El Hierro

jand · March 29, 2013, 20:55:34 PM

Another one over 4mg.

1202231 29/03/2013 19:52:18 27.7104 -18.3035 21 4.1 mbLg ATLÁNTICO-CANARIAS

jand · March 29, 2013, 20:58:05 PM

Just posted on the Avcan Facebook Page,

,,Fall the website ign mysteriously after the earthquake, less evil than in this newspaper can tell us the Islanders almost in real time. Something weird happens because two European centres have detected two earthquakes of 4.5 in two different locations: the GFZ detected an earthquake of 4.5 in 18. 16W 27. 74N 21 km of depth at 17:01:22 UTC-9, and the Centre Sismologique Euro-Mediterranean another 4.5 in 18. 34W 27. 62N at 17:01:19 UTC to 5 miles deep!.! If there are simultaneous earthquakes structures of buildings may suffer much more than with seismic waves that come from a single address, I do not understand that do the authorities that do not warn the population or not to review the effects on buildings. The thing is to start worrying, the end will come the Wolf and will we catch short of preventive measures, to compensate for the excesses of the previous Eruption (UME, units, tv, etc). 29/03/2013 18:25:14 "Aka: Ingenieropreocupado,,

jand · March 30, 2013, 06:31:50 AM

Another day begins.

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-03-30&estacion=CHIE&Anio=2013&Mes=03&Dia=30

jand · March 30, 2013, 06:35:23 AM

1202328 30/03/2013 00:15:39 27.6449 -18.2505 17 2.4 4 W EL PINAR.IHI
1202326 30/03/2013 00:19:35 27.7365 -18.2873 19 2.6 4 W FRONTERA.IHI
1202318 30/03/2013 00:20:48 27.6973 -18.2560 19 2.7 4 W FRONTERA.IHI
1202316 30/03/2013 00:22:47 27.7197 -18.2861 17 2.5 4 W FRONTERA.IHI

1202296 30/03/2013 00:30:35 27.7071 -18.2866 19 4.3 4 W FRONTERA.IHI

1202361 30/03/2013 00:33:57 27.6647 -18.2372 14 2.5 4 SW FRONTERA.IHI
1202362 30/03/2013 00:36:20 27.6706 -18.2567 16 2.4 4 SW FRONTERA.IHI
1202364 30/03/2013 00:38:30 27.6679 -18.2983 15 2.0 4 SW FRONTERA.IHI
1202365 30/03/2013 00:43:10 27.7580 -18.3185 2.4 4 ATLÁNTICO-CANARIAS
1202354 30/03/2013 01:05:33 27.7898 -18.1776 27 2.5 4 W FRONTERA.IHI
1202372 30/03/2013 01:53:10 27.7238 -18.1711 23 2.1 4 W FRONTERA.IHI
1202370 30/03/2013 01:58:42 27.8232 -18.2612 28 1.9 4 W FRONTERA.IHI
1202368 30/03/2013 02:00:55 27.7173 -18.2537 17 2.0 4 W FRONTERA.IHI
1202369 30/03/2013 02:08:28 27.7444 -18.2248 25 1.6 4 W FRONTERA.IHI
1202367 30/03/2013 02:15:20 27.7651 -18.2812 16 2.7 4 W FRONTERA.IHI
1202366 30/03/2013 02:23:51 27.6598 -18.2329 15 1.9 4 SW FRONTERA.IHI
1202371 30/03/2013 02:40:56 27.6482 -18.2527 18 1.5 4 SW FRONTERA.IHI

jand · March 30, 2013, 06:38:27 AM

202389 30/03/2013 04:12:25 27.7340 -18.2764 18 3.9 mbLg W

202405 30/03/2013 04:33:34 27.7351 -18.2738 18 4.0 mbLg W FRONTERA.

1202426 30/03/2013 04:51:20 27.7092 -18.2547 19 3.6 4 W FRONTERA.IHI

1202434 30/03/2013 05:04:18 27.6924 -18.2807 20 -1 4.2 4 W FRONTERA.IHI
info

jand · March 30, 2013, 06:39:53 AM

Comment from the Avcan Facebook page.

