15mn10.jpg?psid=1


https://public.bay.livefilestore.com/y1pRToP5wV_g7hOdkHJDtnwi50b-9tzOoM1ko6VMWvdSuAIVNNJptHkCXQYE8r2HmsoWbIBelgiyR_6NyjwSwahHw/Image-2012-3-23-14h15mn26.jpg?psid=1


https://public.bay.livefilestore.com/y1pLTYIqnaqMykD-OMn-lGCY5o18A60XKnXPjvnJHf64XlYbW2O4HPvAyjIZ_AcpuH53DRJk3GXDt7ZnMKy_wxjEw/Image-2012-3-23-14h15mn51.jpg?psid=1



... including an overview of the "Eruption Zone" webcam:

https://public.bay.livefilestore.com/y1pkP7SwCFF7ojp3VvdTEw3hQ9hfWFj_1vSiE2XO7SZaS6WNTOSnafLyhI4kLRKdB4MralBjvELVBzmk71ZPRDwrA/Image-2012-3-23-14h17mn56.jpg?psid=1


https://public.bay.livefilestore.com/y1pHEUUKZrPPjvDGJ_ws4F2mMZoYgiiSfRmoN-PzExHuHhnSMaJH57GntWUaMigTZ3XHKeXUJlkENZVNgVyDvvA6g/Image-2012-3-23-14h17mn56a.jpg?psid=1



... and the emergency generator in case of power failures:

https://public.bay.livefilestore.com/y1pcZNoL-5g2SLT2giYgIRD4IEw5_aBLSctRvZU7VhJK4J0Ti3lTyvHOIj4FF16z94hH-KKmU3t0s7t7kYUVLqZrQ/Image-2012-3-23-14h19mn42.jpg?psid=1



... to the retransmission box:

https://public.bay.livefilestore.com/y1pnDZzJjzGzeKxWWhRp707f8juGPrJQJNbRKUUAPMDp5bbYqc2DXPz9knpeiTGeR817osZyL7_275libJnXsWClg/Image-2012-3-23-14h21mn13.jpg?psid=1




... to this one:

https://public.bay.livefilestore.com/y1p5DqYb1DH2_jnUk6z4yMiCcsIlOVoz7WLsE68qeJCX4uekFeslUSQrdUrsJ4eMWJM3i2gctSNSxVXh7CJVg4TTg/Image-2012-3-23-14h23mn26.jpg?psid=1






Whose webcam is it?

[Hervé]

Timelapse video of this morning's Jacuzzi:


vR9kmmapVA0

[Hervé]

Strongest so far (1.8 at 16:56):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-24_16-17.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-24.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_2012-03-24_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.



See top of page for the other auto-updating diagrams

[Hervé]

Polly's Jacuzzi has been in operation most of the morning, subsiding now:


https://public.bay.livefilestore.com/y1p_aCkcIdGEUyAoqB6sI_DFtKODRDlTR3x70-lbMGOab5_spNt9Ykus3kR4A9aA8MTcMa8P4MxQSbHOOBfoMCYnw/Image-2012-3-24-10h53mn49.jpg?psid=1


https://public.bay.livefilestore.com/y1p1Kc0ymukMhXTpvAXrzYNtlCxcCBYo30D3H_QxCRv7PgUGypHgF8OT1x9kXfUIwviDkn_KpEMsIpEdilQ6ngpMA/Image-2012-3-24-10h54mn32.jpg?psid=1


https://public.bay.livefilestore.com/y1p2s7_BvyslAZiQNYRDofJ1ms1aJsspQ0ri7W6nsY-WV7UhaIvIcqHtfwarQuzvYfoHf9OUnOu186oOYgAd-e1GA/Image-2012-3-24-10h54mn57.jpg?psid=1


https://public.bay.livefilestore.com/y1pQ8ulirMdlpk_8cvMUgbwM8Mlm-RZLYLs4gFqDFkBMGwEtiJGY7hy83V4gj21fboOM1Y4-CZIloxKrOjub04k-Q/Image-2012-3-24-10h57mn30.jpg?psid=1


https://public.bay.livefilestore.com/y1pJ4dNplbgdamn8h-LhV54ITZAyPVsaF83F7zsiG9mkl8-IivK8FgjYy-dp0LqHTO-TNlDDXgfAZa1OhNJmEzvMQ/Image-2012-3-24-10h58mn29.jpg?psid=1


https://public.bay.livefilestore.com/y1pM565krTetKpNeEml94UmzWP3ddzf4vHIqis3d8fG19iujxlsywxwdWsv07Ud7LI82fWq2eG09h4Lv-QuJwYXBg/Image-2012-3-24-10h59mn52.jpg?psid=1

[Hervé]

Jacuzzi resurgence in the evening:


https://public.bay.livefilestore.com/y1pid_SUNA_Sa1OAoFbdR5nZFpogox3Qu6dEAuCMu3rfA9F9Vkg-5_CKj8m6gdPBWXVKqp0CE38Ax4-TKToCdoWFA/Image-2012-3-24-16h37mn29.jpg?psid=1


https://public.bay.livefilestore.com/y1pTAN39voPBgQvnmdUe9UAIgCFFos4nGU3bszRQrDZrMQPq3V-aU381js51IsTlEozpR58TD_ZYVQAYlVTlrjUzQ/Image-2012-3-24-16h39mn27.jpg?psid=1


https://public.bay.livefilestore.com/y1p_nb_a4eXO_uaqAqlt6INWPIym0ETxfev8AIoLgddjn2PaRAnBOdZ47plldNUX3KmTxMvMA70yKBVzp9XvXgFdw/Image-2012-3-24-16h40mn3.jpg?psid=1


https://public.bay.livefilestore.com/y1p3BEIZIAcmisVJzSVlaZjdZKaDWFtbyyjrImpT40aUZnlwsVwfZvArsGgA53hwNwK347QJApVewG6ANuIWwjNQQ/Image-2012-3-24-16h41mn38.jpg?psid=1


https://public.bay.livefilestore.com/y1pteb17ZWgIL19vNsePqsB47THJdu_9gIIg7X78e6U_Hhpx0LW6zOSheeU6k_YWzfapy_rXESuFBwsUBOVCrDRSA/Image-2012-3-24-16h41mn56.jpg?psid=1


https://public.bay.livefilestore.com/y1poSo7I8hAPdNCSGwtnGsrg7CbpIlcwd9JfPsAwUC_XLTsFjv_chW0SlolavAgUsp_j0DJWcjP7tHJ_dF8JFnnTw/Image-2012-3-24-16h43mn42.jpg?psid=1


https://public.bay.livefilestore.com/y1p-lOKYfkZq-ecxuWOwF1Qmobw9JZMxNRa2CJcqs-_q8JuOyQFwnGB2q_3eSHVMzey_4ZkX_K-QxwP1WJUAw45mg/Image-2012-3-24-16h44mn30.jpg?psid=1


https://public.bay.livefilestore.com/y1pf2qBzdFa1PgJDwUT0IQ-YrrnQG35BOkpgwBcu-o1IFl2kEzkT0pOlutg_a6iSBQdyGufmqvA7h3uzSoovjl_yA/Image-2012-3-24-16h45mn4.jpg?psid=1


https://public.bay.livefilestore.com/y1p_3WFqXvuPs0ZhPQQQ6T-xNA7TJd1rCRBhCpsmnDnrpeFhCWakCDTpg35NUxVYGiLA_6zI3bW2JPd8w262Z-LLQ/Image-2012-3-24-16h45mn39.jpg?psid=1

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-25_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-25.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_2012-03-25_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.



See top of page for the other auto-updating diagrams

[Hervé]

Jacuzzi picking up in strength by the evening:



https://public.bay.livefilestore.com/y1pGBfbBXmogBbxXzTAA_enaFqhxl3rM5vOE-8sWoWeg0peTLU2S9a_eLhFOXpS1E70ep_60tg-jwrxoB0a0q0sUg/Image-2012-3-25-16h40mn56.jpg?psid=1


https://public.bay.livefilestore.com/y1pJ14V43egiZgnvmV93nn5sJB3vp6GcgiF7M_nt9HMoFqiHb0zulMfW_5jvVHwA_ozMHiyUfxalyHryiIB9aVwfA/Image-2012-3-25-16h43mn8.jpg?psid=1


https://public.bay.livefilestore.com/y1pECVj8yP5uH0WOA9gWQjeCFyFUBmnA2GxfkDhrT3eZuKEwd_mdw0ZrKbzfSsrVoiLORUhLHmluZDmxmhifxujWw/Image-2012-3-25-16h44mn8.jpg?psid=1


https://public.bay.livefilestore.com/y1pM9O8eyfm8e9-aj_LoGCQNRyxMEklFbH8yykJYsrImMJDiZsvWdibj-lJE-t4pujE8J8zib-0VoHE1QYMhLFyCg/Image-2012-3-25-16h45mn51.jpg?psid=1


https://public.bay.livefilestore.com/y1pTNvryJcSlczFIW5Hh8K0oibXSvWY0BZRj1ZdP985go1be6i8GE9ivfeEOfRhcgTOv7O6CpHSNJIkVhf0FuEN0w/Image-2012-3-25-16h46mn43.jpg?psid=1


https://public.bay.livefilestore.com/y1pqkUdLRWzrVizi_BtBcO51WQil0D-PgVQAXTTlp-r3ppSfcilJhjB_JRGl6GMreL9lvxYmAW5g-SQZQcXKGiHRQ/Image-2012-3-25-16h47mn27.jpg?psid=1


https://public.bay.livefilestore.com/y1pyi_AIVRJUWZXmuZeypnuTcQynltpUrgPMotf4mZQWCfHLGWJVmvrCyzl8TKUCsgpuK8q00kdw_efzDiuspWxGg/Image-2012-3-25-16h48mn38.jpg?psid=1


https://public.bay.livefilestore.com/y1pqWDjlx8VmhgSXBXdGQo8WalJsY_KGMPe1vnboLV9D-G2O7vas6GvrlioMTamYDirAaGjsMszFKgdLpBietYbDw/Image-2012-3-25-16h49mn22.jpg?psid=1

[avid]

all sorts of strange goings-on ricocheting across Europe at the moment, http://quakes.globalincidentmap.com/, an almost horizontal 'display'. Thanks for all your updates AmzerZo :-)

The 'drumbeats' of El Hierro!
w3obRoIBxr4
Lots of wee 'insects' lulling us to sleep....
Nitey night! x

[Hervé]

all sorts of strange goings-on ricocheting across Europe at the moment, http://quakes.globalincidentmap.com/, an almost horizontal 'display'. Thanks for all your updates AmzerZo :-)

The 'drumbeats' of El Hierro!
w3obRoIBxr4
Lots of wee 'insects' lulling us to sleep....
Nitey night! x

Thanks for the summery sound...

Actually, these "drumbeats" were a mix of the Sarmiento de Gamboa airguns blasts (for its sismic surveys) and hydromagmatic bursts (see post # 1695 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=366319&viewfull=1#post366319) and compare with video upload date).

[Hervé]

Well, it seems like most stations have been off line since 9 pm yesterday... no idea when they'll resume?

Accordingly, no idea either on how the Maule, Chile 7.2 EQ looks like on the La Gomera seismogram.



Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-26_01-02.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-26.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_2012-03-26_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.



See top of page for the other auto-updating diagrams

[Hervé]

M 7.1 in Maule, Chile arrived at La Gomera station, daily seismogram:


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-03-25.jpg




At the El Hierro CHIE station, hourly seismogram:


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-25_22-23.jpg

[Hervé]

***


:jaw:
:frusty::moil:



https://public.bay.livefilestore.com/y1py5Kl-YZRHN55eDb5YUhjMObSDrBteMGDgFVPBQVPlIkKSsP2cLN-NO-xWDfKWQmTIitMvElfbtS6alX3UedyAQ/Image-2012-3-26-10h45mn25.jpg?psid=1


:rant::rant::rant:


φ Œ < |< ! N G ____ *^*T^RDS !




That's all I've got to say!

[Hervé]

The Webscams Story...

Thanks to Joke Volta and the following original (annotations, mine) picture posted on Earthquake-Report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/) we can see that there are almost as many webcams on these masts than there are telecom stuffs:


https://public.bay.livefilestore.com/y1pEjPsC_sjKV4L8ZLPS_z2vn4-1BSMGd1antZOc0ECFl33kC45WtchG4vRjNfL19FrINJGtPfcHGx6AnybvWmDXQ/Image-2012-3-26-12h8mn16c.jpg?psid=1



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





Update 26/03 -16:21 UTC
- Joke just returned from a conversation with the mayor of El Pinar. The mayor said that the Cabildo still has his web package (including webcams) operational at www.elhierroendirecto.com (http://www.elhierroendirecto.com).


He has NOT said that the broadcast will stop immediately. So, what we assume now is that Telefonica has stopped his servers and that the Cabildo will continue to capture the signal and broadcast it via the above website. Of course this would be perfect, but so far nobody has confirmed this (the Mayor is NOT the Cabildo and the text on the joint Telefonica / Cabildo website is not really hopeful, to say the least !)


[...]


- All official instances are telling everybody that the eruption has stopped. Everybody who sees the regular jacuzzi’s the last couple of days has a hard time to believe that they are not seeing anything. It may have been wiser from IGN, CAP and authorities to give some official explanation about what is going on with the degassing, eventual minimal lava outflow and the remaining HT signal.



- When Joke asked the mayor about sulfur smell during the Atlantic Explorer ROV expedition (March 14), the mayor said that the crew had not smelled anything. Joke will ask once more at SOS Oceanos if the initial report they gave her was wrong.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-27_01-02.jpg



For the day:
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-27.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_2012-03-27_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 is El Hierro looking like, now:
(apparently, these have gone off-line as well)



https://public.bay.livefilestore.com/y1ppqBdgM7U98XhMuug88Ni3ee25U3Kls7QN1cWiyNqe1UDjEBcOMOEeMucZZZhrB8EAHUif9GR-k4IkV87bXuKXw/Image-2012-3-28-12h43mn27.jpg?psid=1
(Click on picture to go to the webcam page... with no webcam connections)



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:


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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

El Hierro: The 999 Volcanoes Island... since the last one disappeared out of sight due to sheer political will.

[Hervé]

"D-d-d-dza-dzat's all folks!"


Transmission's end.


https://public.bay.livefilestore.com/y1pE9w7nxbxNBiygE3B_0w-bgtokFStTY0FJRFel6iUUWXULVDo-qUaZLGHk53nMOoFqyxgJzI2rfOWJqqcRK7WZw/Image-2012-3-27-12h40mn43.jpg?psid=1

[Hervé]

... must be because that 1000th volcano attracted too many tourists:

From Canariesnews.com (http://www.canariesnews.com/2012/03/22/canary-islands-report-5-2-increase-in-tourism/):

Canary Islands report 5.2% increase in tourism

Posted by Canaries News on March 22nd, 2012

http://www.canariesnews.com/wp-content/uploads/2011/11/Tourists-spend-Money-300x165.jpg

The Canary Islands have received in the first two months of this year (2012) more than 1.8 million foreign tourists, representing an increase of 5.2% over the same period last year (2011), according to a survey carried out by (Frontur) which was released today by the Ministry of Industry, Energy and Tourism.

In February the increase was 2.4%, mainly due to an increase in arrivals from Germany, while UK arrivals fell slightly.

Spain received in the first two months of the year, a total of 5.58 million international tourists, representing a 2.7% increase over the same period in 2011.

The main markets remain the UK, Germany and France, although the biggest increase in percentage terms corresponds to the Netherlands, with an increase of 24.2%.

Last month (February 2012), the largest increases were recorded in tourist arrivals from Netherlands (+10%) and Portugal (+4.1%).

Arrivals by air increased by 3.6% this year, still the choice for 82.8% of visitors who came to Spain, while passengers chosing to drive decreased by 1%.

[Hervé]

Strongest so far (1.7 at 19:05:59):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-28_19-20.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-28.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_2012-03-28_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/555555(4).JPG&Width=635&Height=259,183673469388&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Image of the new spot which appeared in the eruption area

SEISMIC CRISIS SPECIAL - 28/03/2012 (15:54 pm)
THERE IS NO NOTABLE DATA RECORDED BY THE SURVEILLANCE SYSTEM

A patch of greenish color in the eruption area.

DIARIOELHIERRO.ES (http://www.diarioelhierro.com/), writing (28.03.2012. 15:54 pm)
A greenish stain has appeared today at the eruptive center of the Sea of calms, as confirmed by the National Geographic Institute (IGN).

IGN technicians explain that this coloration is probably due to degassing in the volcanic system, which can be extended in time.

The Canary Islands government says that "there is no notable data recorded by the volcano monitoring system which the IGN keeps fully operational on the island."

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

Any respect I had left for IGN just went overboard in a short jet stream... tainted tall tales that severed all ties with genuine science or trusting their flying by instruments skills refusing to look at that fast approaching mountain slope...

See post # 2004 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=449991&viewfull=1#post449991) for a different analysis of the data.

[avid]

Politics politics - deliberate ostrich-heads over-riding science. Amzer - you've 'unearthed' so much, especially the real science and the cover-ups, the stupid tourism arguments, but the most important is the corroboration of facts, both seismographically, but also with the liaison of those literally 'on-the-ground' - Joke Volta, her total commitment, et al...
Can't thank you enough :-)

[Hervé]

Polly must be facing palm thinking of IGN...

... that pesky little M-1.7 earthquake at 19:05:59 occurred 18 Km deep here:


http://www.02.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1135588.gif




Then, the squiggly little thing at 19:24 (same hourly graph above) was a 1.9 that burst 29 Km deep here:


http://www.02.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1135590.gif

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-29_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-29.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_2012-03-29_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/5555(49)(1).jpg&Width=451&Height=258&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
ECONOMY - 29/03/2012 (08:00 am)
According to the ISTAC 384 people were housed in apartments of El Hierro in February


DIARIOELHIERRO.ES, writing (29.03.2012. 08:00 am)
A total of 384 people were housed in apartments on the island of El Hierro during the month of February, 70 more than the same period of 2011, (where 314 sojourned), according to the latest survey of tourist accommodation in apartments prepared by the Canarian Institute of Statistics (LBS), gathered by DIARIO EL HIERRO.

