El Hierro

[jand]

OT video of Etna erupting yesterday.


Eruzione Etna 2013 (03/04/13) - Parte 1 Pedara

[jand]

Part 2.

Eruzione Etna 2013 (03/04/13) - Parte 2 Pedara

[jand]

Smithsonian/USGS Weekly Volcanic Activity Report 27 March-2 April 2013

New Activity/Unrest

HIERRO Canary Islands (Spain) 27.73°N, 18.03°W; summit elev. 1500 m

On 18 March seismic activity at El Hierro sharply increased. Earthquakes were initially located around the NW tip of the island, at about 20 km depth, then later migrated W about 12-15 km offshore W of El Hierro Island, at similar depth. About 100 earthquakes of Mb 3.5 (body wave measurement) or greater had been located, many of them felt by residents. The biggest events occurred on 29 March (Mb 4.7) and 31 March (Mw 4.6, moment magnitude) both at 20 km depth. IGN's GPS data showed inflation of the island, with maximum deformation at the westernmost station of about 10 cm in the horizontal component and about 11 cm in the vertical. Deformation rates reached a maximum during 23-24 March. An increase in carbon dioxide flux was observed in the W area.

Rockfalls were reported on the steep slopes, especially during 26-29 March. On the evening of 27 March the Plan de Protección Civil por Riesgo Volcánico (PEVOLCA) raised the Volcanic Alert Code for the population to Yellow, and closed the access to the W part of the island.

Geologic Summary. The triangular island of Hierro is the SW-most and least studied of the Canary Islands. The massive Hierro shield volcano is truncated by a large NW-facing escarpment formed as a result of gravitational collapse of El Golfo volcano about 130,000 years ago. The steep-sided 1500-m-high scarp towers above a low lava platform bordering 12-km-wide El Golfo Bay, and three other large submarine landslide deposits occur to the SW and SE. Three prominent rifts oriented NW, NE, and south at 120 degree angles form prominent topographic ridges. The subaerial portion of the volcano consists of flat-lying Quaternary basaltic and trachybasaltic lava flows and tuffs capped by numerous young cinder cones and lava flows. Holocene cones and flows are found both on the outer flanks and in the El Golfo depression. Hierro contains the greatest concentration of young vents in the Canary Islands. Uncertainty surrounds the report of an historical eruption in 1793.

Source: Instituto Geográfico Nacional (IGN)

http://www.volcano.si.edu/reports/usgs/

[jand]

Quieter day today although IGN have scaled CHIE back so smaller Earthquakes wont show on this list.



1203927 04/04/2013 00:39:25 27.7688 -18.1433 16   2.5  4  W FRONTERA.IHI
1203968 04/04/2013 05:06:30 27.7468 -18.2152 22   2.4  4  W FRONTERA.IHI
1203966 04/04/2013 05:14:08 27.7780 -18.2598 22   2.3  4  W FRONTERA.IHI
1203965 04/04/2013 05:15:57 27.7275 -18.2781 24   2.6  4  W FRONTERA.IHI
1203972 04/04/2013 05:21:05 27.7453 -18.4527 36   2.0  4  ATLÁNTICO-CANARIAS
1203971 04/04/2013 05:23:08 27.8123 -18.3362     1.3  4  ATLÁNTICO-CANARIAS
1203969 04/04/2013 05:23:55 27.7504 -18.2967 24   2.2  4  W FRONTERA.IHI

1204000 04/04/2013 06:42:00 27.7025 -18.2227 28   0.6  4  W FRONTERA.IHI
1204115 04/04/2013 14:08:49 27.7236 -18.2432 17   3.2  4  W FRONTERA.IHI


http://www.02.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-04-04&estacion=CHIE&Anio=2013&Mes=04&Dia=04

[jand]

Has been fairly quiet over the last couple of days .

Video of El Hierro.

POR EL HIERRO Y CON EL HIERRO

[jand]

Congratulations to El Hierro the Volcano on winning the best online photo competition by Nasa Earth Observatory.