It seems that he is is confirming the rotation of the swarm towards Southeast. Following the trend of the coordinates most likely earthquakes, yet many in the West coordinate - 18.30 will continue but that increase elo number of earthquakes more Southeast at 27, 68-18, 22 to later in few days follow the shift to 27, 61-18, 22 (sw pine forest).

http://www.01.ign.es/ign/resources/volcanologia/jpg/Eventos_HIERRO_15D.jpg

jand · March 30, 2013, 07:18:42 AM

Fifi if you find anything please would you post it or update anything important I have missed. Thanks

fifi · March 30, 2013, 09:57:02 AM

I think you have it all covered there Jand. Here is an article from Canarias7. http://translate.google.ie/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&eotf=1&u=http%3A%2F%2Fwww.canarias7.es%2Farticulo.cfm%3Fid%3D296466&act=url

jand · March 30, 2013, 18:56:32 PM

This has just been posted on the Avcan facebook page waiting for official confirmation.

.. no tendra importancia pero por ri las moscas lo reporto. grandes manchas de medusas en las costas d Fuencaliente y un gran pez como de 20 kh muerto flotando. seguro nada que ver pero no obstante lo cuento vale?

shall have no importance but by ri flies reported it. large stains of jellyfish in coastal d Fuen caliente and a great fish as 20 dead kh floating. do safe nothing to do but nevertheless story it worth?

I am sure I remember from the past that the jellyfish before were attracted to the ocean around El Hierro because of the higher sea temperatures.

jand · March 30, 2013, 18:58:19 PM

A quiet period since 11:00 this morning.

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-03-30&estacion=CHIE&Anio=2013&Mes=03&Dia=30

jand · March 30, 2013, 19:28:47 PM

Interesting read.

,,

Abstract – Ocean island volcanoes frequently develop local rift zones associated with flank movement
and flank collapses. The ocean island El Hierro grew by coalescence and collapse of three volcanic
edifices, which are an elongated topographic ridge (the Southern Ridge) and two semi-circular volcanic
cones (Ti˜nor volcano, El Golfo volcano). During edifice growth and volcano coalescence, eruption
fissures nucleated into rift zones that developed a complex triangle pattern. In scaled analogue
experimentswe could successfully reproduce the geometry of rift zones and unstable flanks as observed
on El Hierro. The experimental results suggest that the rift configuration on El Hierro is the result of
gravitational volcano spreading over deformable basal substrata, rather than of deep-seated magma
updoming as thought previously. This paper elucidates the importance of the basal substratum and
gravitational spreading, and the relationship to rifting and flank instability on El Hierro Island, and
may help in understanding similar volcano architectures elsewhere,,

The full report can be read on :

http://volcanotectonics.de/reprints/Muenn_et_al_2006.pdf

jand · March 30, 2013, 19:52:33 PM

http://rsta.royalsocietypublishing.org/content/364/1845/2009.full#sec-1

jand · March 30, 2013, 22:07:43 PM

EMSC have done a special report on El Hierro.

Seismic activity in El Hierro, Canary Islands, March 2013

Last update: 29 March 2013 at 14:57 UTC

..On March 18th, 2013, the seismicity around El Hierro Island in the Canary Islands, has started to increase siginificantly. In 10 days, more than 470 earthquakes have been reported by the IGN (Instituto Geografico Nacional, Madrid, Spain) to the EMSC. Among them, 158 M3+ earthquakes and 13 M4+ earthquakes. At least four of these earthquakes have been felt by the population.

The seismicity seems to have migrated a bit South-West since the beginning of the sequence.

Real time information about this seismic sequence is available on IGN website:

http://www.ign.es/ign/resources/volcanologia/HIERRO.html

jand · March 30, 2013, 22:22:18 PM

Earthquakes since 17:00.