Also, the same source points that, during the month of February, the average stay in El Hierro apartments stood at 4.8 days, compared to 3.5 days recorded for the same month last year. Also, the occupancy rate rose in February this year and stood at 13.0 percent, compared to 8.4 obtained in the same month of 2011, ie 4.6 percent more, according to data gathered by ISTAC for DIARIO EL HIERRO.

OVERNIGHT

During last February overnight stays in holiday apartments on the island of El Hierro reached 1,828 compared to 1,096 obtained in the same month in 2011, shows the survey conducted by the ISTAC.

Of all the people staying in El Hierro holiday apartments in February, 375 of them were of Spanish nationality and 9 from Germany, according to data collected by ISTAC for DIARIO EL HIERRO.


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

So, to summarize, there were more of these pesky tourists disturbing the peace of the island but they were prevented from fishing, diving, sailing, etc., due to some traffic light crazy-glued stuck on red or yellow....

Me think DIARIO EL HIERRO is doing a good job at shining some light on the real culprits by bringing forth some truths.

[Hervé]

Quickest plumbing, ever, of Polly's ascension to surface by Spanish Armada's "Hesperides":


https://public.bay.livefilestore.com/y1prvJnqFSeQA9WGRyk5HUPLnpjLKFD8lcs-Y0iTtQvzi9xisNL7mo0oWh7k7iu9OV9p_zBlEbAjn_5gA8p0ZdcSg/Hesperides-01.jpg?psid=1


https://public.bay.livefilestore.com/y1p3wbi9VNcVX5LmSv-Y07owywf8hb9G_ZFbJ6BIgoINOs9OZSjPtBIYJsv9XQKpuQCn-988vxnv8fvGAcwO4BJ3Q/Image_00715.jpg?psid=1

[Hervé]

Thanks to Earthquake-report.com for the link to the Spanish Armada press release (http://www.armada.mde.es/ArmadaPortal/page/Portal/ArmadaEspannola/conocenos_noticias/00_noticias/2012/03/NT-057-Sondeos-Batim-Hesperides_es?_selectedNodeID=760084&_pageAction=selectItem):


Navy News

Bathymetric surveys


Thursday, 29 March 2012


The Oceanographic Research Vessel (BIO) 'Hesperides' has now made ​​bathymetric surveys off the coast of La Restinga, situated south of the Canary island of El Hierro, to follow the evolution of marine relief caused by the submarine volcano located in the zone.

The BIO 'Hesperides', which is coming back from his eighteenth Antarctic campaign and is scheduled to enter the port of Cartagena on April 3, has used its transit through the waters of the Canary Islands to assist in the acquisition of data for technical and scientific committee of the Special Plan of Civil Protection and Emergency Response for Volcanic Risk in the Canary Islands (PEVOLCA).

The vessel has made several survey lines in a grid work at coordinates: 27 ° 40'N / / 27 º 30'N latitude and 18 ° 05'W / / 17 ° 55'W longitude to determine the point of greatest height of the volcano and to check possible variations since the last bathymetric survey.





http://www.armada.mde.es/ArmadaPortal/ShowBinaryServlet?nodePath=/BEA Repository/Desktops/Portal/ArmadaEspannola/Pages/conocenos_noticias/00_noticias/2012/03/NT-057-Sondeos-Batim-Hesperides_es/foto2//imagen&scale=none

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


https://public.bay.livefilestore.com/y1pf-uHh2Jg_KP-NLXavAoOHUQxGx-qVdoPFRPC-bbZ0vlOqzUdpn3kqiiteEBqC8pLZc4bq-hhAPdya7V9Zb7okA/Image-2012-3-29-18h7mn9.jpg?psid=1


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







... acquisition of data for [...] (PEVOLCA).




Hoping I am wrong, but that means those data are gona get burried at the bottom of a filing cabinet next to their official death certificate for Polly... since that most significant of data have been conveniently omitted from the above report.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-30_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-30.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_2012-03-30_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

I hadn't seen that bird in a very, very long time:


https://public.bay.livefilestore.com/y1pXlirpkGwAUp0oXElQOeyJ7Zz3bceL1yOF_vaQX_O-Mp4aoB_OxpVZqp1qnFxaRRNNkDh__xB57FvarH8Bfb5Tg/Image-2012-3-30-14h6mn53.jpg?psid=1


https://public.bay.livefilestore.com/y1p8loZZWhmRjEN1Qg6wUluLD20BU39aRN5zWefSg-Mc2bjrWvY55KRWRyrqrvFWtX7CrvTRBFqV17MgLbwszqtBA/Image_00723.jpg?psid=1




So, in a two-day period, what do we Have?


-- "Hesperides" checking on the bathymetry;


-- Jacuzzi + stain reported in the area;


-- Salvamar Adhara playing paparazzo with Polly (see Joke Volta report on ER (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/));


-- Fixed-wings S&R checking over the area, presumably for stain extent and infrared info;



Me think Polly is ratatouilling something down there!

[Hervé]

Strongest so far (1.7 at 19:21):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-03-31_19-20.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-03-31.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_2012-03-31_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Not many hard data coming forward.

The only reliable ones are coming from Joke Volta as related by Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/):



Update 31/03 – 14:20 UTC

- Afternoon image series of Joke Volta. Most of the images are the Salvamar Adhara at work with their vintage rope camera.

- She reports from La Restinga that the Salvamar Adhara is filming around the volcano for the second day in a row (it must have been very intriguing yesterday or in Joke’s version – they had nothing on the videotape and have to do it over today). The CSIC camera the Salvamar is carrying has been especially designed for such purposes. More modern systems are also connected with a cable to a ship (energy and video lines), but these ROV systems have self-navigating capacities. The current camera is pulled around. The depth is based on the length of the rope, although the current can push the camera at a greater distance from the boat, so that the depth results are invalid.
[...]

Update 14:31 :
[...]

Joke reports that Maria José Jurado (CSIC) ran away without having to [answer] any questions and with a “backpack full of treasures” as Joke described it (it can be just a lunch of course). The underwater camera was immediately covered with a blanket (why ?)*. The way the CSIC people are behaving is really “out of bound”. At least we, and most of our readers, are not aware of any wrongdoing from our part. Earthquake-report.com is a PARTNER in information and should be treated like it.

[...]


Hard to believe that there is such an opacity (non-transparency) around such a mundane thing as the birth of a new volcano...


:rant:




* My guess is they got a BBQed camera for lunch...

[Hervé]

The M 1.7 at 19:21 occurred at a depth of 11 Km here:


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1135984.gif

[Hervé]

Strongest so far (2.7 at 22:03):





http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-01_22-23.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-01.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_2012-04-01_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

***


:fish2:


:bigfish:


***

"Poisson d'Avril"
(April Fools)

[Hervé]

The M 2.7 at 22:03 (see diagrams on previous page) happened at a depth of 15 Km here:


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1136130.gif



Polly's getting a good hiccup...

... and just tagged those politico-scientists with some rotten "poissons d'avril" on their backs.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-02_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-02.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_2012-04-02_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.


Refresh your browser page to get the latest traces.





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, 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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).

The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

:bathbaby:



bOUbqeolDdU


SEISMIC CRISIS SPECIAL - 02/04/2012 (17:28 pm)
LATEST UNDERWATER IMAGES


This is the volcano [video above]


DIARIOELHIERRO.ES (http://www.diarioelhierro.com/), writing (02.04.2012. 17:28 pm)
Last Images of the submarine volcano of La Restinga, obtained by the team of ICTJA-CSIC and the IGN, with the support of the Maritime Rescue Salvamar Adhara vessel and crew.


The images illustrate the degassing process in the area of the volcano, which is sometimes also observable on the surface. You can also see the contours of the building and volcanic cone, with numerous points of emission.


The images were obtained at depths between 100 and 150 meters. The sometimes observed reddish reflections are due to lighting effects of the camera on particles and of elevated temperatures on the elements of the camera.



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


Screen shots from above video:


https://public.bay.livefilestore.com/y1pQcNra6csDiM-X2lGkWtvc62eAgHsYUuY22pcUiDpozQHlqfCRsGfrkigTMSR1fd3VXVTzahjNmC3rR6gedpTSQ/Image-2012-4-2-15h38mn6.jpg?psid=1


https://public.bay.livefilestore.com/y1pFAFRaTeS3HT3m2lYRAAIosbhatjUlgfNH0Y62SG7bABWqZ1VXoVpfCdrJTy6c7LqmiNsLvH5JniJJRDS3R2HQw/Image-2012-4-2-15h38mn46.jpg?psid=1


https://public.bay.livefilestore.com/y1pH6SmW1RFhkLCLmE0RY1kNdMfGyKSMTt54aIehLlvMn3Et47TZfkFTh8P1ebh0sWbUF3K_CsppsABdatR5A6xIA/Image-2012-4-2-15h39mn7.jpg?psid=1



:bathbaby:

[Hervé]

Longer video of Polly's :bathbaby: which includes footage from yesterday (and better fits DiarioElHierro's explanations in above post):


aqvCvipXCaQ

[Hervé]

Getting intrigued by the apparent amount of back/ambient light in this video and which is absent in the Margalef or Atlantic Explorer videos, I became curious about:



12. Light Penetration in the Ocean (http://oceansjsu.com/105d/exped_briny/13.html)


http://oceansjsu.com/images/light.gif
Used with Permission of Matthias Tomczak (http://gaea.es.flinders.edu.au/~mattom/ES1/contents.html) ©Copyright 1997





The colored curves on the graph above show the intensity of light (solar radiation) at different depths in the ocean plotted against wavelength of light at each depth. The colors indicate light intensity at four water depths:
0 meters

0.01 meter = slightly less than a half inch

0.5 meters=20 inches

100 meters=330 feet

Light absorption in the sea reduces the amount of visible light rapidly with depth.
[...]




Also, the intensity of this light decreases rapidly with water depth, for example,

only 73% of the surface light reaches a depth of 1 centimeter (less than a half inch)
only 44.5% of the surface light reaches a depth of 1 meter (3.3 feet)
22.2% of the surface light reaches a depth of 10 meters (33 feet)
0.53% of the surface light reaches a depth of 100 meters (330 feet)
0.0062% of the surface light reaches a depth of 200 meters
Bottom line -- most of the light is absorbed or scattered within the top few meters of the ocean.

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

So... 100 meters deep? Possible. 150 meters deep? NAH!



https://public.bay.livefilestore.com/y1pU9xP0RpM3eAPqZPfloC4ccB2Ya8VMEA_hQM0H0mVGm4_er9xk1k6VHiBdxnT9XqGGpS0XPqziLJe4u5eFi7cwg/Image-2012-4-2-17h28mn27.jpg?psid=1


https://public.bay.livefilestore.com/y1pc9GSZ-OKGeVtaS13j1Qs8IEcsO07nMMmVgmvLwUsNLXkLGle-NwsjUximztRkbhd2PZhO8o6IbujYQ4q9YP6IQ/Image-2012-4-2-17h30mn28.jpg?psid=1


https://public.bay.livefilestore.com/y1pLMkAlpwi9K4GgegGMEbDwa0-zvgp5-Fu3ZVfrc6PHxzs0ZneVweEaLCJ6oqJWa4kkdOO1DbE4HGDVWZaikbz4w/Image-2012-4-2-17h30mn42.jpg?psid=1


https://public.bay.livefilestore.com/y1pn7u6J0HYP4UL-SBWeb2Q65wb_LhLf7IJI8fl9wtxO2m6lupZRYdxtnpDflwSL9KLiqc_CJMmSKMceDuyzEpDNg/Image-2012-4-2-17h31mn25.jpg?psid=1


https://public.bay.livefilestore.com/y1psv9ci-oE9NnCujYgUALUuGBeOyRU6RGhhWXsgblzC9w-JFe_vR7aCv_uWCzYl4i4U1i_fH1-3nIX6X1VeZ_Qqw/Image-2012-4-2-17h32mn9.jpg?psid=1


https://public.bay.livefilestore.com/y1pWHK93yEku8xTrqJIrJ7fLPn89MJRGHbD1NKWoCQVTb3YmJ8OHYmy5uXcZI1XR5Ihd_dpHornzl15Y12RxAuy6Q/Image-2012-4-2-17h33mn25.jpg?psid=1

[Hervé]

Strongest so far (2.5 at 06:55):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-03_06-07.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-03.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_2012-04-03_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

The M 2.5 at 06:55 occurred at a depth of 12 Km here:


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1136536.gif

[Hervé]

Strongest so far (no data):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-04_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-04.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_2012-04-04_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

***


Thank you to the more than 110,000 viewers who support this thread!


Since July, IGN has officially logged 12,560 tremors at El Hierro... and still counting since the seismic activity is still on going!


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


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


Again,

THANK YOU !

[Hervé]

New Jacuzzi spot for Polly, captured by Joke Volta and posted at Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/):


https://lh3.googleusercontent.com/-qprdkbaJqME/T3yI5gFnhvI/AAAAAAAAOD4/RanyUVrfYFk/s1228/4+zoom.jpg


https://lh3.googleusercontent.com/-Z2JBh1HHq6M/T3yI-LKvXrI/AAAAAAAAOEQ/S58zKUhigao/s1228/8other+spot+4th+of+april+2012.jpg




As for Nemesio Perez... I don't think he has any feet left to shoot...

[Hervé]

Strongest so far (no data):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-05_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-05.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_2012-04-05_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-06_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-06.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_2012-04-06_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Cornide de Saavedra checking out on Polly:


https://public.bay.livefilestore.com/y1pVqIsTqtkynB9faNQ8YUzBM04DRT0L-hH1YqoEShoBGU9O4TZeWDuzIp08tcTYR4KLyk6R1mE7dWNOZV1jd-9dw/CORNIDE_DE_SAAVEDRA-03.jpg?psid=1

https://public.bay.livefilestore.com/y1p2GjHRxdZuBR2S_bKvrCzn4GV_k3cEXf5cYvVAvZt4Zvcrjhabk13q9nw5C5M1D7fymOj2BAGTux5oXPDEwC-CA/Image-2012-4-5-20h31mn0.jpg

[Ellisa]

I always read this topic. Thank you for keeping me (and others of course) informed about an area of the world I would not have known much about. I have enjoyed reading about your country on the internet after reading these posts. I hope that the quakes will settle soon. It must be stressful.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-07_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-07.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_2012-04-07_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Some of the meanderings (outside of the GPS shadow zone) of Cornide de Saavedra around La Restinga:


https://public.bay.livefilestore.com/y1pEdgV9VANZK9gZXKH0_LrnDDen-iTG5h_54CS5S42zPH16btW3UVMZQWAfH1-_WCEmisuNbt0_aVLhU6IdVFI7g/Image-2012-4-6-19h32mn31.jpg?psid=1

[Hervé]

Today's meanderings:


https://public.bay.livefilestore.com/y1poreKoI1p86euj0X5i-YW-wVp4WcOodFaA-lHnGoySMoXqq-fSF27eoC7fiW69RnFjIfKegD_miwF73NDs0zPIQ/Image-2012-4-7-13h6mn18.jpg?psid=1

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-08_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-08.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_2012-04-08_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

While we are still in waiting to see something to come out of the IGN hoarded data, the "independents," ostracized, personae non gratae excluded from the sanctum sanctorum of the official labyrinth have been busy extracting the juicy stuff from these mineral coconuts smuggled out of El Hierro and known as Restingolitas:


Floating stones off El Hierro, Canary Islands: xenoliths of pre-island sedimentary origin in the early products of the October 2011 eruption

V. R. Troll1,2, A. Kl¨ ugel3, M.-A. Longpr´e4, S. Burchardt1, F. M. Deegan1,5, J. C. Carracedo6, S. Wiesmaier7,
U. Kueppers7, B. Dahren1, L. S. Blythe1, T. H. Hansteen8, C. Freda2, D. A. Budd1, E. M. Jolis1, E. Jonsson1,9,
F. C. Meade1,10, C. Harris11, S. E. Berg1, L. Mancini12, M. Polacci13, and K. Pedroza1
1Dept. of Earth Sciences, CEMPEG, Uppsala University, Sweden
2Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
3Institute of Geosciences, University of Bremen, Germany
4Dept. of Earth and Planetary Sciences, McGill University, Canada
5Laboratory for Isotope Geology, Swedish Museum of Natural History, Stockholm, Sweden
6Dept. of Physics (Geology), GEOVOL, University of Las Palmas, Gran Canaria, Spain
7Dept. of Earth and Environmental Sciences, Ludwig-Maximilians Universit¨at (LMU), Munich, Germany
8Leibniz-Institute for Oceanography, IFM-GEOMAR, Kiel, Germany
9Geological Survey of Sweden, Uppsala, Sweden
10School of Geographical and Earth Sciences, University of Glasgow, UK
11Department of Geological Sciences, University of Cape Town, South Africa
12SYRMEP Group, Sincrotrone Trieste S.C.p.A, Basovizza, Trieste, Italy
13Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, 56124 Pisa, Italy

Correspondence to: V. R. Troll (valentin.troll@geo.uu.se)
Received: 18 November 2011 – Published in Solid Earth Discuss.: 1 December 2011
Revised: 27 February 2012 – Accepted: 27 February 2012 – Published: 13 March 2012



Abstract. A submarine eruption started off the south coast of El Hierro, Canary Islands, on 10 October 2011 and continues at the time of this writing (February 2012). In the first days of the event, peculiar eruption products were found floating on the sea surface, drifting for long distances from the eruption site. These specimens, which have in the meantime been termed “restingolites” (after the close-by village of La Restinga), appeared as black volcanic “bombs” that exhibit cores of white and porous pumice-like material. Since their brief appearance, the nature and origin of these “floating stones” has been vigorously debated among researchers, with important implications for the interpretation of the hazard potential of the ongoing eruption. The “restingolites” have been proposed to be either (i) juvenile high-silica magma (e.g. rhyolite), (ii) remelted magmatic material (trachyte), (iii) altered volcanic rock, or (iv) reheated hyaloclastites or zeolite from the submarine slopes of El Hierro. Here, we provide evidence that supports yet a different conclusion.
We have analysed the textures and compositions of representative “restingolites” and compared the results to previous work on similar rocks found in the Canary Islands. Based on their high-silica content, the lack of igneous trace element signatures, the presence of remnant quartz crystals, jasper fragments and carbonate as well as wollastonite (derived from thermal overprint of carbonate) and their relatively high oxygen isotope values, we conclude that “restingolites” are in fact xenoliths from pre-island sedimentary layers that were picked up and heated by the ascending magma, causing them to partially melt and vesiculate. As they are closely resembling pumice in appearance, but are xenolithic in origin, we refer to these rocks as “xeno-pumice”. The El Hierro xenopumices hence represent messengers from depth that help us to understand the interaction between ascending magma and crustal lithologies beneath the Canary Islands as well as in similar Atlantic islands that rest on sediment-covered ocean crust (e.g. Cape Verdes, Azores). The occurrence of “restingolites” indicates that crustal recycling is a relevant process in ocean islands, too, but does not herald the arrival of potentially explosive high-silica magma in the active plumbing system beneath El Hierro.