1202555 30/03/2013 17: 08: 47 27.7469 -18.2893 20 2.5 4 W FRONTERA.IHI
1202562 30/03/2013 17: 18: 19 27.7401 -18.2847 19 2.5 4 W FRONTERA.IHI
1202564 30/03/2013 17:24:40 27.7213 -18.2750 20 2.4 4 BORDER W.IHI
1202565 30/03/2013 17:25:29 27.7234 -18.3021 21 2.5 4 ATLANTICO-CANARIAS
1202566 30/03/2013 17:32:11 27.7156 -18.2784 20 2.6 4 BORDER W.IHI
1202567 30/03/2013 17:58:56 27.7056 -18.2867 19 2.7 4 BORDER W.IHI
1202571 30/03/2013 18:28:38 27.8006 -18.0404 18 2.0 4 NW FRONTIER.IHI
1202575 30/03/2013 18:50:33 27.7138 -18.2686 20 3.0 4 BORDER W.IHI
1202577 30/03/2013 19:04:28 27.7694 -18.0526 21 2.3 4 BORDER W.IHI
1202624 30/03/2013 19:39:05 27.7183 -18.2747 19 3.0 4 BORDER W.IHI
1202645 30/03/2013 20:26:36 27.7108 -18.2635 19 2.8 4 BORDER W.IHI
1202647 30/03/2013 20:31:04 27.7135 -18.2828 20 2.6 4 BORDER W.IHI
1202646 30/03/2013 20:57:12 27.7263 -18.2684 19 2.8 4 BORDER W.IHI

jand · March 31, 2013, 07:15:08 AM

..021. SPECIAL NOTE PROCESS TRACKING VOLCANIC EARTHQUAKE ON THE ISLAND OF IRON. (31/03/2013 - 5:50 h kuwait - Canary Islands 3:15, 2:15 h UTC) The system stabilizes and continues with his break and now the seismicity is not concentrated but it is dispersing efforts, but due to the inertia of all that entered yesterday and antesdeayer is not surprising that it follows the seismic activity. A note, deep Seismicity in the area of the Gulf, could indicate input of new material or tensions in the inlet line, we will see... In what refers to the accumulated seismic energy release, today is going much more laying, simply is putting tension of the pressure that there is down there, could have some earthquake isolated pressurization or regain a new intrusion that awakens, although also it is possible we are on the way that relaxes..

Enrique Avcan

http://www.avcan.org/?m=Mapas&a=mapa&mf=5656

1202758 03/31/2013 05:58 03/31/2013 04:58 2.7 ATLANTICO-CANARIAS
1202763 03/31/2013 05:49 03/31/2013 04:49 2.9 BORDER W.IHI
1202747 03/31/2013 04:53 03/31/2013 03:53 3.5 SW BORDER.IHI
1202752 03/31/2013 05:19 03/31/2013 03:19 3.6 ATLANTIC
1202742 03/31/2013 03:50 03/31/2013 02:50 2.8 BORDER W.IHI
1202739 03/31/2013 03:19 03/31/2013 02:19 2.7 BORDER W.IHI
1202717 03/31/2013 01:38 31/03/2013 00: 38 2.9 ATLANTICO-CANARIAS
1202723 03/31/2013 01:38 31/03/2013 00: 38 2.6 ATLANTICO-CANARIAS
1202718 03/31/2013 01:33 31/03/2013 00: 33 2.5 NW FRONTIER.IHI

jand · March 31, 2013, 09:21:27 AM

Map of the earthquakes so far for today.

http://www.avcan.org/index.php?m=AVCANmaps&a=catMedida&f1=31%2F03%2F2013&f2=31%2F03%2F2013&m1=0&m2=9&p1=0&p2=9999&s=2&z=0&e=0&h1=00%3A00&h2=23%3A59&externo=0

jand · March 31, 2013, 12:27:22 PM

1202861 31/03/2013 10:59:54 27.7110 -18.2727 20 -1 4.9 4 W FRONTERA.IHI

Lots of reports on the Avcan Facebook page that there are strong movements on the island and people on La Palma are reporting feeling tremor.

Se noto en la palma,Los Llanos De Aridane,la cama se movió :SI notice in la palma, Los Llanos De Aridane, the bed moved: S (Translated by Bing)

14 minutes ago · Like · 3..

Elsa M Guadarrama en tigaday todavía siento vibrar.... estas vibraciones de abajo a golpe arriba.. k mal joer...
12:05 sigue el balanceoin tigaday still feel vibrate... these vibrations below to hit up... k bad joer... 12:05 continues rolling (Translated by Bing)

14 minutes ago via mobile · Like · 10.

Julia Sisi Parrondo En Los Mocanes se cayeron objetos pequeños en las estanterías. Con el cambio horario me hago un lío, qué hora debo poner en el formulario del IGN?

In Los Mocanes fell small objects on the shelves. With the time change, I am a mess, what time should I put in the form of the IGN? (Translated by Bing)

14 minutes ago · Like · 7

Daniel Arteaga En sc de la palma tambien 12:01See Translation

jand · March 31, 2013, 12:28:23 PM

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-03-31&estacion=CHIE&Anio=2013&Mes=03&Dia=31

jand · March 31, 2013, 12:40:26 PM

Whasap de un amigo: "Dos leñazos de bastante intensidad en La Grama. Sacudidas en la casa y crandes crujidos en el tejado.

Whasap from a friend: "two leñazos of enough intensity in the grass. Shakes House and crandes crackles on the roof.

Buenos días, sentido en Breña Alta-La PalmaGood morning, Alta-La Palma Breña sense (Translated by Bing)

12 minutes ago via mobile · Like · 4..

Solveida Martin Quintero Jesus fue como cuando pones la mano en una lavadora que empieza a centrifugar ,pues igual

Jesus was like when you put the hand in a washing machine that starts to spin, then equal (Translated by Bing)

12 minutes ago · Like · 5..

Paz Álvarez corto y fuerte en norte del Hierro

short and strong in North of Hierro (

www.facebook.com Avcan

jand · March 31, 2013, 12:45:21 PM

Felt in La Gomera aswell.

Sentido en Valle Gran Rey/Gomera

Felt in Valle Gran Rey/Gomera

jand · March 31, 2013, 12:49:52 PM

Comment by an islander just posted.

Buenos días, este 4.9 me hace recordar la crisis del año 2011 (imposible de olvidar), las medidas y despliegue tomadas en esa crisis (UME, bomberos, protección civil, etc...), cuando se esperaba un 4.6 como mucho, cerraron el túnel, evacuaron diferentes zonas, una de ellas parte de mi pueblo Las Puntas (sobretodo por el peligro de los desprendimientos), y ahora parece que están a la mano de dios, la sismicidad cada vez más fuerte, más desprendimientos, y cada vez menos INFORMACIÓN...tendremos que esperar que la consejera llegue de sus vacaciones (esquiando en no sé dónde), el presidente por Madeira, mientras la isla sigue vibrando cada vez más...en fin...

Good morning, this 4.9 makes me remember the crisis of the year 2011 (impossible to forget), taken in that crisis measures and deployment (UME, firemen, civil protection, etc...), when we expected a 4.6 as much, they closed the tunnel, they evacuated different areas, one of them part of my people the ends (especially because of the danger of landslides), and now seems to be the hand of God, increasingly strong seismicity, more landslides, and increasingly less information... will have to wait to get your Vacation Counselor (skiing in I do not know where), the President for Madeira, while the island still vibrates more and more... Finally

jand · March 31, 2013, 12:52:28 PM

2013-03-31 11:18 UTC
- The situation might be changing with the strongest earthquake not of today but for the past years, a M4.9! At 20km depth and W FRONTERA, at sea.
- We are receiving reports of strong shacking also at the island La Palma.
- Shacking reported by many people around the island.
- The biggest danger with the earthquake was rockfall and many has been report. This images just in from Guillermo from the North side of the island.

www.earthquake-report.com

jand · March 31, 2013, 12:59:01 PM

recorded a tremor of 4.9 degrees

SANTA CRUZ DE TENERIFE, 31 Mar. (EUROPA PRESS)-

Iron has registered the 10.59 hours a tremor of 4.9 degrees that has been felt by the population, the largest that has been produced on the island since the beginning of the underwater volcanic eruption in 2011, according to data from the network of volcanic surveillance of the national geographical Institute (IGN).