V. R. Troll et al.: Floating stones off El Hierro, Canary Islands
Published by Copernicus Publications on behalf of the European Geosciences Union.
98 V. R. Troll et al.: Floating stones off El Hierro, Canary Islands
http://www.solid-earth.net/3/97/2012/se-3-97-2012.pdf (http://www.solid-earth.net/3/97/2012/se-3-97-2012.pdf)

[avid]

They are keeping their 'floating stones' close to their 'life-vests' then....
Why is everyone so secretive these days? What is there to gain - no kudos if tragedy is able to be forewarned!? However, tourist money in certain 'pockets' could be withheld. This whole scenario absolutely stinks of rotten-fed gas...
Avid (grrrr)

[Hervé]

Cornide still combing the area:


https://public.bay.livefilestore.com/y1pkweVRBsI_NzVFJgkO-HwxmsE8w8aSvuM2dEv_ElfXpqCuyBbWYdBL6HVVN6Stz5Mtfkm1gb_wnIGaWt6OKgDxw/Image_00727.jpg?psid=1


https://public.bay.livefilestore.com/y1pHYME0fpFRyLdTc1jJu02IWd1xISTylzLNxCwHw2ffQb9ZNvB59afRqgslGgSExFq4OO2epNSt1nwTzpvr62UrQ/Image-2012-4-8-17h39mn32.jpg?psid=1

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-09_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-09.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_2012-04-09_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.


Refresh your browser page to get the latest traces.





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, 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 January 01, 2012. 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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

There was this depeche from the Cornide de Saavedra to Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/):




Update 08/04 – 21:56 UTC
- We received the following note from somebody of the Cornide de Saavedra :

This is the Cornide. We are in the Cetobaph Cruise 2012. We are looking for zifios (ER: zifios are dolphins (http://www.canariasconservacion.org/Documentos/Zifios.El%20Indiferente.pdf)) and studying the Oceanographic’s conditions of El Mar de Las Calmas. Nothing about the volcano geology or something similar. This is a multi disciplinary cruise between the Las Palmas University, IEO and La Laguna University.
If you need more information about our cruise, please, ask us.
La Laguna University Research


Then looking at Cornide's track and seeing this:


https://public.bay.livefilestore.com/y1pUdXyrWbnSwSJ70EJfaqxo5RDA-2wNHPvmp4KkFwY7u3BTn2Pj_HCotEU6FILzDvMe6-aKznB0gcP4evjBe7s4w/Image-2012-4-9-15h31mn39.jpg?psid=1




... that's right on top of the cone located by Ramon Margalef... something's fishy.

[avid]

obviously dashing around madly looking for 'zifios'...... (if the zifios had any sense - they would be long gone, and all the dolphins' rellies as well)... oh deary me ;-)

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-10_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-10.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_2012-04-10_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-11_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-11.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_2012-04-11_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

It seems that the Harmonic Tremor is "refluffing" again and gaining in intensity (see diagram, post # 2086)

[Hervé]

The wiggly thing starting at 08:53 on CHIE daily graph corresponds to an 8.9 EQ in Sumatra, seen here as recorded at La Gomera:


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-04-11.jpg


... downgraded to 8.6 on the seismologist-reviewed report.



The next wiggly thing at 11:00 is the 8.2 "aftershock" in the same area which is going to make the above trace totally unreadable.

[avid]

I remember seeing graphs of natural EQ build up, and sudden sharp ones of 'the other type' of EQ (ahem). That would be interesting to note.

Avid

[Hervé]

I remember seeing graphs of natural EQ build up, and sudden sharp ones of 'the other type' of EQ (ahem). That would be interesting to note.

Avid

These ones have the natural, textbook earthquake signature with P and S waves well differentiated at their arrival time at la Gomera.


Here is the trace from Lanzarote where it's better decipherable with the sequence of traces being Blue, Green, Red (for the M 8.6):


http://www.ign.es/ign/resources/volcanologia/EFAM/imagenes_sismica/DIA/EFAM_2012-04-11.jpg



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


Starting at the black trace at 11:00 is the 8.2 "aftershock" (Black, Blue, Green traces).

[Hervé]

Strongest so far (no data):

It seems like all the servers from the Canary islands have been off line since yesterday 16:00, following the Sumatra double whammy.


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-12_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-12.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_2012-04-12_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

All right, the squiggy line at 23:00 on the La Gomera and Lanzarote seismograms from yesterday corresponds to this one in Mexico:

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/255_20.php)6.5 2012/04/11 22:55:11 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc00090z0.php) 18.272 -102.732 20.0 MICHOACAN, MEXICO

http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/255_20.gif


http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/Legends/legend.gif



Then, today, these ones occurred:

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/245_30.php)6.9 2012/04/12 07:15:49 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc00091a1.php) 28.790 -113.142 10.3 GULF OF CALIFORNIA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/245_30.php)6.2 2012/04/12 07:06:01 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc000919m.php) 28.841 -113.072 10.1 GULF OF CALIFORNIA


http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/245_30.gif


http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/Legends/legend.gif



Giving off these seismograms:


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-04-12.jpg


http://www.ign.es/ign/resources/volcanologia/EFAM/imagenes_sismica/DIA/EFAM_2012-04-12.jpg

[Hervé]

The volcano of El Hierro stops issuing sulfur, but continues to expel much CO2
Las Palmas de Gran Canaria, EFE 12 de abril de 2012

http://www.que.es/archivos/201204/4502113w-640x640x80.jpg
Photo: Image provided by the Spanish Institute of Oceanography (IEO) of a South-North echogram of the volcano of El Hierro performed during Holy Week, which shows how the expulsion of CO2 and ash continues under the sea surface, although the volcano no longer expels the sulfur from which stemmed the characteristic green plume which could be seen for months at sea. EFE


The Spanish Institute of Oceanography (IEO) and the University of Las Palmas de Gran Canaria have sent their report this week, to the Civil Protection Plan against Volcanic Risk (Pevolca), on the campaign conducted between 5 and April 9 in the sea ​​of ​​Calm, to study the chemical, physical and biological features of the water in the area of ​​the eruption.

The report notes that the sea conditions have returned to normal in most of the maritime area situated opposite the village of La Restinga, except in an area of ​​500 meters around the crater where significant changes can still be seen, although the eruption supposedly ended on 5 March.

The coordinator of the campaign by the IEO, Eugenio Fraile, explained to EFE that none of the 19 hydrographic stations installed in the campaign, from the surface to the seabed, have detected the presence of the sulfur material emitted in abundance for months by the volcano of El Hierro, to the point of creating a plume in the sea visible from space.

However, the volcano degassing process is not over, which has caused some surprise among his colleagues. "We thought this was going to stop some time, but continues," has recognized this researcher from the Canary Oceanography Centre, located in Santa Cruz de Tenerife.

Seven months after the beginning of the eruption, the volcano continues to provide large amounts of ocean carbon dioxide, which is transformed into carbonic acid when mixed with water and significantly alters the pH of the sea within 500 meters.

The pH levels in the area are below normal values​​: on the surface, just above the crater, we have measured a pH of 7.1 (0.9 units below normal), while in deep water and in direct contact with the crater we have obtained a value of 6.1 (1.8 units below normal).

Eugenio Fraile has stated that the area affected by these changes is small and exposed to the action of currents, so the wildlife is barely noticing these changes, nor another one taking place with another parameter: salinity.

In this area lies another surprise the latest campaign on the volcano has brought up to scientists: salinity in the area above the volcano has dropped 0.1 points compared to adjacent waters.

To illustrate the extent of such alteration, Eugenio Fraile noted that climate change is expected to rise the salinity in the Canary Islands by 0.1 points in a decade.

"This means that the undersea volcano, seven months after the start of the eruptive process, is producing a variation in the salinity field of similar magnitude to that expected in the next ten years, but of opposite sign," he added.

[Article in Spanish: http://www.que.es/ultimas-noticias/sucesos/201204121843-volcan-hierro-deja-emitir-azufre-efe.html?anker_5]

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-13_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-13.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_2012-04-13_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

:confused: :yell: :Cry:


Typical PEVOLCA "newspeaks":

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

EUROPA PRESS, S / C Tenerife (04.13.2012. 10:25 pm)
The Oceanographic Research Vessel (BIO) 'Las Palmas' has held Thursday bathymetric surveys off the coast of La Restinga, to update the data of the relief caused by the underwater volcano.


The BIO 'Las Palmas', which is back from his 15th campaign Antarctica and is scheduled to arrive at the port of Cartagena on April 17, made the measurements for the technical and scientific committee of the Special Plan of Civil Protection and Emergency Response Volcanic risk in the Canary Islands (Pevolca).


The Navy is working with the Program bathymetric surveys prepared by the Directorate for Civil Protection and Emergency for monitoring underwater volcano emerged off the coast of La Restinga. On 29 March the Oceanographic Research Vessel 'Hesperides' measurements performed in the area of ​​volcanic activity, according to the Navy.


Moreover, scientists at the University of Las Palmas de Gran Canaria and the Spanish Institute of Oceanography (IEO), integrated into the project CETOPABH (Cetacea, oceanography and deep-sea biodiversity of La Palma and El Hierro), University of Laguna, rule out the presence of sulfur in the Sea of ​​calms, according to the Government of the Canary Islands.


These findings, sent to the address of the Civil Protection Plan for Volcanic Risk (PEVOLCA) detail the implementation of 19 hydrographic stations from surface to the ocean floor south of La Restinga, from 5 to 9 April on board Cornide Saavedra, the IEO.


Preliminary results find that there is no presence of reduced sulfur compounds and the pH values ​​in surface and deep waters at stations outside the volcano present normal values ​​for this time of year.


The stations just above the volcano, and within a radius of 500 meters, do have pH values ​​well below normal parameters of abnormal CO2 degassing due to a phenomenon that is still being produced.
*********************************



'Las Palmas' has held Thursday bathymetric surveys off the coast of La Restinga, to update the data of the relief caused by the underwater volcano.

The Navy is working with the Program bathymetric surveys...

Preliminary results find that there is no presence of reduced sulfur compounds...


:confused: :wacko: :der: :mad2: :yell:


:rant:

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-14_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-14.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_2012-04-14_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-15_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-15.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_2012-04-15_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Daughter of Time]

Hello Amzer,
I see that in just over one year you have posted 2,000 times, each one of them informative, intelligent, so well thought out and researched and so very welcome. Thank you for your dedication.

[Hervé]

Hello Amzer,
I see that in just over one year you have posted 2,000 times, each one of them informative, intelligent, so well thought out and researched and so very welcome. Thank you for your dedication.

That's a cool 100th post!

Thank you!

[Hervé]

Polly’s* latest:

Strongest so far (3.1 at 11:45 followed by a 2.2 at 11:57):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-16_11-12.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-16.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_2012-04-16_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.


Refresh your browser page to get the latest traces.





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, 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
[ Ain't it neat that IGN quit scaling 1/2 earthquakes... : ) ]


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


New cumulative graph starting January 01, 2012. 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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

The 3.1 at 11:45 occurred 14 Km deep here:


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1138918.gif (http://javascript<b></b>:ampliarDetalleTerremotoVolc('1138918'))


... and the 2.2 at 11:57 occurred 19 Km deep right there:


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1138921.gif (http://javascript<b></b>:ampliarDetalleTerremotoVolc('1138921'))


Too bad Polly missed shaking those visiting senators... but is certainly thumbing her nose at Nemesio and Ramon.

[pyrangello]

Amzer , many thanks from this end of the world too!

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-17_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-17.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_2012-04-17_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Chile and Papua New Guinea earthquakes showing at La Gomera station:


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-04-17.jpg



MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/290_-35.php) 6.7 2012/04/17 03:50:17 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc00095a2.php) -32.701 -71.484 37.0 OFFSHORE VALPARAISO, CHILE

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/145_-5.php) 6.8 2012/04/17 07:13:50 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc00095c9.php) -5.474 147.097 208.2 EASTERN NEW GUINEA REG, PAPUA NEW GUINEA

... but only show up as small wiggles on the CHIE seismogram.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-18_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-18.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_2012-04-18_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (2.2 at 08:33):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-19_08-09.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-19.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_2012-04-19_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Sejo at todogeologia.com (http://tenerife.todogeologia.com/viewtopic.php?f=1&t=1827) compiled one component of the GPS data for Frontera up to now:

http://tenerife.todogeologia.com/download/file.php?id=1242

Considering the three components at FRON up until September 2011 (before PEVOLCA's clamp down on the useful data):


https://public.bay.livefilestore.com/y1ppPWprbFfi2rjGh7DKQT99XbI1YfF0JP3D1blBAnMy8N4rFCpdG3131PutnwY3pp24LfU7Umgv57f50OBWvpDlA/FRON%20GPS%20data-01.png?psid=1


Extrapolating the no-change to the other two components and one can conclude the recent earthquakes SW of El Pinar to be NOT due to the settling down/emptying of the magma chamber!

[Hervé]

Now... this is weird:

Evento-----Fecha-----Hora(GMT)*---Latitud -----Longitud --Prof. (km)--Int. -Tipo Mag. --Localización
1139623---19/04/2012---08:33:32---27.7154--- -17.8023------32 ----- 2.2 ----- 4 ----- SE VALVERDE



http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1139623.gif (http://javascript<b></b>:ampliarDetalleTerremotoVolc('1139623'))


It occurred right in front of the CHIE station at a depth of 32 Km and there's barely a wiggle on the seismogram???

[Hervé]

On the political side:




Update 19/04 – 12:09 UTC
- In a short twitter message from the Cabildo de Hierro (office of Mr. Alpidio Armas), the Green Alert of the entire island has been declared by Pevolca. Due to the very slim activity of the last couple of weeks (only faint stains and degassing), the Alert level change seems logical to Earthquake-Report.com

http://earthquake-report.com/wp-content/uploads/2011/09/eh-19042012-1.jpg




From Earthquake-report.com (http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/)
Meaning that the entire El Hierro island has been re-instated to the green semaphore.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-20_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-20.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_2012-04-20_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-21_01-02.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-21.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_2012-04-21_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Checking if this one:

-----MAG (http://earthquake.usgs.gov/earthquakes/glossary.php#magnitude)-------UTC (http://earthquake.usgs.gov/earthquakes/glossary.php#date)-----------LAT -- (http://earthquake.usgs.gov/earthquakes/glossary.php#location)LON - (http://earthquake.usgs.gov/earthquakes/glossary.php#location)-DEPTH---------------- (http://earthquake.usgs.gov/earthquakes/glossary.php#depth)Region (http://earthquake.usgs.gov/earthquakes/glossary.php#region)

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/135_0.php) 6.6 2012/04/21 01:16:55 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc00098nl.php) -1.609 134.232 29.8 NEAR THE NORTH COAST OF PAPUA, INDONESIA

... is going to show up at the La Gomera station:


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-04-21.jpg



Yep!

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-22_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-22.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_2012-04-22_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[crested-duck]

You've been a trooper on this thread since before I started reading it, I send you my respect and thanks!--Rob

[Hervé]

Evento-----Fecha-----Hora(GMT)*---Latitud -----Longitud --Prof. (km)--Int. -Tipo Mag. --Localización
1140039---22/04/2012---08:17:55---27.6075-- -18.0220---------17 ---1.7 ------4 -----SW EL PINAR.IHI



http://www.02.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1140039.gif (http://javascript<b></b>:ampliarDetalleTerremotoVolc('1140039'))

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-23_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-23.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_2012-04-23_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-24_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-24.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_2012-04-24_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Carmen]

Amber Zo, without reading all of the posts, how is Randles and where is she? Is she still on the island or has she shifted to a safer place. I haven't noticed any posts from her for ages! BTW, you have done a great job with all this info.

[Hervé]

Amber Zo, without reading all of the posts, how is Randles and where is she? Is she still on the island or has she shifted to a safer place. I haven't noticed any posts from her for ages! BTW, you have done a great job with all this info.

No data or news on or from randles since early December last year. No idea where she is nor how she is doing.

Went AWOL, under all apparency.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-25_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-25.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_2012-04-25_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.


Refresh your browser page to get the latest traces.



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, 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 January 01, 2012. 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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-26_03-04.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-26.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_2012-04-26_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

All Harmonic Tremor graphs are displaying a serious "defluffing" and starting to look like wet, skinny sparrows... indicating that magma motions under the Canary islands are getting into a stall:


http://www.ign.es/ign/resources/volcanologia/EFAM/imagenes_sismica/DIA_SP/EFAM_2012-04-26_sp.jpg


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA_SP/EGOM_2012-04-26_sp.jpg


Oooops... refluffing again...

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-27_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-27.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_2012-04-27_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-28_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-28.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_2012-04-28_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

All right, now that I have some references on what the scale is on this screen:


https://public.bay.livefilestore.com/y1pTYZMjtoMzBRFvkk0vxpOvp4KKx132woCeOHB7gYVeXi6a8ECfIJMLW16_VQVxbsVIkkE0RAiEqE21o_e16NpIw/Cornide-2012-04-09-01.jpg?psid=1


... thanks to Julio Del Castillo Vivero's shot of the Atlantic Explorer sonar screen:



https://public.bay.livefilestore.com/y1p68E1xiYjvr6bn3D3tEj__7oX_iHaGoUiAc_RiKzxjqRtsTL5tPRGOig85fFMSY11_HIhP_8uCl6kVm18CsOm0w/Atlantic%20Explorer-01.jpg?psid=1



... It seems that the top part of the cone was around the 80 meter depth range a while back... and still is!

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-29_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-29.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_2012-04-29_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-04-30_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-04-30.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_2012-04-30_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-01_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-01.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_2012-05-01_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Some actual data from ULPGC/QStar via Actualidad Volcánica de Canarias (AVCAN) (http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446):

Our dear friend Antonio González Ramos has made the following report in a post below. Thank you for the attention given to AVCAN and all that here we are bringing all this information firsthand. (Humberto)

Antonio González Ramos:

We had the meeting ULPGC/QStar for the following release... The preliminary results are indicating:

1. - The slick comes and goes at the rhythm of current flows in 3D. Morning and afternoon are different (in March we did the same, was on 13 and 14).... When the current is strong, the plume is diverted/transported into the deep layers and no trace will surface....

2. - The greenish water is related to metallic elements that are complex chemicals that are coloring it (rust). No sulfide... which is VERY GOOD.

3. - We confirm that there is still ash on the water (well it was obvious).... One of the magnetic trigger activating the closing the sampling bottle (the 50-m) did not shut it. Ash was padded with "magnetic" particles (metals). This has happened before in previous outings. The ash is definitively (and will for a little while) quite a headache (ROVs, cameras, accurate morphometry, oceanographic sensor system).

4. - The indicative value is the ph. 7 in the morning, 7.5 for the afternoon (tide mixing-water and standardization ...). The normal pH in the ocean (= canary) is basic (> 8.2). This slightly acidic pH is indicative of a high content of CO2 in water (confirmed) and there are still some acidity in the water. In any case much less than the peak pH 5 in Oct/Nov/Dec 11....

That explains the bubbling (gas-co2), the echo signal (gas + ash depth). Also explain the green color (iron quelos), anoxia (low pH, high CO2). It would also explain (confirmed) the accumulation in surface coastal pelagic juvenile fish (sardines/mackerel ...) which, passing by, and suffered a small column of water (20-30 m width) with lack of O2 as pointed by Octavio, acid pH, loading of ash adhering to the gill arches and eyes... It also confirmed why the seagulls' feast... are undeterred....

This also is a good sign... This microphenomenon of local fish mortality, at least, is limited to this known environment... and seagulls (who see the stain the first) are responsible for metabolizing these accidental loss of biomass/fish and turn them back into organic matter returns to the system....

Strength, wind, sea and honor to all.

Team ULPGC/QSTAR.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-02_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-02.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_2012-05-02_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-03_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-03.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_2012-05-03_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

***


To the more than 120,000 viewers who support this thread:



THANK YOU !


Since July, IGN has officially logged 12,589 tremors at El Hierro... and still counting since the seismic activity is still on going!


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


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


Again,


THANK YOU !

[Daughter of Time]

Congratulations Amzer!
And thank you! Thank you for your tireless work and dedication in informing us about a place some of us did not know existed. And since tremors can have powerful ripple effects, what happens in one end of the world, affects us all.
With gratitude,
Daughter of Time

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-04_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-04.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_2012-05-04_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-05_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-05.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_2012-05-05_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-06_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-06.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_2012-05-06_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Now...

That harmonic tremor is really getting skinny... and might be indicative that Polly is going into a deep slumber.

Who knows how long that slumber is gona last... whether it'll be days, months, years, decades, centuries or millennia?

I'll just keep an eye on it.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-07_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-07.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_2012-05-07_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-08_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-08.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_2012-05-08_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-09_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-09.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_2012-05-09_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.


Refresh your browser page to get the latest traces.





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, 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 January 01, 2012. 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_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

New videos show the underwater volcano of El Hierro and the emission of gases in the area (http://www.lavozdelanzarote.com/article69708.html)

VZGzNhuBCnE

A team from the CSIC and the IGN, with the collaboration of the crew of the Salvamar Adhara, Sea Rescue, has obtained new images of the underwater volcano of El Hierro and degassing process is observed in the shallow zone of the volcano.

"The images that follow show an intense degassing, which are often recognized manifestations (bubbling and greenish) on the surface of the sea by gases rising to the surface of the sea" they explain.

In the area there have been repeated filming at checkpoints to assess qualitatively the evolution of the degassing process. In the recorded images are recognized "the typical morphologies of submarine volcanic rocks and morphologies that correspond to volcanic cones and craters."

fUU7cRRSv1A

The film, being made systematically, allowed the team to the CSIC-IGN identify different types of lava and volcanic deposits and characterize the different areas of the volcanic structure. Specifically, in areas of intense emission of gases have been identified in the images some dead fish in the background.

The underwater camera used is of Spanish manufacture and design, resistant to gases and temperature in the work area has adapted to the needs of research in an area with rugged terrain and irregular.

From: http://www.lavozdelanzarote.com/article69708.html



Summary video uploaded by Presidencia Gob. de Canarias (http://www.youtube.com/user/presicanarias?feature=watch)

Jxdcfcyu4Co

Note: Videos were edited and/or put together on May 2sd.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-10_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-10.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_2012-05-10_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-11_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-11.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_2012-05-11_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-12_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-12.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_2012-05-12_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-13_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-13.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_2012-05-13_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-14_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-14.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_2012-05-14_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

The squiggle at 10:12 above, is from this one in Chile:


--- MAG (http://earthquake.usgs.gov/earthquakes/glossary.php#magnitude) - UTC DATE-TIME (http://earthquake.usgs.gov/earthquakes/glossary.php#date) ----- LAT (http://earthquake.usgs.gov/earthquakes/glossary.php#location) -- LON (http://earthquake.usgs.gov/earthquakes/glossary.php#location) -DEPTH (http://earthquake.usgs.gov/earthquakes/glossary.php#depth) ---- Region (http://earthquake.usgs.gov/earthquakes/glossary.php#region)

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/290_-20.php) 6.2 2012/05/14 10:00:39 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb0009pcc.php) -17.816 -69.749 98.3 TARAPACA, CHILE

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-15_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-15.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_2012-05-15_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-16_00-01.jpg

For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-16.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_2012-05-16_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.


Refresh your browser page to get the latest traces.


See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

All Canarian seismographs have been off lines since yesterday morning 9 am.

No idea when the data will be all caught up on?



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-17_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-17.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_2012-05-17_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-18_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-18.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_2012-05-18_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-19_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-19.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_2012-05-19_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Interesting summary paper published by JC Carracedo et al and reproduced at Earthquakereport.com (http://earthquake-report.com/):


The 2011 submarine volcanic eruption in El Hierro (Canary Islands), Spain – Eruption overview

Last update: May 18, 2012 at 6:19 pm by By Armand Vervaeck (http://earthquake-report.com/author/armand-vervaeck/)


http://earthquake-report.com/wp-content/uploads/2012/05/eh-car-0.jpg
Dr. Juan Carlos Carracedo Gómez - ULPGC

Forty years after the Teneguía Volcano (La Palma, 1971), a submarine eruption took place off the town of La Restinga, south of El Hierro, the smallest and youngest island of the Canarian Archipelago. Precursors allowed an early detection of the event and its approximate location, suggesting it was submarine. Uncertainties derived from insufficient scientific information available to the authorities during the eruption, leading to disproportionate civil protection measures, which had an impact on the island’s economy based primarily on tourism, while residents experienced extra fear and distress.


[...]



http://earthquake-report.com/wp-content/uploads/2012/05/eh-car-6.jpg


Fig. 6. Sketch showing the structure of El Hierro Island and the 2011 events. Ascending magma that, according to the distribution of seismic events prior to eruption, moved sub-horizontally from north to south in the oceanic crust, is interacting with the pre-volcanic sedimentary rocks. The floating rocks found at El Hierro during the early days of the eruption are the products of magma– sediment interaction beneath the volcano. These ‘restingolites’ were carried to the ocean floor during eruption and melted and vesiculated while immersed in magma. Once erupted onto the ocean floor, they separated from the erupting lava and floated on the sea surface due to their high vesicularity and low density (from Troll et al., 2011).



[...]



http://earthquake-report.com/wp-content/uploads/2012/05/eh-car-7.jpg
Fig. 7. Scientific information available during the 2011 submarine eruption in El Hierro and civil protection measures taken.

The overall relatively low magnitude seismicity (the greater part of magnitudes < M 3.0), and the comparatively small and deep (> 150 m) basaltic submarine eruption seems thus to have caused surprisingly greater distress and economic loss than a similar magnitude eruption on land in 1971 (Teneguía Volcano, La Palma). This eruption was managed 40 years ago without disturbing the population to the same extent or causing economic hardship.

One explanation is that, in contrast to the 1971 Teneguía eruption, during the 2011 eruption accurate scientific information was not available at decisive points to dispel uncertainties and provide appropriate criteria to manage the situation (Fig. 7). The plan for volcanic emergencies by PEVOLCA tasks the National Geographic Institute (IGN) with managing the scientific aspects. IGN geophysicists analyzed and interpreted correctly the seismic precursors, allowing early detection of the time and approximate location of the eruption, and predicting it to be submarine. However, at the onset of the eruption a small group of scientists took charge to the exclusion of others, ignoring independent observations and data. Thus, objective scientific advice to enable the authorities to make the correct decisions at crucial points in time was not forthcoming.

This is best illustrated by the failure to anticipate the need for a survey vessel that could provide detailed information about the eruptive activity occurring under the sea. The first evacuation of La Restinga shortly after the onset of the eruption was probably ordered because the authorities had insufficient information about the distance and depth of the submarine vent, and were thus fearing the onset of explosive (surtseyan) activity.

Once the IEO vessel arrived the depth and main features of the submarine volcano were determined.

However, a lack of coordination between the scientific committee and the oceanographic research vessel resulted once more in incomplete information about the progress of the eruption and the proximity of the submarine vent to the surface. Strong bubbling and degassing, and abundant rock fragments resembling lava bombs found floating on the ocean surface on 5 November 2011 prompted the authorities to order the second evacuation of La Restinga (see Fig. 7), due to uncertainties regarding the involvement of ‘explosive’ high silica magma (the ‘restingolites’). A report by non-PEVOLCA scientists—involving chemical analyses of quartz crystals, which concluded these to be sediments—was ignored. A survey carried out by the vessel a week later found that the submarine cone had meanwhile collapsed and was now about 200 m below the ocean surface.

Civil protection measures taken in this 2011 submarine eruption in El Hierro (that posed little danger to human life) seem disproportionate and likely resulted from the lack of adequate scientific information.

This stresses the need to analyze such events to carefully, in order to improve the use of the scientific and human resources available during future events.
What would the outcome be if a volcanic eruption, instead of taking place off the small island of El Hierro, occurred in the densely populated islands of Tenerife or Gran Canaria?

Acknowledgements
This reconstruction of the 2011 submarine eruption in El Hierro, Canary Islands, is based in geophysical data obtained by the Spanish Geographic (IGN) and Oceanographic (IEO) Institutes. Carmen López and María José Blanco (IGN) provided valuable data and information.



Full article here: http://earthquake-report.com/2012/05/18/the-2011-submarine-volcanic-eruption-in-el-hierro-canary-islands-spain-eruption-overview/

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-20_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-20.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_2012-05-20_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Again, all Canarian seismographs have been off lines since yesterday morning 8 am.

No idea when the data will be all caught up on?



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-21_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-21.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_2012-05-21_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Again, CHIE and Tenerife (CCAN) seismographs have been off lines since yesterday 12 pm.

No idea when the data will be all caught up on?



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-22_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-22.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_2012-05-22_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

The La Gomera seismogram displaying the Italy and Honshu quakes:


---- MAG (http://earthquake.usgs.gov/earthquakes/glossary.php#magnitude) - UTC DATE-TIME (http://earthquake.usgs.gov/earthquakes/glossary.php#date) ------ LAT (http://earthquake.usgs.gov/earthquakes/glossary.php#location) ---- LON (http://earthquake.usgs.gov/earthquakes/glossary.php#location) ---DEPTH (http://earthquake.usgs.gov/earthquakes/glossary.php#depth) ---- Region (http://earthquake.usgs.gov/earthquakes/glossary.php#region)

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/10_45.php) 6.0 2012/05/20 02:03:52 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb0009tk0.php) --44.800 - 11.192--- 5.1---- NORTHERN ITALY

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/145_40.php) 6.4 2012/05/20 07:20:38 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb0009uu3.php)-- 39.727- 143.037-- 15.6--- OFF THE EAST COAST OF HONSHU, JAPAN


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-05-20.jpg

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-23_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-23.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_2012-05-23_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-24_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-24.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_2012-05-24_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-25_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-25.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_2012-05-25_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.


Refresh your browser page to get the latest traces.





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, 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 January 01, 2012. 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.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_us.jpg
Since January 1st, 2012
http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2012.jpg



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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Strongest so far (no data):

Canarian seismographs off line since 9 pm yesterday...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-26_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-26.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_2012-05-26_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Still off line...



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-27_04-05.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-27.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_2012-05-27_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Still off line... all of 'em!

Once back on line, seems like the 6.7 in Santiago Del Estero, Argentina is showing up on CHIE station although it doesn't display the usual signature of a long distance EQ; yet, no other EQs are listed around that time frame.

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/200_55.php) 3.5 2012/05/28 05:30:19 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/ak10482523.php) 52.526 -164.690 41.5 SOUTH OF ALASKA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/295_-30.php) 6.7 2012/05/28 05:07:24 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a0z0.php) -28.061 -63.077 588.0 SANTIAGO DEL ESTERO, ARGENTINA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/210_60.php) 2.7 2012/05/28 03:23:44 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/ak10482496.php) 58.358 -152.179 36.0 KODIAK ISLAND REGION, ALASKA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/120_40.php) 4.7 2012/05/28 02:22:57 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a0y2.php) 39.654 118.736 38.7 HEBEI, CHINA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/15_40.php) 4.5 2012/05/28 01:06:32 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a0xm.php) 39.917 16.159 28.4 SOUTHERN ITALY
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/210_60.php) 2.6 2012/05/28 01:02:50 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/ak10482451.php) 60.914 -151.065 18.8 KENAI PENINSULA, ALASKA





http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-28_05-06.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-28.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_2012-05-28_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-29_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-29.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_2012-05-29_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-30_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-30.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_2012-05-30_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-05-31_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-05-31.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_2012-05-31_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-01_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-01.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_2012-06-01_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

That Harmonic Tremor is now getting skinnier than a barbwire...

[Daughter of Time]

That Harmonic Tremor is now getting skinnier than a barbwire...

Thank you Amzer for your continued efforts and dedication.

That's good news.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-02_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-02.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_2012-06-02_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (1.6 at 08:51 -12Km):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-03_08-09.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-03.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_2012-06-03_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

The SOS Arlantic Explorer has been surveying the eruption area and posted the following:



https://www.facebook.com/SOS.OCEANOS.ORG/posts/317194178365483


https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/401817_422466091119469_159752430724171_1299672_1732905897_n.jpg
02/06/2012 Image probe B / O Atlantic Explorer QSTAR Oceanography. Submarine volcano La Restinga (El Hierro, Canary Islands).

The ULPGC research team is working its campaign program in the eruptive area. In the volcanic area were many small bubble jets rising to the surface. The probe has observed degassing areas, ash ...

There is also a resurgence of the number of seismic tremors affecting the island. (see diagrams at top of page)

[avid]

Worth translating the comments - still seems like mixed messages from the main folk, however - all is quiet(ish) for the time being. Thanks Amzer Zo for everything so far :-)

[Hervé]

Strongest so far (2.9 at 12:45 -17 km W. Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-04_12-13.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-04.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_2012-06-04_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

The Panama earthquakes as recorded at La Gomera:

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/280_5.php) 6.6 2012/06/04 03:15:25 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a66u.php) 5.508 -82.468 9.7 SOUTH OF PANAMA
MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/275_5.php) 6.2 2012/06/04 00:45:16 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a664.php) 5.287 -82.580 9.7 SOUTH OF PANAMA


http://www.ign.es/ign/resources/volcanologia/EGOM/imagenes_sismica/DIA/EGOM_2012-06-04.jpg

[Hervé]

Strongest so far (no data):

The wiggle at 01:11 seems to correspond to this one:

MAP (http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/315_15.php) 5.1 2012/06/05 00:35:26 (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a71t.php) 13.513 -44.876 10.0 NORTHERN MID-ATLANTIC RIDGE


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-05_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-05.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_2012-06-05_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Well, whenever they get back on line...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-06_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-06.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_2012-06-06_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

***

A big

THANK YOU !


to the more than 130,000 viewers who visited this thread!


Since July, IGN has officially logged 12,646 tremors at El Hierro... and still counting since the seismic activity is still on going!


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]

Strongest so far (no data):

Whenever the diagrams get online...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-07_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-07.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_2012-06-07_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Polly’s* latest:

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-08_00-01.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-08.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_2012-06-08_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.


Refresh your browser page to get the latest traces.





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, 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


(IGN discontinued the updating of the cumulative energy released graph)


EQ locations for the past 7 days:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_us.jpg


Location of the EQs since January 1st,2012:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2012.jpg


Since July 19, 2011
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011-2012.jpg


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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Strongest so far (no data):

Off line again...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-09_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-09.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_2012-06-09_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

News from ULPGC about the latest "Atlantic Explorer" campaign south of La Restinga:
http://www.ulpgc.es/hege/almacen/download/7097/7097354/8pdf__rov2.pdf

Oceanographic Campaign Guayota 4
El Hierro Volcano, 2 to 3 June 2012


https://public.bay.livefilestore.com/y1pb_WxMWtIqQgBUv_kiiNYweGeazLulmhziDPu7hW8rB3LboN6YwTVuS8PcbI7Ip5I6NTCsnt3Nee10z7KTh4rEQ/Image-2012-6-9-18h19mn36.jpg?psid=1

ROV3 results
Robotics and Computational Oceanography Division (IUSIANI)
Institute of Oceanography and Global Change Physical Oceanography Group (OFYGA)



1. - Echo sounder profiles


https://public.bay.livefilestore.com/y1pVWygpjZJIW0rXAWuEMWfO1-pJ93_NUad4hleKVz1s5Fy8Do7Hs3jDVKEFR0bGGqRphVi5YeDntdvmN8jwnaLeA/Image-2012-6-9-18h20mn54.jpg?psid=1
Transect WE in the southern flank of the cone (at > 140 m depth). seen 2 degassing zones, one very intense (Both at > 120 m).


https://public.bay.livefilestore.com/y1p6Yw9n4mLMRJ6RBPC8tPPpkbXcbz4oRwhEE1NsSPsrOvwonodCPHsUg9ahI4GyWuZ_RxofriikQe4ltocGdBrOA/Image-2012-6-9-18h21mn23.jpg?psid=1
Transect S-N of the crater. Impossible to report the actual depth (plume emission at 75 m). Intense degassing + ash.