The quake, with its epicenter in the sea, occurred 20 kilometers deep to the West of the municipality of border, as well as the majority of reported tremors since seismic intensification occurs on the island.

Just an hour before, the island because it had registered the 09.40 hours another quake of 4.5 degrees, which was also felt by the population. Until then, 41 earthquakes had been posted. The strongest, 3.5 degrees on the Richter scale, took place the 03.53 and the 06.04 hours. The two, with its epicenter in the sea, moved to the Southwest and West of border, some 18 kilometers deep.

Of shocks that have been recorded during the night, ten exceeded the 3 degrees of magnitude, the rest has ranged between 2 and 3 degrees, and only five have been below 2 degrees. The latter, 2.8, has been recorded in the sea to the 08.12 hours west of border, 17 kilometers deep.

Yesterday Saturday arrived in the island until 118 earthquakes, including one that reached the 4.3 degrees to 00.30 hours and another produced the 05.04 4.2 hours, being the only ones which were felt by the population.

The direction of the Plan of Civil protection by volcanic risk in the Canary Islands (Pevolca) maintains the yellow traffic light at seismic risk part of the island and the limited circulation in races that may be exposed to rockfall due to shocks

http://www.europapress.es/islas-canarias/noticia-hierro-registra-temblor-49-grados-mayor-comenzo-erupcion-volcanica-submarina-2011-20130331132349.html

jand · March 31, 2013, 13:06:57 PM

Ha sido como una bomba.....todavía siguen cayendo piedras por encima de La Breña. Me gustaría saber dónde ha sido y a qué profundidad, porque la magnitud.......la conocemos, la hemos sentido en toda la boca.

It was like a bomb... yet still fall stones above La Breña. I wonder where it has been and to what depth, because the magnitude... know it, have felt it in the mouth.

www.facebook.com Avcan

duncolm · March 31, 2013, 13:32:52 PM

This is a great photo of one of the rockfalls.

( Photo by Nieves Cortes,
borrowed from the ongoing update page at earthquake-report.com )

jand · March 31, 2013, 14:10:17 PM

Thank you for posting the photo there are more sorry I do not know how to post them please post any more you may find .There is also now a video aswell.

jand · March 31, 2013, 20:05:39 PM

Tomorrow, Monday, the Scientific Committee of the Plan of Civil protection by volcanic risk (PEVOLCA) will meet to discuss the parameters of the phenomenon of volcanic earthquake that is being developed to the West of the island of El Hierro.
During the last 24 hours the movements have been located west of Orchilla, between 15 and 20 kilometers of depth approximately 15 kilometres from the coast.
During yesterday was recorded a minimum growth of deformations both in vertical and the horizontal components with the same trend as in previous days. Maximum deformation reaches a cumulative value of about 11 inches. The values of CO2 emissions into the atmosphere by volcanic island El Hierro building exceed the normal range of values.

It should be noted that there has been an earthquake with a magnitude of 4.9, which caused some landslides on the island, mainly in areas that are closed and was felt in other islands like Tenerife, according to the information gathered by the Chamber of CECOES 1-1-2 in the day.

Faced with this situation the PEVOLCA maintains civil protection measures taken last Wednesday at iron given the magnitude of the seismic activity, that they are as follows:
* Will disable the tunnel rail closest to the slope at the exit of the border; the closure of the stretch of road between the junction table and Sabinosa HI 50 and the access road to Playa La Madera, of the Pozo de la Salud to the confluence with the HI-503. It is important to avoid transit through these areas because of the risk of landslides.

* Remain open access to the Ermita de Los Reyes and el Sabinar in the southern area, HI 400
* Is maintained by both the yellow traffic light of information for the population in the area bounded by the HI 500 at the height of the Pozo de la Salud to the South, at the confluence of the 500 HI HI 400 at the intersection known as El Tomillar.