2. - Ash in a downward trend. Abundant between 70 and 140 m.


https://public.bay.livefilestore.com/y1pcx87jSs7MTvHjU0PIWSsaDZmfJE1dKVP72P8esPtQcmbVYoYpArQ4SpInmgzGlBJhlVMhOdRYwGUlM4ME3yyWg/Image-2012-6-9-18h21mn59.jpg?psid=1


https://public.bay.livefilestore.com/y1p_EYF9irpD2rvg373hA7jrsbydL-iqESf23ivMMmJ3V5qHHW7eFnwhFe4k-Y2BN5mAtX5JVMqDjhwGkJJvYBzvg/Image-2012-6-9-18h22mn41.jpg?psid=1




3. - Bubbles?, big cinder?


https://public.bay.livefilestore.com/y1pIk-haHH7zfJ23WF3QJWLx_FuBrCdc1KYuGG1hG6IPHLc35PgHSim0wR10wdodJOKH-7MbUjqk7fPyhE58FQiHg/Image-2012-6-9-18h23mn14.jpg?psid=1

The image below is oriented more toward the N (cone on the right). seem to follow ballistic trajectory.


https://public.bay.livefilestore.com/y1pvHqYyvgjA-_HjYlQK7orWy4Hc9CVsytDBWqPC8uxMxYOm2TuVEI7sPRpFz7OWHDKOmfiruizg2SaPeyceMw-Iw/Image-2012-6-9-18h23mn53.jpg?psid=1




4. - Annelids (?) + Fish.



https://public.bay.livefilestore.com/y1pJlIYCKU2ImLVdqfMp8kETit22aocMZwDz3FUTiBUaIK3NwJWrb4-zMlfrRFJauylDTqGFq__-krVpKDW52zQSg/Image-2012-6-9-18h24mn30.jpg?psid=1


https://public.bay.livefilestore.com/y1pfty0xPknCPrn3EI_EiVDaIeD_z0astiRGsTvYSk4q8xsZFm9IReAdhJOhu9cB0axS5tP9G1lnHQUFxN0OFXdfw/Image-2012-6-9-18h25mn5.jpg?psid=1

[Hervé]

Strongest so far (no data):





http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-10_02-03.jpg




For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-10.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_2012-06-10_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):

Whenever they fix it...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-11_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-11.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_2012-06-11_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data): again, whenever they get back on-line...


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-12_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-12.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_2012-06-12_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

ROV video posted by ULPGC-QSTAR (see post # 2183 above):


xgesdTKW3Fc




SOS Oceanos comments on their campaign:


ROV underwater video of El Hierro volcano - 4th ULPGC-oceanographic expedition aboard QSTAR R / V Atlantic Explorer


Researchers from the School of Marine Sciences, University Institutes attached to IUSIANI (Division of Robotics and Computational Oceanography) and Oceanography and Global Change (planktonic Ecophysiology Group and Physical Oceanography and Applied Geophysics), developed by oceanographic called Guayota 4-ULPGC for the study of underwater volcano of El Hierro and oceanographic effects.


This campaign has had the collaboration of the American University RUTGERS (Jersey) and was carried on board the oceanographic vessel Atlantic Explorer (QSTAR SLU) between days 2 and 3 June 2012.


The first day a dive with an underwater robot (ROV Sirius, AGEOTEC) was made for observation and filming of the oceanographic environment of the volcanic cone also trying, as far as possible, to film the geological structures associated with the volcanic cone area.


Scientists point out that in the area of ​​the volcanic cone there is no stain in the ocean's surface, but bubbling surface areas at the coordinates of the crater, and the ROV and the ship's echo sounder recorded evident degassing zones on one flank of the volcano . At depths greater than 50-60 meters, fly ash is detected, which also appeared in samples of zooplankton (possibly removed by the heavy swell of the previous days).


Furthermore, no trace could be found in fish mortality and yes we continuously had seagulls in the surrounding areas with no apparent change (presence of coastal pelagics in the area). The presence of two different species of fish, amberjack juveniles in surface and coastal pelagic (still unidentified) attracted to light at depths greater than 120 m above the cone is recorded.


On the afternoon of June 2 there were two oceanographic stations where vertical profiles of temperature, salinity and fluorescence with a CTD (Conductivity-Temperature-Depth) were made , taking water samples at different depths with a rosette of six bottles and zooplankton sampling with a WP-2 network. The stations chosen were one located far from the volcanic cone in the southeast of the island of El Hierro for reference and the other was in the vicinity of the volcanic cone.


On June 3 a total of 9 stations CTD and rosette to obtain vertical profiles of salinity, temperature and fluorometry, in addition to water samples at different depths in the submarine volcano oceanographic environment was completed. In general, thermohaline anomalies have not seen to be relevant in the area of ​​the volcano.


It is generally observed conditions of late spring that a seasonal thermocline develops above 50 m depth at stations closer to shore with a maximum of fluorescence due to an increase in chlorophyll over 70 meters.


What I observed were bubbles of different sizes rising from the depths in the area of ​​the volcano, same as the day before that disrupted the reading of the ship's echo sounder. In the same CTD stations zooplankton from 0-200m were sampled, splitting the sample into four size classes for the study of biomass and metabolic activity of zooplankton. Also, together with CTD stations sampling the water column 0-125 meters in 3 seasons, and for the determination of chlorophyll, metabolism and carbon fluxes due to phytoplankton. In general, one could say that there is a recovery of the area, with increased phytoplankton biomass and zooplankton.


So far there have been 4 oceanographic and geological features in the region affected by the submarine volcano Restinga (El Hierro) from February 2012 to the present with the oceanographic vessel Atlantic Explorer. These campaigns are being funded largely by the University of Las Palmas de Gran Canariay and by different research groups which have been participating such as Departments of Physics, Chemistry and Biology, Faculty of Marine Sciences, Institute of Oceanography and Global Change Institute of Intelligent Systems and Numerical Applications in Engineering (IUSIANI), Research Center for Biodiversity and Environmental Management, and Marine Biotechnology Center (MBC).


In addition, institutions such as the Oceanographic Centre of Canary Islands (Spanish Oceanographic Institute), the National Research Council (CSIC), Rutgers University (USA) and researchers from other national and foreign are collaborating in these campaigns.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-13_03-04.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-13.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_2012-06-13_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (2.8 at 06:05:07, -22Km, NW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-14_06-07.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-14.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_2012-06-14_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

So far for today:


Evento#_____Date_____ (GMT)*___ Latitud__ Longitud_ Km__Mag._____Localización___Info
1148702__14/06/2012__14:17:23__27.7612__-18.0897__26__ 1.6 __ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148702','2');)

1148568__14/06/2012__07:48:40__27.8015__-18.0680__21__ 2.1__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148568','2');)
1148565__14/06/2012__06:06:20__27.7726__-18.0591__23__ 2.7__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148565','2');)
1148563__14/06/2012__06:05:07__27.7794__-18.0525__22__ 2.8__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148563','2');)
1148562__14/06/2012__06:01:52__27.7644__-18.0395__22__ 2.3___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148562','2');)
1148561__14/06/2012__05:54:22__27.8062__-18.0488__20__ 1.8__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148561','2');)
1148559__14/06/2012__05:41:04__27.7853__-18.0509__21__ 1.8__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148559','2');)
1148544__14/06/2012__05:22:16__27.7896__-18.0447__20__ 1.7__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148544','2');)
1148536__14/06/2012__05:15:10__27.7306__-18.0264__22__ 1.9__ SW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148536','2');)
1148542__14/06/2012__05:14:10__27.7519__-18.0415__22__ 1.6___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148542','2');)
1148515__14/06/2012__04:52:39__27.7834__-18.0411__24__ 1.9__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148515','2');)
1148507__14/06/2012__04:40:20__27.7481__-18.0339__20__ 2.3___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1148507','2');)


http://www.01.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1148563.gif (http://javascript<b></b>:ampliarDetalleTerremotoVolc('1148563'))

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-15_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-15.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_2012-06-15_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-16_01-02.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-16.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_2012-06-16_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-17_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-17.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_2012-06-17_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (2.3 at 22:14, -17Km, NW Frontera):




http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-18_22-23.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-18.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_2012-06-18_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (1.9 at 00:16, -15Km, NW Frontera):




http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-19_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-19.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_2012-06-19_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud__ Longitud_ -Km_ Mag.___ Localización___Info

1149595__19/06/2012__00:16:23__27.7775__-18.0410__15__ 1.9__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149595','2');)

1149544__18/06/2012__23:25:35__27.7840__-18.0369__15__ 1.8__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149544','2');)
1149529__18/06/2012__23:03:42__27.7767__-18.0534__19__ 2.1__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149529','2');)
1149526__18/06/2012__23:01:57__27.7669__-18.0475__18__ 2.0___ W FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149526','2');)
1149493__18/06/2012__22:45:02__27.7188__-18.0319__17 __1.5__ SW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149493','2');)
1149488__18/06/2012__22:14:12__27.7864__-18.0377__17 __2.3__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149488','2');)
1149486__18/06/2012__21:52:47__27.7689__-18.0419__17 __1.8__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149486','2');)
1149438__18/06/2012__18:00:35__27.8018__-18.0595__17__ 1.8__ NW FRONTERA.IHI[+] (http://javascript<b></b>:abrirEventoVolc2('1149438','2');)

[avid]

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

The earth is ringing like a bell at the moment....

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-20_02-03.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-20.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_2012-06-20_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/45(80).JPG&Width=585&Height=284&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
SPECIAL SEISMIC CRISIS - 20/06/2012 (10:06 pm)

Checking the volcano if new magma ascent is detected

DIARIOELHIERRO.ES (http://www.diarioelhierro.com/), writing (20.06.2012. 10:06 pm)

The vessel "Hesperides" of the Spanish Navy has carried out a scan on Tuesday to determine the current status of the submarine volcano of El Hierro to detect possible breakage of the seafloor from new magma ascent.

According to the Ministry of Defense in a statement, exploration has focused in the south around the volcano and in El Golfo, north of the island, where the most recent earthquakes have been concentrated.

On Tuesday, the National Geographic Institute (IGN) has identified four earthquakes, the higher intensity of 1.9 on the Richter scale whithin a month prior to that first anniversary of the first tremors known as the volcanic crisis of El Hierro.

Earthquakes led Frontera residents and of the fishing village of La Restinga, El Pinar; to be displaced on several occasions from the risk of rock falls in both the tunnel linking the town with the island's capital, Valverde, and the slopes of the mountain.

Since then the population has tried to recover the life led before the occurrence of earthquakes, but the tourism traveling to the island to explore the nature of land and, above all, its seabed, has not.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-21_03-04.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-21.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_2012-06-21_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Polly’s* latest:





Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-22_06-07.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-22.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_2012-06-22_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.


Refresh your browser page to get the latest traces.





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, 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_2011-2012.jpg




New cumulative graph starting January 01, 2012. The continuously changing scales keep 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 since January 1st,2012:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2012.jpg


Since July 19, 2011
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011-2012.jpg


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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Strongest so far (no data):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-23_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-23.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_2012-06-23_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (3.1 at 21:26, -20 Km, NW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-24_21-22.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-24.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_2012-06-24_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Strongest so far (3.8 at 09:03, -19 Km, SW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-25_09-10.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-25.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_2012-06-25_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Wooops... Polly's waking up!

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.____ Localización____Info

1150774__24/06/2012__23:54:09__27.7726__-18.0100__19__ 2.1__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150774','2');)
1150773__24/06/2012__23:48:30__27.7668__-18.0168__18__ 2.0__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150773','2');)
1150772__24/06/2012__23:46:16__27.7640__-18.0168__18__ 2.2__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150772','2');)
1150771__24/06/2012__23:36:46__27.7732__-18.0122__17__ 2.3__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150771','2');)
1150770__24/06/2012__23:35:53__27.7829__-18.0327__18__ 2.1__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150770','2');)
1150769__24/06/2012__23:30:26__27.7888__-18.0379__21__ 2.0__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150769','2');)
1150768__24/06/2012__23:28:16__27.7578__-18.0124__19__ 1.9___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150768','2');)
1150748__24/06/2012__23:14:57__27.7667__-18.0259__19__ 2.3__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150748','2');)
1150747__24/06/2012__22:00:01__27.7720__-18.0415__22__ 2.3__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150747','2');)
1150736__24/06/2012__21:34:49__27.7639__-18.0418__22__ 1.9___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150736','2');)
1150734__24/06/2012__21:28:52__27.7887__-18.0587__20__ 1.8__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150734','2');)
1150733__24/06/2012__21:27:03__27.7633__-18.0437__21__ 1.7___ W FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150733','2');)
1150722__24/06/2012__21:26:01__27.7897__-18.0642__20__ 3.1__ NW FRONTERA.IHI__[+] (http://javascript<b></b>:abrirEventoVolc2('1150722','2');)

[Hervé]

Serious increase of the Harmonic Tremor amplitude over the last hour.

Polly is definitely waking up!

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.______ Localización

1151015__25/06/2012__12:12:42__27.7222__-18.0698__19__ 3.1__ SW FRONTERA.IHI
1151022__25/06/2012__12:09:03__27.7105__-18.0762__18__ 2.9__ SW FRONTERA.IHI
1150970__25/06/2012__11:56:17__27.7010__-18.0828__20__ 2.6___ W EL PINAR.IHI
1150967__25/06/2012__11:44:27__27.7207__-18.0699__18__ 2.5__ SW FRONTERA.IHI
1150965__25/06/2012__11:18:48__27.7123__-18.0882__19__ 2.5__ SW FRONTERA.IHI
1150942__25/06/2012__11:15:04__27.7238__-18.0628__19__ 2.5__ SW FRONTERA.IHI
1150938__25/06/2012__11:11:53__27.7135__-18.0737__18__ 2.4__ SW FRONTERA.IHI
1150936__25/06/2012__11:08:15__27.7057__-18.0844__20__ 2.0__ SW FRONTERA.IHI

1150917__25/06/2012__11:07:20__28.3512__-16.2121__17__ 3.0_____ ATL-CANARIAS
1150943__25/06/2012__10:25:11__27.5676__-18.0397__11__ 2.6__ SW EL PINAR.IHI
1150933__25/06/2012__09:37:20__27.7032__-18.0900__18__ 2.5__ SW FRONTERA.IHI
1150930__25/06/2012__09:24:56__27.6966__-18.0744__18__ 2.7____ W EL PINAR.IHI
1150922__25/06/2012__09:09:40__27.7017__-18.0685__18__ 2.8____ W EL PINAR.IHI
1150860__25/06/2012__09:03:44__27.7056__-18.0741__19__ 3.8__ SW FRONTERA.IHI
1150914__25/06/2012__08:56:01__27.7084__-18.0727__18__ 2.1__ SW FRONTERA.IHI
1150910__25/06/2012__08:41:05__27.7079__-18.0669__19__ 2.9__ SW FRONTERA.IHI
1150904__25/06/2012__08:40:32__27.7050__-18.0729__20__ 2.6__ SW FRONTERA.IHI
1150900__25/06/2012__08:34:16__27.7331__-18.0706__19__ 2.7__ SW FRONTERA.IHI
1150890__25/06/2012__08:26:26__27.7305__-18.0658__19__ 2.3__ SW FRONTERA.IHI
1150889__25/06/2012__08:10:13__27.7287__-18.0620__18__ 2.6__ SW FRONTERA.IHI
1150888__25/06/2012__08:03:48__27.7141__-18.0781__19__ 2.5__ SW FRONTERA.IHI
1150887__25/06/2012__07:47:21__27.7149__-18.0806__19__ 2.5__ SW FRONTERA.IHI
1150885__25/06/2012__07:43:09__27.7227__-18.0685__19__ 2.6__ SW FRONTERA.IHI
1150869__25/06/2012__07:37:13__27.7233__-18.0838__18__ 2.4__ SW FRONTERA.IHI
1150866__25/06/2012__07:36:51__27.7190__-18.0732__19__ 2.0__ SW FRONTERA.IHI
1150865__25/06/2012__07:31:30__27.7337__-18.0812__18__ 2.1___ W FRONTERA.IHI
1150854__25/06/2012__07:11:08__27.7165__-18.0680__18__ 2.3__ SW FRONTERA.IHI
1150851__25/06/2012__06:51:35__27.7249__-18.0535__18__ 2.8__ SW FRONTERA.IHI
1150845__25/06/2012__06:47:07__27.7225__-18.0593__18__ 2.6__ SW FRONTERA.IHI
1150841__25/06/2012__06:44:22__27.7233__-18.0594__18__ 2.6__ SW FRONTERA.IHI
1150843__25/06/2012__06:35:48__27.7244__-18.0632__18__ 2.6__ SW FRONTERA.IHI
1150837__25/06/2012__06:27:09__27.7242__-18.0553__18__ 3.4__ SW FRONTERA.IHI
1150852__25/06/2012__06:14:09__27.7213__-18.0456__19__ 2.8__ SW FRONTERA.IHI
1150849__25/06/2012__06:08:50__27.7217__-18.0486__19__ 3.2__ SW FRONTERA.IHI
1150844__25/06/2012__06:02:32__27.7303__-18.0500__19__ 2.7__ SW FRONTERA.IHI
1150842__25/06/2012__05:51:01__27.7391__-18.0460__19__ 2.5__ SW FRONTERA.IHI
1150840__25/06/2012__05:41:46__27.7246__-18.0378__19__ 2.4__ SW FRONTERA.IHI
1150834__25/06/2012__05:38:43__27.7229__-18.0278__20__ 2.5__ SW FRONTERA.IHI
1150833__25/06/2012__05:29:44__27.7258__-18.0327__19__ 2.6__ SW FRONTERA.IHI
1150831__25/06/2012__05:23:31__27.7256__-18.0261__21__ 2.4__ SW FRONTERA.IHI
1150829__25/06/2012__05:23:13__27.7199__-18.0379__21__ 2.4__ SW FRONTERA.IHI
1150828__25/06/2012__05:18:13__27.7360__-18.0447__19__ 2.8__ SW FRONTERA.IHI
1150826__25/06/2012__05:12:52__27.7203__-18.0346__21__ 2.0__ SW FRONTERA.IHI
1150824__25/06/2012__05:10:37__27.7246__-18.0251__21__ 2.5__ SW FRONTERA.IHI
1150819__25/06/2012__05:01:48__27.7414__-18.0468__20__ 1.8__ SW FRONTERA.IHI
1150823__25/06/2012__04:59:56__27.7304__-18.0323__19__ 2.1__ SW FRONTERA.IHI
1150825__25/06/2012__04:57:47__27.7174__-18.0349__20__ 2.5__ SW FRONTERA.IHI
1150832__25/06/2012__04:57:13__27.7238__-18.0354__19__ 2.7__ SW FRONTERA.IHI
1150822__25/06/2012__04:56:10__27.7357__-18.0201__19__ 2.7__ SW FRONTERA.IHI
1150836__25/06/2012__04:54:04__27.7254__-18.0305__19__ 2.4__ SW FRONTERA.IHI
1150835__25/06/2012__04:51:48__27.7246__-18.0300__20__ 2.3__ SW FRONTERA.IHI
1150814__25/06/2012__04:48:33__27.7608__-18.0286__18__ 2.5___ W FRONTERA.IHI
1150821__25/06/2012__04:45:01__27.7243__-18.0358__19__ 2.4__ SW FRONTERA.IHI
1150818__25/06/2012__04:40:01__27.7330__-18.0280__20__ 2.6__ SW FRONTERA.IHI
1150812__25/06/2012__04:35:43__27.7332__-18.0401__18__ 2.0__ SW FRONTERA.IHI
1150809__25/06/2012__04:35:00__27.7259__-18.0321__19__ 1.8__ SW FRONTERA.IHI
1150805__25/06/2012__04:30:44__27.7286__-18.0434__18__ 2.6__ SW FRONTERA.IHI
1150808__25/06/2012__04:28:52__27.7237__-18.0293__19__ 2.4__ SW FRONTERA.IHI
1150811__25/06/2012__04:18:47__27.7338__-18.0362__18__ 2.5__ SW FRONTERA.IHI
1150801__25/06/2012__04:16:19__27.7277__-18.0362__18__ 3.0__ SW FRONTERA.IHI
1150803__25/06/2012__04:15:14__27.7333__-18.0361__18__ 2.9__ SW FRONTERA.IHI
1150807__25/06/2012__04:09:33__27.7298__-18.0244__20__ 2.1__ SW FRONTERA.IHI
1150806__25/06/2012__04:08:43__27.7260__-18.0283__19__ 2.6__ SW FRONTERA.IHI
1150804__25/06/2012__04:02:38__27.7193__-18.0308__21__ 2.0__ SW FRONTERA.IHI
1150802__25/06/2012__04:00:07__27.7315__-18.0322__20__ 2.4__ SW FRONTERA.IHI
1150797__25/06/2012__03:57:20__27.7222__-18.0376__20__ 2.9__ SW FRONTERA.IHI
1150799__25/06/2012__03:41:44__27.7306__-18.0268__17__ 2.1__ SW FRONTERA.IHI
1150798__25/06/2012__03:36:31__27.7328__-18.0324__20__ 2.4__ SW FRONTERA.IHI
1150796__25/06/2012__03:35:07__27.7362__-18.0285__18__ 2.5__ SW FRONTERA.IHI
1150795__25/06/2012__02:59:48__27.7422__-18.0345__22__ 3.0__ SW FRONTERA.IHI
1150792__25/06/2012__02:40:04__27.7278__-18.0256__22__ 2.8__ SW FRONTERA.IHI
1150791__25/06/2012__02:07:00__27.7305__-18.0441__22__ 2.8__ SW FRONTERA.IHI
1150790__25/06/2012__02:05:34__27.7242__-18.0214__19__ 2.7__ SW FRONTERA.IHI
1150789__25/06/2012__01:56:51__27.7204__-18.0238__20__ 2.6____ W EL PINAR.IHI
1150781__25/06/2012__01:48:05__27.7173__-18.0412__20__ 2.5__ SW FRONTERA.IHI
1150776__25/06/2012__01:46:05__27.7317__-18.0251__20__ 2.4__ SW FRONTERA.IHI

[Hervé]

GPS data for FRON (El Hierro) indicates an up trend over the past few months:


http://tenerife.todogeologia.com/download/file.php?id=1301

[Hervé]

Press Release

The PEVOLCA maintains the green semaphore and normal phase of information to the public
06/25/2012 ... 18:30 - Ministry of Economy, Finance and Security

Continues to monitor and analyze real-time data.

The Steering Committee of Civil Protection Plan for Volcanic Risk (PEVOLCA) met this afternoon in Tenerife, maintains the normal phase in green semaphore status and information to the population after an increase of seismic activity that has occurred in El Hierro since yesterday.

According to the findings of the Scientific Committee, which included INVOLCAN and IGN scientists, this is the only observable anomalous parameter, since no changes were observed in the surface deformation nor gas emissions. This seismicity occurs at a depth of about 20 km, although it began in the sea of ​​El Golfo, it has moved into the area of El Julan.

To make a correct interpretation of the process that gives rise to this seismicity, surveillance is continuing with analysis of real-time data obtained by the IGN Volcanic Monitoring System operating on El Hierro.

The Steering Committee of the Plan reminded that the official information output is from the communiqués of PEVOLCA that reflects the findings of scientists who are working directly in the study and evaluation of the data.

[Hervé]

Strongest so far (3.5 x 2 at 16:35 &16:50, -19 Km, SW Frontera & W El Pinar):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-26_16-17.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-26.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_2012-06-26_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1151672__26/06/2012__23:44:52__27.7026__-18.0975__19__ 3.3__ SW FRONTERA.IHI
1151680__26/06/2012__23:44:20__27.7182__-18.0960__18__ 2.8__ SW FRONTERA.IHI
1151690__26/06/2012__23:40:20__27.6979__-18.1007__20__ 2.6__ SW FRONTERA.IHI
1151692__26/06/2012__23:38:54__27.7053__-18.1051__18__ 2.7__ SW FRONTERA.IHI

1151663__26/06/2012__22:19:32__27.7136__-18.0934__19__ 3.0__ SW FRONTERA.IHI

1151643__26/06/2012__21:43:11__27.6873__-18.0896__20__ 3.1___ W EL PINAR.IHI
1151638__26/06/2012__20:21:19__27.6926__-18.0795__18__ 2.7___ W EL PINAR.IHI
1151635__26/06/2012__20:15:36__27.7071__-18.0765__18__ 2.6__ SW FRONTERA.IHI
1151640__26/06/2012__20:02:12__27.6938__-18.0940__20__ 2.7___ W EL PINAR.IHI
1151624__26/06/2012__19:58:06__27.6940__-18.0951__20__ 2.8___ W EL PINAR.IHI

1151597__26/06/2012__18:06:32__27.7113__-18.0934__19__ 2.6__ SW FRONTERA.IHI
1151598__26/06/2012__17:59:20__27.6881__-18.0699__19__ 3.0___ W EL PINAR.IHI
1151601__26/06/2012__17:54:12__27.6971__-18.0875__19__ 3.3___ W EL PINAR.IHI
1151600__26/06/2012__17:49:40__27.6973__-18.0971__20__ 2.7__ SW FRONTERA.IHI
1151599__26/06/2012__17:47:12__27.7128__-18.0960__20__ 2.7__ SW FRONTERA.IHI
1151595__26/06/2012__17:40:57__27.6825__-18.0917__17__ 2.6___ W EL PINAR.IHI

1151593__26/06/2012__17:39:37__27.7201__-18.1062__22__ 3.1__ SW FRONTERA.IHI
1151591__26/06/2012__17:31:57__27.6681__-18.0147__23__ 2.8__ SW EL PINAR.IHI

1151589__26/06/2012__17:04:53__27.6985__-18.0755__18__ 3.0___ W EL PINAR.IHI
1151587__26/06/2012__17:04:40__27.7241__-18.0997__20__ 2.8__ SW FRONTERA.IHI
1151568__26/06/2012__17:02:48__27.6905__-18.0903__19__ 2.8___ W EL PINAR.IHI

1151586__26/06/2012__16:50:19__27.7081__-18.1109__19__ 3.5__ SW FRONTERA.IHI
1151559__26/06/2012__16:35:57__27.6997__-18.0652__19__ 3.5___ W EL PINAR.IHI


1151594__26/06/2012__16:30:13__27.7069__-18.0775__21__ 2.7__ SW FRONTERA.IHI
1151592__26/06/2012__16:28:29__27.6956__-18.0746__19__ 3.0___ W EL PINAR.IHI
1151590__26/06/2012__16:27:52__27.7088__-18.0885__21__ 3.0__ SW FRONTERA.IHI
1151588__26/06/2012__16:24:46__27.7276__-18.0772__21__ 3.3__ SW FRONTERA.IHI

1151545__26/06/2012__15:08:31__27.7202__-18.0805__19__ 2.8__ SW FRONTERA.IHI
1151479__26/06/2012__10:40:36__27.7318__-18.0578__18__ 3.1__ SW FRONTERA.IHI
1151447__26/06/2012__08:49:07__27.7152__-18.0957__19__ 3.1__ SW FRONTERA.IHI
1151444__26/06/2012__08:39:58__27.7105__-18.0506__18__ 3.0___ W EL PINAR.IHI
1151350__26/06/2012__04:11:05__27.7201__-18.0688__19__ 3.1__ SW FRONTERA.IHI
1151344__26/06/2012__04:10:40__27.7126__-18.0524__19__ 3.1__ SW FRONTERA.IHI
1151259__26/06/2012__02:41:47__27.7162__-18.0737__20__ 3.0__ SW FRONTERA.IHI

[Matisse]

For the last few days seismic activity in Hierro has been busy, here's a good link to see what,s been happening and updates...
http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/

[Hervé]

Well. that hourly trace on post # 2210 is getting to look very familiar.

However, what's still not there, is that strip of red intensity at around 0.59 Hz which means that magma is yet to get on the move in order to see it.

[Hervé]

Where it's happening:

N-S section:

http://img208.imageshack.us/img208/3993/elhierro01a.png


E-W section:

http://img62.imageshack.us/img62/2626/elhierro02a.png


Although not indicated, it seems these diagrams are made with Vertical scale = Horizontal scale.

[Mandala]

Thanks for the constant updates Amzer Zo, it is appreciated. You are our go-to science guy. Mandala

[Hervé]

Strongest so far (4.0 at 18:55:08, -20Km, W El Pinar):

Whenever they get back online...



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-27_18-19.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-27.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_2012-06-27_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1152071__27/06/2012__21:54:43__27.6992__-18.1170__19__ 2.7__ SW FRONTERA.IHI
1152073__27/06/2012__21:52:07__27.6920__-18.1051__20__ 3.1___ W EL PINAR.IHI

1152063__27/06/2012__21:08:29__27.6949__-18.0974__20__ 2.9___ W EL PINAR.IHI

1152048__27/06/2012__20:04:06__27.6737__-18.1013__19__ 2.8__ SW EL PINAR.IHI

1152018__27/06/2012__19:26:50__27.6900__-18.1047__18__ 2.7___ W EL PINAR.IHI

1152013__27/06/2012__19:11:37__27.6896__-18.1084__19__ 3.1___ W EL PINAR.IHI

1152007__27/06/2012__18:55:08__27.6883__-18.1006__20__ 4.0___ W EL PINAR.IHI
1152012__27/06/2012__18:54:17__27.7088__-18.1046__20__ 2.8__ SW FRONTERA.IHI
1152011__27/06/2012__18:52:53__27.6887__-18.1043__19__ 2.7___ W EL PINAR.IHI

1151962__27/06/2012__14:22:25__27.6874__-18.1092__20__ 2.8___ W EL PINAR.IHI
1151961__27/06/2012__14:14:38__27.6870__-18.0964__20__ 3.0___ W EL PINAR.IHI

1151950__27/06/2012__13:12:47__27.7084__-18.1071__19__ 3.3__ SW FRONTERA.IHI

1151907__27/06/2012__10:55:07__27.6980__-18.1066__20__ 3.2__ SW FRONTERA.IHI

1151841__27/06/2012__08:27:05__27.7048__-18.1145__20__ 2.8__ SW FRONTERA.IHI

1151830__27/06/2012__08:05:37__27.6807__-18.1001__18__ 2.8___ W EL PINAR.IHI
1151823__27/06/2012__08:05:06__27.7013__-18.1078__20__ 3.2__ SW FRONTERA.IHI

1151818__27/06/2012__07:02:06__27.7072__-18.1216__21__ 2.9__ SW FRONTERA.IHI
1151806__27/06/2012__07:01:15__27.7104__-18.1156__19__ 2.9__ SW FRONTERA.IHI

1151797__27/06/2012__05:47:55__27.6975__-18.1066__18__ 2.8__ SW FRONTERA.IHI
1151801__27/06/2012__05:47:34__27.7195__-18.1200__20__ 2.9__ SW FRONTERA.IHI

1151772__27/06/2012__04:39:28__27.691__1-18.0916__19__ 2.8___ W EL PINAR.IHI

1151707__27/06/2012__02:27:12__27.6950__-18.1128__20__ 3.4__ SW FRONTERA.IHI
1151725__27/06/2012__02:11:14__27.7057__-18.0986__20__ 2.9__ SW FRONTERA.IHI

1151701__27/06/2012__00:53:05__27.7072__-18.0988__20__ 2.8__ SW FRONTERA.IHI

1151677__27/06/2012__00:11:27__27.7106__-18.0918__19__ 3.4__ SW FRONTERA.IHI
1151691__27/06/2012__00:07:02__27.6936__-18.1043__19__ 2.9___ W EL PINAR.IHI
1151689__27/06/2012__00:05:58__27.6892__-18.1124__19__ 3.0___ W EL PINAR.IHI

[Hervé]

Apparently; Prof. SAGIYA, Takeshi of the Nagoya University has come out from under Nemesio's squashing thumb and is publishing his GPS results for the Canary islands.


El Pinar:


https://public.bay.livefilestore.com/y1pvFeoitgzVLtBTgNWvPXl9V2jNgi8xzWazj_kc_G_3TD1pmL2UjUMk6MsGiwCUfyYVHt2xbXCd5MbjHgzLjnAcw/Image-2012-6-27-6h18mn55.jpg?psid=1



Frontera:


https://public.bay.livefilestore.com/y1pSkrOK6bt-IafAv524Rnvl2S1ZInXk5P9n0x0HpJYxX9_sJkH1XI0kB4SNNsg6k9occWyeW0RT88mOVQOaxopbA/Image-2012-6-27-6h22mn2.jpg?psid=1


What's that mean?


Just that El Hierro island is suddenly bulging following a slow rise during the past few months while horizontal displacements were steady null.


The data from the last few days indicate a sharp increase of all three components:


NS = North (+)-South (-)


EW = East (+)-West (-)


UD = Up (+)-Down (-)


Scale is in meters so that 0.02 m = 2 cm

[Hervé]

SPECIAL SEISMIC CRISIS - 27/06/2012 (12:42 pm)
CANARY ISLANDS GOVERNMENT IS ASSEMBLED

Detect a'' significant'' deformation of the ground and rapid movements of magma

SERGIO GUTIERREZ, Valverde (06.27.2012. 12:42 pm)
The Volcanic Instituite de Canarias (Involcan) today reported that there is a significant deformation of the ground detected on their GPS networks.

A statement issued by the Institute explains that "during the last two days there have been eastward horizontal displacement of 2 inches, of 3 inches to the north and a vertical elevation of 2 cm. These data clearly show a process of movement of magma underground much faster than those observed last year, reports the Involcan.

The source responsible for this deformation, according to Involcan, is in the center-west of the island, in the area called El Julan, coinciding with recent seismic activity.

MEETING THE GOVERNMENT CANARY
For his part, the Director General of Security and Emergency of the Canary Islands, Juan Manuel Santana, report Wednesday June 27 at 12:30 pm, the conclusions of the Scientific Committee and Director of Civil Protection Plan Volcanic Risk (Pevolca) meeting today, due to recent earthquakes that are occurring on the island of El Hierro.

The press conference will be held in room 1-1-2 CECOES crisis in Santa Cruz de Tenerife (Bravo Murillo Avenue, 5, 5 th plta.).

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/111(118).jpg&Width=635&Height=228,203125&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0

SPECIAL SEISMIC CRISIS - 27/06/2012 (14:01 pm)

Volcanic activity semaphore raised to yellow in La Dehesa and El Julan

DIARIOELHIERRO.ES, writing (06.27.2012. 14:01 pm)
The Steering Committee of Civil Protection Plan for Volcanic Risk (Pevolca) has decided this morning to raise the semaphore of information to the public to yellow in El Julan and La Dehesa, El Hierro. It also establishes the preemergence stage on alert in these areas because that is where there is more volcanic risk.

This decision is due to the increased earthquake activity occurring on the island since last Sunday. Scientists convinced the steering committee that the origin of this seismicity and the horizontal deformation observed, about 3 centimeters, can be caused by a magmatic process active at a depth of 20 kilometers.

The meeting was held by video conference between Las Palmas de Gran Canaria, with the Minister of Economy, Finance and Security, Javier Gonzalez Ortiz, Santa Cruz de Tenerife, in the presence of President of the Cabildo, the deputy representative of the Government, the general manager Security and Emergency and the scientific committee spokesman and Madrid general director of Civil Protection and Iron, in the presence of municipal and island representatives.

The Steering Committee has taken the opportunity to remind all of the recommendations of self-protection from earthquakes that once were issued and can be found on page www.gobiernodecanarias.org (http://www.gobiernodecanarias.org) / DGSE / sismo_hierro.

The Steering Committee Plan reminded that the official information is released from the communiqués of Pevolca that reflects the findings of scientists who are working directly in the study and evaluation of the data

[Hervé]

Polly’s* latest:


Strongest so far (3.5 at 18:55, -21Km, SW El Pinar):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-28_18-19.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-28.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_2012-06-28_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.


Refresh your browser page to get the latest traces.