The address of the PEVOLCA would like to remind that in real time of the phenomenon and constant monitoring is becoming so that any change in the characteristics of the movements that involve risk would communicate immediately. Also recommended to take into account the advice of self-defense in the event of earthquakes, known by all, and that can be consulted in
http://www.gobiernodecanarias.org/dgse/descargas/sismo_hierro/autop_sismo.pdf.

http://www.gobcan.es/noticias/index.jsp?module=1 & page = note. htm & id = 152928

jand · March 31, 2013, 20:12:48 PM

Rockfall at El Hierro after M4.9 Earthquake - 31st March 2013

jand · March 31, 2013, 20:15:34 PM

2013-03-31 19:20 UTC
- To our surprise, this morning first strong earthquake has been revised by IGN to M4.9 (from M4.6), thats a lot stronger than initially said BUT it must have erroneous as in the meanwhile IGN has changed it again to M4.5.
- The Typo Mag from the stronger M4.9, now revised to M4.6, has been changed from 4 to 5. this means another Magnitude scale (Mw or Moment Magnitude). The Mw scale is used for stronger earthquakes all over the world.

2013-03-31 18:41 UTC
- Pevolca, the group who is overlooking if special safety measures are needed, will meet tomorrow. They are following up all events closely.
- Continuous micro quakes the last 4 hours. Something peculiar, which we cannot explain, can be seen on the seismogram below. Micro-seismicity decreased massively at 08:00 UTC. At 09:42 the first powerful earthquake occurs. This quake was again followed by very few micro*quakes until the strong M4.6. The graphs shows from then on renewed micro-seismicity (small vertical lines). Micro-seismicity are weak earthquakes which are also volcanic earthquakes with limited energy but NOT listed on the IGN list

2013-03-31 16:50 UTC
- We bring you a map showing the elevation of the island by the magma pushing from below. The strongest elevation is shown at western side, Orchilla, the island has rised by more than 11cm.!
- Created with data from IGN graphs of deformation in a collaboration between Nahúm Méndez Chazarra and Julio del Castillo Vivero. Click image to see in High Resolution

www.earthquake-report.com

jand · March 31, 2013, 20:23:47 PM

..The IGN validates the earthquake of 4.9 on El Hierro, the strongest so far

The national geographical Institute (IGN) has confirmed that the earthquake that occurred this morning in El Hierro at 10:59 hours (local) had a magnitude of 4.9 degrees on the Richter scale,

the largest registered in the island since the beginning of this process sismovolcanico, in the summer of 2011.

For a few hours, IGN had reduced the magnitude of the shock on its website to 4.6 degrees, using a different calculation method (Mw: magnitude time), but has finally decided to keep the 4.9 degrees obtained with the same method that has been pursuing so far in the seismic series of El Hierro (mbLg: magnitude from the amplitude of the Lg phase), as explained to Efe sources of the General direction of emergency de Canarias.

This earthquake, which took place 10 hours 59 minutes 54 seconds (local time), had its epicenter in the sea to the West of the municipality of Frontera, at the point where most of the earthquakes of the last days are concentrated.

The focus of the quake, also felt in La Palma and Tenerife, was 20 kilometers deep and occurred little more than one hour after it had place another tremor of magnitude 4.5 and after two days of low-intensity magma on the previous days.

Until the shock of 4.9, 53 small earthquakes were recorded, of which 23 had a magnitude of between 2 and 3 on the Richter scale, 13 less than two and 17 over 3 (only two exceeded the magnitude 4, one of 4.5 and another 4.6).

The President of the Council of El Hierro, Alpidio weapons, told Efe that the earthquake has caused some landslides on the road to Sabinosa, in La Dehesa and caused a small stone to fall in an area close to the quay of La Restinga.

The traffic light of volcanic risk is in the yellow part of the island, in the area bounded by the HI-500 race at the height of the Pozo de la Salud to the South, at the confluence of the HI-500 with the HI-400, at the crossroads of El Tomillar..

http://gomeraverde.es/not/34909/el_ign_revalida_el_seismo_de_4_9_en_el_hierro__el_mas_fuerte_hasta_la_fecha/