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, 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_2011-2012.jpg




New cumulative graph starting January 01, 2012. The continuously changing scales keep 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 since January 1st,2012:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2012.jpg


Since July 19, 2011
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011-2012.jpg


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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1152425__28/06/2012__23:29:37__27.6896__-18.1219__19__ 2.8__ SW FRONTERA.IHI

1152415__28/06/2012__21:57:24__27.6857__-18.1279__20__ 2.8___ W EL PINAR.IHI

1152405__28/06/2012__20:40:40__27.7031__-18.1298__19__ 2.7__ SW FRONTERA.IHI

1152389__28/06/2012__18:55:58__27.6673__-18.1100__21__ 3.5__ SW EL PINAR.IHI

1152365__28/06/2012__15:56:43__27.6928__-18.1105__23__ 2.7__ SW FRONTERA.IHI
1152364__28/06/2012__15:55:26__27.7142__-18.0631__20__ 2.8__ SW FRONTERA.IHI
1152363__28/06/2012__15:43:05__27.6740__-18.0979__21__ 2.8__ SW EL PINAR.IHI
1152362__28/06/2012__15:38:59__27.6945__-18.1244__26__ 2.8__ SW FRONTERA.IHI

1152346__28/06/2012__15:33:23__27.7058__-18.1019__22__ 3.4__ SW FRONTERA.IHI
1152361__28/06/2012__15:23:49__27.7111__-18.1323__21__ 2.8__ SW FRONTERA.IHI
1152359__28/06/2012__15:12:28__27.6799__-18.1071__21__ 2.9___ W EL PINAR.IHI
1152358__28/06/2012__15:08:12__27.7132__-18.1168__21__ 2.8__ SW FRONTERA.IHI

1152355__28/06/2012__14:54:07__27.6905__-18.1154__19__ 2.8__ SW FRONTERA.IHI

1152299__28/06/2012__13:18:42__27.7158__-18.1157__17__ 3.2__ SW FRONTERA.IHI [upgraded]

1152281__28/06/2012__13:04:48__27.6892__-18.0926__17__ 3.0___ W EL PINAR.IHI

1152321__28/06/2012__12:51:36__27.6526__-18.1099__16__ 3.0__ SW EL PINAR.IHI

1152251__28/06/2012__10:24:49__27.6857__-18.1203__22__ 2.7___ W EL PINAR.IHI

1152216__28/06/2012__08:52:49__27.6892__-18.1394__21__ 2.7__ SW FRONTERA.IHI

1152199__28/06/2012__07:17:33__27.6731__-18.1171__18__ 2.9___ W EL PINAR.IHI

1152187__28/06/2012__06:34:08__27.7031__-18.1231__20__ 2.9__ SW FRONTERA.IHI

1152156__28/06/2012__04:42:06__27.7038__-18.1161__19__ 2.8__ SW FRONTERA.IHI

[Hervé]

For the last few days seismic activity in Hierro has been busy, here's a good link to see what,s been happening and updates...
http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/

Hi Matisse,

Welcome to Avalon!

Thanks for the link of which, we -- here, on this thread -- have long been aware of.

You see, if it weren't for Joke Volta's pictures, JDCV's videos and the occasional reader's breaking news; I would totally dismiss that site.

Why?

Although alledgedly following the El Hierro volcanic activity since the beginning, the guy, Armand, still hasn't learnt the difference between Harmonic Tremor and seismicity/microseismicity since, again, today we can read on said site:


Update 28/06 – 07:55 UTC
[...]

- Harmonic Tremor has restarted strongly since 05:35 this morning, showing us that the volcanic process is still continuing strongly. As we have experienced the last couple of days, the current HT may refer to a new migration of the epicenters

Here is what an actual, strong Harmonic Tremor looks like:

https://public.bay.livefilestore.com/y1phN6IUwhq3g8iHTHQdep4qyRZJiVow-mNUbPaDbkxzgAtO-Ba3rFCI54Hd9N7O0yH5S5iDg2sThfyszmGKl-qpw/CHIE_2011-10-10_sp.jpg?psid=1


See the red-colored horizontal strips starting around 04:15 at the bottom of the graph?

That's real Harmonic Tremor!

That's totally absent from current spectrogams, which is why I am saying that magma on the move is yet to be "seen." That is, the intensity of magmatic oscillation/resonance reaching into the red portion of the scale, not the current green to pale yellow.

In short, the guy, in my books, is fear mongering with lots of chatter and poor interpretation of data.

[Hervé]

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/3444(3).jpg&Width=600&Height=381&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
SEISMIC CRISIS SPECIAL - 06/28/2012 (8:46 pm)

An imminent eruption is not expected but there is movement of magma.

SERGIO GUTIERREZ, Valverde (06.28.2012. 8:46 pm)

As happened last year when the eruption began in the Sea of calms; it started, as now, with a succession of earthquakes in the municipality of La Frontera. Scientists are studying and analyzing the situation in El Hierro, an island recovering from being affected by a crisis that gave the impression that it was over but that seems to have revived.

However, in the press conference held by Pevolca yesterday in Tenerife, the scientific committee does not expect an imminent eruption, but notes that there is movement of magma, which has forced to increase the volcanic hazard semaphore to yellow (situation pre -emergency) in the area between the Sea of ​​Calm, the Meadow and the Verodal.

Furthermore, in the 2011 volcanic crisis, the deformation suffered by El Hierro was 5 cm in total. It has now been 3 centimeters in just two days, some data which suggest clearly the intense movement of magma that runs through the bowels of the island.

For now, the last part of Pevolca's press release of yesterday afternoon pointed out that the situation remains unchanged, although earthquakes do not stop at La Frontera and El Pinar. Since, the institutions of the island have called for populations to remain calm.

[Hervé]

Speaking of the Devil (see post # 2218 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=512719&viewfull=1#post512719))... he is now whining... :wof:

http://www.diarioelhierro.es/aspjpg/send_binary.asp?Path=D:\wadhoo01\/imagen/26496/8(44).jpg&Width=339&Height=278&Interpolation=1&sharpen=0&sharpenvalue=&Rotate=0
Nemesio Perez, director of Involcan

SPECIAL SEISMIC CRISIS - 27/06/2012 (16:36 pm)

Involcan withdraws from El Hierro for lack of resources

Nemesio Perez, warned Wednesday that a "satisfactory response'' to the needs of society from the seismic reactivation of El Hierro can not be given by lack of economic resources.

EUROPA PRESS, S / C Tenerife (27.06.2012. 16:36 pm) The director of Involcan (Instituto Volcanológico de Canarias), Nemesio Perez, warned Wednesday that a "satisfactory response'' to the needs of society from the seismic reactivation of El Hierro can not be given by lack of economic resources.

Perez has confirmed to Europa Press that the Involcan team is not physically on the Meridian Island since last April 5 due to having "exhausted" all funds for the project extracted from the European Union (EU) European volcanic risk reduction in Macaronesia (Azores, Canaries and Cape Verde).

The three-year project was due to end in July 2013 but the money ran out because it was "impossible" to have permanent presence of staff and partners on the island in order to realize volcano activities monitoring that cannot be made through permanent instrumental network since July 2011.

In addition, working to enhance the GPS network and permanent instrumental geochemistry to strengthen volcanic surveillance.

Perez reminds that Involcan was originally an institution supported by the Canarian Parliament, the Senate and House of Representatives to help improve and optimize the management of volcanic risks in the islands, but only the "commitment" of the Tenerife Chapter has guaranteed its existence.

*************************************************
Gobsmacked I am... the guy was funded by European funds but refused to publish the GPS data for anyone to see as required by European close for funding and now he is stamping the "Involcan" logo on the GPS data collected and published by Nagoya University Prof. Takeshi Sagiya! Yet he didn't do jack with said data but prevented others to do something with them.

See post # 1887 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=412184&viewfull=1#post412184) for the background story.

[Hervé]

Nemesio quits and... oh, miracle! Data reappear!

IGN GPS Data:

http://www.02.ign.es/ign/resources/volcanologia/jpg/hierro2SVVRTRF_neu.png



GPS Stations:

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

[Hervé]

Nemesio quits, and... accurate informations are leaking out...

Gobierno de Canarias
Press Release

The energy release and ground deformation show the acceleration of magmatic process.

28/06/2012 ... 12:40 - Ministry of Economy, Finance and Security

* There was an inflation process throughout the island whose center is located in the area in which the seismicity occurs.

The energy release and ground deformation show an acceleration of the active magmatic process on the island of El Hierro, according to information forwarded by the National Geographic Institute at the direction of the Civil Protection Plan for Volcanic risk (PEVOLCA).

The GPS network solution, measuring ground surface deformation on the island, shows there is a clear process of inflation, marking an apparent center of pressure in the area where the seismicity is located. The total cumulative displacement from 24 June to midnight yesterday, is about 3-4 cm in the horizontal components and [+] 4-5 centimeters in the vertical component. Also the energy released has reached a value of 4.2x10^11joules.

Since the initial phase of magmatic process, on June 24, there have been over 750 earthquakes. The earthquake with a magnitude greater than 4.0, occurred yesterday at 18:55 pm in the Sea of ​​Calm, 2 km from the coast and 20km deep.

Be reminded that the seismicity started in the El Golfo Sea and then moved to the center of the island, coinciding with the point of intersection of the ridges, and later migrated to the west. Since the mid-25th the seismicity is concentrated in an area that includes the west and the dorsal side of El Julan. From noon, on 27 June, seismicity began to migrate towards the Sea of ​​Calm.

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

Emphasis, mine.

[Hervé]

Strongest so far (3.3 at 13:11:42, -18Km, W Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-29_13-14.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-29.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_2012-06-29_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1152815__29/06/2012__23:45:19__27.6981__-18.1314__19__ 3.3__ SW FRONTERA.IHI

1152796__29/06/2012__21:22:38__27.7123__-18.1415__19__ 2.8__ SW FRONTERA.IHI
1152794__29/06/2012__21:11:46__27.6996__-18.1319__20__ 2.7__ SW FRONTERA.IHI
1152792__29/06/2012__21:06:40__27.7063__-18.0937__19__ 2.9__ SW FRONTERA.IHI
1152789__29/06/2012__21:03:39__27.6950__-18.1317__19__ 2.9__ SW FRONTERA.IHI
1152788__29/06/2012__20:59:18__27.7073__-18.1419__21__ 2.9__ SW FRONTERA.IHI
1152784__29/06/2012__20:56:15__27.7234__-18.1390__20__ 3.1___ W FRONTERA.IHI
1152783__29/06/2012__20:55:33__27.6866__-18.1151__18__ 2.9___ W EL PINAR.IHI
1152775__29/06/2012__20:46:20__27.6899__-18.1312__20__ 3.1__ SW FRONTERA.IHI
1152782__29/06/2012__20:45:25__27.7191__-18.1233__19__ 3.0__ SW FRONTERA.IHI

1152749__29/06/2012__18:55:19__27.7177__-18.1178__22__ 2.7__ SW FRONTERA.IHI

1152691__29/06/2012__13:12:58__27.7283__-18.1461__21__ 3.0___ W FRONTERA.IHI
1152695__29/06/2012__13:11:43__27.7454__-18.1435__18__ 3.3___ W FRONTERA.IHI [upgraded]
1152696__29/06/2012__13:09:39__27.6321__-18.0909__37__ 3.1__ SW EL PINAR.IHI
1152697__29/06/2012__13:07:52__27.7146__-18.1291__20__ 3.0__ SW FRONTERA.IHI
1152687__29/06/2012__13:06:19__27.7027__-18.1219__19__ 2.7__ SW FRONTERA.IHI
1152686__29/06/2012__13:03:58__27.6789__-18.1239__22__ 2.8___ W EL PINAR.IHI

1152682__29/06/2012__13:00:40__27.7183__-18.1533__21__ 3.1___ W FRONTERA.IHI

1152664__29/06/2012__12:05:09__27.6865__-18.1070__19__ 2.8___ W EL PINAR.IHI

1152590__29/06/2012__09:35:03__27.6911__-18.1234__21__ 2.8__ SW FRONTERA.IHI

1152439__29/06/2012__00:39:11__27.6661__-18.1049__17__ 3.0__ SW EL PINAR.IHI

1152436__29/06/2012__00:25:10__27.6960__-18.1099__21__ 3.1__ SW FRONTERA.IHI
1152435__29/06/2012__00:15:48__27.6617__-18.1221__20__ 2.9__ SW EL PINAR.IHI
1152434__29/06/2012__00:13:25__27.6755__-18.1336__19__ 2.7___ W EL PINAR.IHI

[Hervé]

Interesting... what appears to happen is that there are 3-6 hours long pulses of magma emplacement occurring at the moment, underneath the island, and not being ejected/erupted yet.

[Hervé]

Strongest so far (3.6 at 21:43, -20Km, W El Pinar):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-06-30_21-22.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-06-30.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_2012-06-30_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización


1153057__30/06/2012__23:58:07__27.6528__-18.1072__21__ 3.0__ SW EL PINAR.IHI

1153050__30/06/2012__23:51:06__27.6780__-18.1147__20__ 2.9___ W EL PINAR.IHI
1153048__30/06/2012__23:46:58__27.6630__-18.1217__21__ 3.0__ SW EL PINAR.IHI
1153046__30/06/2012__23:44:35__27.6830__-18.1130__20__ 2.7___ W EL PINAR.IHI

1153033__30/06/2012__21:43:42__27.6762__-18.1205__20__ 3.6___ W EL PINAR.IHI

1153032__30/06/2012__21:05:34__27.6812__-18.1069__19__ 2.8___ W EL PINAR.IHI

1152995__30/06/2012__18:29:34__27.6938__-18.1196__19__ 2.7__ SW FRONTERA.IHI

1152986__30/06/2012__17:32:32__27.6979__-18.1249__18__ 2.8__ SW FRONTERA.IHI

1152934__30/06/2012__11:52:23__27.6952__-18.1289__20__ 2.8__ SW FRONTERA.IHI

1152909__30/06/2012__10:03:22__27.7218__-18.1376__19__ 2.9___ W FRONTERA.IHI

1152901__30/06/2012__08:27:26__27.7013__-18.1531__21__ 2.7__ SW FRONTERA.IHI
1152900__30/06/2012__08:06:23__27.6925__-18.1452__20__ 3.1__ SW FRONTERA.IHI
1152898__30/06/2012__08:04:17__27.6971__-18.1354__19__ 3.2__ SW FRONTERA.IHI

1152890__30/06/2012__07:16:49__27.7014__-18.1231__18__ 3.0__ SW FRONTERA.IHI

1152882__30/06/2012__06:07:58__27.6970__-18.1250__19__ 2.9__ SW FRONTERA.IHI

1152879__30/06/2012__05:06:20__27.6699__-18.1200__19__ 3.0__ SW EL PINAR.IHI

1152862__30/06/2012__03:24:23__27.7209__-18.1331__19__ 2.8___ W FRONTERA.IHI

1152822__30/06/2012__00:16:26__27.7113__-18.1281__19__ 2.7__ SW FRONTERA.IHI

[Hervé]

Latest Nagoya U., Takeshi Sagiya' GPS solutions (http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary.html) for El Pinar and Frontera:



https://public.bay.livefilestore.com/y1pBXnVSDk8mP9WLIgDJ_XjK4P8Qc9Dkbn-8GO1Z3R3NhHpjHRHMSbokAi4IwK327-Grd--A5jeco1x27QKO2z5OA/Image-2012-6-30-7h16mn34.jpg?psid=1



https://public.bay.livefilestore.com/y1pWTVTHbIvi179MrRscaCHSPWP-VAWdkgh13M_D9HSjIgJUjOQo9sw6e7xNoO8tKCP7Iz6Ppntjcjoc2bffq1dPQ/Image-2012-6-30-7h18mn22.jpg?psid=1


The GPS network in the Canary Islands, Spain, is being operated under a collaboration of ITER, GrafCan, and Nagoya University.


Routine data analysis is automatically conducted in two ways.

1. Ultra-rapid solution (red circles)

http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary_files/bullet_ball-chrome.pngLatency: 5 hours (updated at 5:00 a.m. GMT)


http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary_files/bullet_ball-chrome.pngSatellite orbit: IGS ultra rapid
2. Rapid solution (black crosses)

http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary_files/bullet_ball-chrome.pngLatency: 2 days (updated at 6:00 p.m. GMT)


http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary_files/bullet_ball-chrome.pngSatellite orbit: IGS rapid
We use Bernese GPS software version 5.0 with IGS rapid orbit and earth rotation parameters. Several IGS sites are included in the analysis so as to refer to the ITRF2008 coordinate system. The time series data above are referring to GMAS site in Gran Canaria.
**********************************************************************
Inconsistencies between graphs legends and text on Nagoya U website (http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary.html). Graphs legends appear to be the accurate ones.
**********************************************************************

DATA:


https://public.bay.livefilestore.com/y1pgPjmT8BsBgrWQGXSNOiGFWT0-j2LvLoksAWwSD7leXtRAIFjbpLcnNStdZ8BHrxxaHfvyFiHUph3JloAasEyWg/Image-2012-6-30-8h52mn14.jpg?psid=1


POLITICS:


https://public.bay.livefilestore.com/y1pOlwG8MZViM6twDFEntYKsuDR6YqTKQPDvcW9fU3hd8gtDtkl0G-8YgQ-mfvIik9oJeLxuRmpalFrQZJglF6V5w/Image-2012-6-30-8h57mn9.jpg?psid=1

[Hervé]

If my estimation is somewhat in the ballpark, the next pulse of magma emplacement should occur within the next hour or so... let's see if Polly is gona make me lie?

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

Oh, well, so much for predictions... I guess Polly is as unpredictible as... a volcano!

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

It just took another 16 hours for the next pulse... doubled what I expected.

[avid]

thank you for all your wondrous research AmzerZo - I am with very ill parents and really need to refocus elsewhere at the moment. Just figured out how to use olde Dad's poota! Keep us posted!!! Much love and admiration from Avid xxx

[Hervé]

Strongest so far (4.0 at 10:11, -22Km, SW El Pinar)



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-07-01_10-11.jpg



For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-07-01.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_2012-07-01_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización


1153171__01/07/2012__10:11:40__27.6569__-18.1288__22__ 4.0__ SW EL PINAR.IHI
1153197__01/07/2012__09:48:39__27.6633__-18.1451__23__ 2.7__ SW EL PINAR.IHI

1153194__01/07/2012__09:38:16__27.6596__-18.1538__23__ 2.7__ SW EL PINAR.IHI
1153193__01/07/2012__09:28:30__27.6526__-18.1354__23__ 3.0__ SW EL PINAR.IHI
1153181__01/07/2012__09:16:07__27.6498__-18.1312__22__ 3.5__ SW EL PINAR.IHI
1153180__01/07/2012__09:10:12__27.6611__-18.1372__23__ 3.2__ SW EL PINAR.IHI
1153190__01/07/2012__09:06:57__27.6634__-18.1100__19__ 3.2__ SW EL PINAR.IHI
1153179__01/07/2012__09:04:13__27.6626__-18.1327__24__ 3.1__ SW EL PINAR.IHI
1153168__01/07/2012__08:45:39__27.6691__-18.1289__23__ 3.1___ W EL PINAR.IHI
1153167__01/07/2012__08:43:29__27.6705__-18.1221__21__ 2.7___ W EL PINAR.IHI

1153159__01/07/2012__08:34:17__27.6636__-18.1277__22__ 2.8__ SW EL PINAR.IHI

1153156__01/07/2012__08:28:24__27.6665__-18.1246__22__ 3.2__ SW EL PINAR.IHI

1153131__01/07/2012__04:11:22__27.6713__-18.1402__20__ 2.7___ W EL PINAR.IHI

1153123__01/07/2012__03:52:28__27.6697__-18.1114__22__ 3.1__ SW EL PINAR.IHI

1153117__01/07/2012__03:31:24__27.6689__-18.1414__21__ 2.8___ W EL PINAR.IHI

1153090__01/07/2012__02:26:51__27.6706__-18.1545__22__ 3.3___ W EL PINAR.IHI

1153074__01/07/2012__01:29:45__27.6653__-18.1431__21__ 3.0___ W EL PINAR.IHI

1153076__01/07/2012__01:05:52__27.6954__-18.1471__23__ 3.2__ SW FRONTERA.IHI

1153056__01/07/2012__00:20:14__27.7005__-18.1951__15__ 2.7__ SW FRONTERA.IHI
1153060__01/07/2012__00:15:39__27.7423__-18.2058__16__ 3.0___ W FRONTERA.IHI
1153053__01/07/2012__00:10:04__27.6573__-18.1386__12__ 2.9__ SW EL PINAR.IHI
1153061__01/07/2012__00:04:28__27.7310__-18.1641__15__ 2.9___ W FRONTERA.IHI


http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2D.jpg

[Hervé]

***


A big


THANK YOU !


to the more than 140,000 viewers who visited this thread!


Since July, IGN has officially logged 13,945 tremors at El Hierro... and still counting since the seismic activity is still on going!


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]

Nagoya's GPS solutions for Sabinosa (SABI):

http://www.seis.nagoya-u.ac.jp/sagiya/Sagiyas_Page/Canary_files/stations.png


https://public.bay.livefilestore.com/y1pJpk_-R9BplrQ2Jp6EdKfCaFW_-Rr7ujhjuSeborMaxOWGQYUVwUDa8gaT779m49WOWDTEB5Izk3SsQb-OHdVOg/Image-2012-7-1-11h17mn9.jpg?psid=1

Note: Bottom yearly scale is divided in 10th... not 12th, so that each division equals 36.5 days. Makes sense from the view point that months aren't made up of equal numbers of days. :der: :)

[Hervé]

Strongest so far (4.4 at 22:42, -19Km, SW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-07-02_22-23.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-07-02.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_2012-07-02_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Ooooopppssssssss... Polly woke up again!

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1153593__02/07/2012__23:50:48__27.7181__-18.1595__20__ 3.2___ W FRONTERA.IHI
1153592__02/07/2012__23:49:28__27.6976__-18.1455__19__ 2.7__ SW FRONTERA.IHI
1153591__02/07/2012__23:47:59__27.6931__-18.1526__19__ 3.4__ SW FRONTERA.IHI
1153589__02/07/2012__23:40:26__27.6970__-18.1430__19__ 3.3__ SW FRONTERA.IHI
1153587__02/07/2012__23:40:10__27.7146__-18.1352__19__ 3.3__ SW FRONTERA.IHI
1153585__02/07/2012__23:36:44__27.7115__-18.1491__19__ 2.9__ SW FRONTERA.IHI
1153583__02/07/2012__23:34:26__27.7104__-18.1078__19__ 2.9__ SW FRONTERA.IHI
1153581__02/07/2012__23:30:53__27.7090__-18.1529__21__ 2.8__ SW FRONTERA.IHI
1153559__02/07/2012__23:28:12__27.7029__-18.1264__19__ 3.2__ SW FRONTERA.IHI
1153547__02/07/2012__23:24:42__27.6937__-18.1448__20__ 3.4__ SW FRONTERA.IHI

1153536__02/07/2012__22:42:38__27.6982__-18.1383__19__ 4.4__ SW FRONTERA.IHI

1153538__02/07/2012__22:36:39__27.7730__-18.2152__18__ 2.8___ W FRONTERA.IHI
1153539__02/07/2012__22:35:50__27.7145__-18.1236__21__ 3.1__ SW FRONTERA.IHI
1153549__02/07/2012__22:26:34__27.6943__-18.1553__20__ 3.2__ SW FRONTERA.IHI
1153546__02/07/2012__22:25:53__27.6996__-18.1416__18__ 3.6__ SW FRONTERA.IHI
1153545__02/07/2012__22:22:03__27.6966__-18.1590__18__ 3.4__ SW FRONTERA.IHI

1153541__02/07/2012__22:14:32__27.7094__-18.1391__19__ 3.2__ SW FRONTERA.IHI
1153537__02/07/2012__22:10:45__27.7057__-18.2296__25__ 3.9___ W FRONTERA.IHI

1153528__02/07/2012__21:58:04__27.6928__-18.1450__19__ 3.3__ SW FRONTERA.IHI
1153526__02/07/2012__21:56:09__27.6899__-18.1372__18__ 3.2__ SW FRONTERA.IHI
1153516__02/07/2012__21:52:22__27.7034__-18.1516__20__ 2.9__ SW FRONTERA.IHI
1153524__02/07/2012__21:47:07__27.7210__-18.1452__21__ 3.4___ W FRONTERA.IHI

1153512__02/07/2012__21:27:13__27.7048__-18.1181__22__ 2.9__ SW FRONTERA.IHI
1153513__02/07/2012__21:23:24__27.7003__-18.1289__22__ 2.8__ SW FRONTERA.IHI

1153471__02/07/2012__14:49:49__27.6991__-18.1521__19__ 2.9__ SW FRONTERA.IHI
1153470__02/07/2012__14:37:54__27.6960__-18.1531__20__ 3.0__ SW FRONTERA.IHI
1153469__02/07/2012__14:35:53__27.6703__-18.1504__22__ 2.8___ W EL PINAR.IHI

1153456__02/07/2012__14:01:27__27.6823__-18.1415__20__ 3.2__ SW FRONTERA.IHI
1153457__02/07/2012__13:59:16__27.6997__-18.1485__19__ 2.8__ SW FRONTERA.IHI
1153452__02/07/2012__13:55:38__27.7181__-18.1698__21__ 3.1___ W FRONTERA.IHI

1153450__02/07/2012__13:50:41__27.7013__-18.1549__20__ 2.9__ SW FRONTERA.IHI
1153460__02/07/2012__13:37:01__27.6846__-18.1410__20__ 2.9__ SW FRONTERA.IHI
1153461__02/07/2012__13:27:56__27.7068__-18.1571__20__ 2.8__ SW FRONTERA.IHI
1153455__02/07/2012__13:23:57__27.6876__-18.1421__20__ 3.0__ SW FRONTERA.IHI
1153453__02/07/2012__13:22:34__27.6898__-18.1551__21__ 3.4__ SW FRONTERA.IHI
1153454__02/07/2012__13:21:46__27.6982__-18.1526__20__ 3.0__ SW FRONTERA.IHI

1153437__02/07/2012__12:51:28__27.6936__-18.1378__18__ 3.6__ SW FRONTERA.IHI

1153439__02/07/2012__12:49:38__27.7026__-18.1426__18__ 2.6__ SW FRONTERA.IHI
1153438__02/07/2012__12:47:33__27.7076__-18.1542__20__ 2.7__ SW FRONTERA.IHI

1153442__02/07/2012__12:37:13__27.7154__-18.1532__21__ 2.7___ W FRONTERA.IHI
1153441__02/07/2012__12:35:29__27.7115__-18.1509__20__ 2.7__ SW FRONTERA.IHI


http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2D.jpg

Locations for the EQs of the last three (3) days.

[Hervé]

Latest Nagoya U's GPS solutions; note the scale change:

https://public.bay.livefilestore.com/y1pbcZy5tmEWz5wRm7jwsVell5jWe2BMtkKuv7lyc_cDe-xQ0-rJ7YU01wxPaEFjbe8ww7Gr4HnAf7WsWp3JPoyXg/Image-2012-7-2-11h45mn50.jpg?psid=1

https://public.bay.livefilestore.com/y1pk4l2yoFmvGZ6J-BDoQtp2sZZDy0K6Y8IzkVucpqGgry-jQB0AcnGwo5L4BCslKe1tUSvZ39n7E6uEIzRjGD1Uw/Image-2012-7-2-11h48mn56.jpg?psid=1

https://public.bay.livefilestore.com/y1pYDt6aR_YSjYEatY-eMW5W_QDXOpETcHVpf7bGmZ1JfMsWj29zQMeubPh19lfCYduvPsmTxvnNXclo55p7Rv5tg/Image-2012-7-2-11h52mn47.jpg?psid=1

https://public.bay.livefilestore.com/y1pfWekB18J9DmsYzMDjeLoGkYHEMtJzynEZFl_8FpDqpIfCnEyZihykKB0nTVAEMbVgTE88hOSvbnBQgkjxOSELg/Image-2012-7-2-11h50mn24.jpg?psid=1


In short, there is quite a high-volume magma pump at work down there!

[Hervé]

Well... no snooze for Polly tonight!

Check bottom of previous page.

[Hervé]

Polly’s* latest:

Strongest so far (4.2 at 02:31, -21Km, SW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-07-03_02-03.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-07-03.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_2012-07-03_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.


Refresh your browser page to get the latest traces.





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, 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


GPS solutions from IGN
http://www.02.ign.es/ign/resources/volcanologia/jpg/hierro2SVVRTRF_neu.png
(IGN discontinued the updating of the cumulative energy released graph)


EQ locations for the past 7 days:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_us.jpg


Location of the EQs since January 1st,2012:
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2012.jpg


Since July 19, 2011
http://www.02.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_2011-2012.jpg


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


* : Polly was so named from the “polycephalic snake” look of the initial cumulative energy graph (see post # 327 (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=319217&viewfull=1#post319217)).
The name became most appropriate when the eruption from multiple mouths/vents/cones/heads started to develop.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1154052__03/07/2012__23:48:06__27.7067__-18.1540__20__ 2.8__ SW FRONTERA.IHI

1154050__03/07/2012__23:45:01__27.6909__-18.1716__20__ 2.9__ SW FRONTERA.IHI
1154049__03/07/2012__23:43:04__27.6991__-18.1632__21__ 2.8__ SW FRONTERA.IHI

1154043__03/07/2012__22:50:09__27.6721__-18.1753__20__ 2.8__ SW FRONTERA.IHI

1153998__03/07/2012__19:19:25__27.7073__-18.1604__20__ 3.0__ SW FRONTERA.IHI
1153997__03/07/2012__19:15:18__27.7123__-18.1642__19__ 2.8___ W FRONTERA.IHI

1153985__03/07/2012__17:38:45__27.6878__-18.1551__20__ 2.9__ SW FRONTERA.IHI

1153973__03/07/2012__14:34:53__27.6908__-18.1607__21__ 2.8__ SW FRONTERA.IHI
1153976__03/07/2012__14:26:11__27.6910__-18.1631__19__ 2.7__ SW FRONTERA.IHI
1153975__03/07/2012__14:17:42__27.6835__-18.1808__21__ 2.7__ SW FRONTERA.IHI

1153972__03/07/2012__14:11:36__27.7083__-18.1487__19__ 2.7__ SW FRONTERA.IHI
1153970__03/07/2012__14:09:39__27.7093__-18.1559__18__ 2.9__ SW FRONTERA.IHI
1153956__03/07/2012__14:05:31__27.7063__-18.1488__18__ 3.1__ SW FRONTERA.IHI

1153953__03/07/2012__14:02:22__27.6879__-18.1572__21__ 3.3__ SW FRONTERA.IHI
1153951__03/07/2012__13:58:53__27.6981__-18.1723__21__ 3.2__ SW FRONTERA.IHI
1153961__03/07/2012__13:57:57__27.6951__-18.1514__20__ 2.8__ SW FRONTERA.IHI
1153960__03/07/2012__13:54:29__27.6970__-18.1601__20__ 3.4__ SW FRONTERA.IHI

1153954__03/07/2012__13:49:00__27.6919__-18.1602__21__ 2.7__ SW FRONTERA.IHI
1153925__03/07/2012__13:47:53__27.6910__-18.1635__21__ 3.8__ SW FRONTERA.IHI
1153952__03/07/2012__13:47:14__27.7126__-18.1574__19__ 3.0__ SW FRONTERA.IHI

1153923__03/07/2012__13:39:35__27.6900__-18.1499__20__ 2.8__ SW FRONTERA.IHI

1153883__03/07/2012__11:27:39__27.7069__-18.1437__21__ 2.9__ SW FRONTERA.IHI

1153785__03/07/2012__09:12:57__27.7005__-18.1369__20__ 2.7__ SW FRONTERA.IHI

1153782__03/07/2012__09:11:06__27.6829__-18.1289__18__ 3.2___ W EL PINAR.IHI
1153904__03/07/2012__09:05:31__27.6881__-18.1280__18__ 2.7__ SW FRONTERA.IHI

1153772__03/07/2012__08:39:33__27.7070__-18.1480__20__ 2.9__ SW FRONTERA.IHI
1153774__03/07/2012__08:32:03__27.7176__-18.1395__19__ 2.7__ SW FRONTERA.IHI

1153754__03/07/2012__06:53:56__27.6883__-18.1514__19__ 3.0__ SW FRONTERA.IHI

1153747__03/07/2012__06:47:00__27.6858__-18.1480__19__ 2.9__ SW FRONTERA.IHI

1153741__03/07/2012__05:17:24__27.6881__-18.1507__20__ 3.3__ SW FRONTERA.IHI

1153711__03/07/2012__04:02:25__27.7074__-18.1560__20__ 2.8__ SW FRONTERA.IHI

1153671__03/07/2012__03:26:53__27.6999__-18.1470__20__ 2.9__ SW FRONTERA.IHI

1153667__03/07/2012__03:00:32__27.6905__-18.1630__16__ 2.8__ SW FRONTERA.IHI
1153704__03/07/2012__02:56:40__27.7103__-18.1480__21__ 2.7__ SW FRONTERA.IHI

1153629__03/07/2012__02:42:54__27.7157__-18.1022__23__ 2.7__ SW FRONTERA.IHI
1153673__03/07/2012__02:39:50__27.6914__-18.1526__22__ 3.1__ SW FRONTERA.IHI
1153649__03/07/2012__02:31:02__27.6882__-18.1693__21__ 4.2__ SW FRONTERA.IHI
1153640__03/07/2012__02:29:54__27.6940__-18.1524__21__ 3.8__ SW FRONTERA.IHI

1153622__03/07/2012__02:29:16__27.7070__-18.1600__21__ 3.4__ SW FRONTERA.IHI
1153651__03/07/2012__02:28:32__27.7123__-18.1472__20__ 3.0__ SW FRONTERA.IHI

1153653__03/07/2012__02:28:24__27.7242__-18.1578__20__ 2.9___ W FRONTERA.IHI
1153621__03/07/2012__02:26:51__27.6869__-18.1416__20__ 3.8__ SW FRONTERA.IHI

1153661__03/07/2012__02:23:02__27.6995__-18.1315__20__ 2.9__ SW FRONTERA.IHI

1153604__03/07/2012__01:08:02__27.6643__-18.1375__21__ 2.7__ SW EL PINAR.IHI

[Mandala]

Thanks again Amzer Zo. Quite a bit of activity.

[Hervé]

Polly's definitely not joking anymore!

[Hervé]

Strongest so far (3.3 at 00:07, -19Km, SW Frontera):


http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-07-04_00-01.jpg


For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-07-04.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_2012-07-04_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.

[Hervé]

Evento#_____Date_____ (GMT)*__ Latitud___ Longitud -Km_ Mag.___ Localización

1154364__04/07/2012__23:30:19__27.6821__-18.1710__21__ 3.0__ SW FRONTERA.IHI

1154322__04/07/2012__20:11:45__27.7109__-18.1586__20__ 2.8__ SW FRONTERA.IHI

1154308__04/07/2012__17:33:01__27.6942__-18.1541__20__ 2.7__ SW FRONTERA.IHI

1154209__04/07/2012__10:59:51__27.6876__-18.1508__20__ 2.8__ SW FRONTERA.IHI

1154210__04/07/2012__10:34:02__27.6633__-18.1424__21__ 2.9__ SW EL PINAR.IHI

1154091__04/07/2012__00:53:50__27.6750__-18.1591__21__ 2.8___ W EL PINAR.IHI

1154060__04/07/2012__00:08:12__27.6719__-18.1590__18__ 3.1___ W EL PINAR.IHI
1154064__04/07/2012__00:07:52__27.6667__-18.1345__19__ 3.3__ SW FRONTERA.IHI

1154067__04/07/2012__00:05:12__27.6641__-18.0997__20__ 2.8__ SW EL PINAR.IHI

[Hervé]

Strongest so far (3.4 x 2 at 10:03 & 10:13, -20 & -18Km, SW Frontera):



http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/HORA/CHIE_2012-07-05_10-11.jpg
For the day: :
http://www.ign.es/ign/resources/volcanologia/CHIE/imagenes_sismica/DIA/CHIE_2012-07-05.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_2012-07-05_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.


Refresh your browser page to get the latest traces.



See top of page for the other auto-updating diagrams.