THE SUBMARINE volcano of del MAR DE LAS CALMAS elected the best 2012 photography in the online NASA contest Earth Observatory ... Now siiiiiiiiiii! This online contest began on March 4 with 32 images, and, after successive eliminatory phases we arrived last week to the final pairing to choose the best photograph of 2012. You will recall that in the end the choice was between an virtual animation from aerial photographs of a glacier of Antarctica and the real image of the stain of the submarine volcano in the Mar de las Calmas taken February 10, 2012. The majority vote was for "our volcano", everyone!..., and AVCAN wants to congratulate and give the most sincere congratulations to all and each of the voters, who have put their bit of volcanic sand to finally locate frontline information worldwide, at least for a few weeks, to the island of the iron thanks to your volcano! CONGRATULATIONS!!!!! http://earthobservatory.nasa.gov/Vote/grid.php http://earthobservatory.nasa.gov/Vote/ http://earthobservatory.nasa.gov/ https://www.facebook.com/NASAEarthObservatory (Luis)

[jand]

The energy graph is rising again.

http://www.avcan.org/sismica/graficas/G2449.jpg?t=1365435430

[jand]

Earthquakes so far for today they seem to have changed direction.


1205093 10/04/2013 00:36:36 27.9275 -18.2696 0.8 4 NW FRONTERA.IHI

• info
  1205092 10/04/2013 00:36:53 27.7569 -18.0526 10 0.6 4 W FRONTERA.IHI
• info
  1205144 10/04/2013 01:05:34 27.8609 -18.1386 1.2 4 NW FRONTERA.IHI
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  1205147 10/04/2013 01:41:54 27.8650 -18.1601 0.6 4 NW FRONTERA.IHI
• info
  1205148 10/04/2013 01:46:26 27.8363 -18.1475 12 0.8 4 NW FRONTERA.IHI
• info
  1205149 10/04/2013 02:00:55 27.8920 -18.2026 4 0.7 4 NW FRONTERA.IHI
• info
  1205152 10/04/2013 04:45:38 27.8301 -18.2222 15 1.3 4 NW FRONTERA.IHI
• info
  1205158 10/04/2013 05:54:45 27.7325 -18.2276 15 1.9 4 W FRONTERA.IHI
• info
  1205156 10/04/2013 06:10:21 27.7003 -18.1770 21 2.0 4 SW FRONTERA.IHI
• info
  1205177 10/04/2013 06:56:54 27.8689 -18.1949 11 1.6 4 NW FRONTERA.IHI
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  http://www.avcan.org/index.php?m=AVCANmaps&a=catMedida&f1=10%2F04%2F2013&f2=10%2F04%2F2013&m1=0&m2=9&p1=0&p2=9999&s=2&z=0&e=0&h1=00%3A00&h2=23%3A59&externo=0&zi=0

[jand]

,,Declares the green traffic light in the normal phase location of early warning, given that the process earthquake volcanic continues

SANTA CRUZ DE TENERIFE, 10 Apr. (EUROPA PRESS)-

The Steering Committee of the Plan of Civil protection from risk volcanic of the community autonomous Canaries (Pevolca) has decided, at a meeting held this morning, suspend civil protection measures taken on March 27 on the island of El Hierro to the gradual decline of the values of seismic activity, deformation and presence of gases.

In this sense, the direction of the Pevolca has declared the green traffic light in normal situation of pre-alert phase, given to process earthquake volcanic continues and the research on it, according to a note from the Directorate-General of security and emergencies of the Canary Islands should be.

This means that it re-opens the tunnel rail of Los Roquillos close to the slope at the exit of the border; on the stretch of road between the junction table and Sabinosa HI-50, and traffic on the access road to Playa La Madera is permitted.

Since the beginning of this new series have been located around 2.325 events, the largest of which are magnitude 4.9 recorded on March 31 at the 10.59 hours (UTC); in recent days the process has experienced a low seismic activity, as from 5 April is not located any event of magnitude greater than 3.0, and it has been established the stability or reduction of deformations.

On the other hand, the diffuse emission of carbon dioxide rate has been reduced from April 1 to the atmosphere by El Hierro Island volcanic system. Until yesterday it had decreased from 1,824 tons daily to 1,475 tonnes per day.

On the other hand, the director of the Pevolca Committee has expressed his satisfaction for the recognition of best picture of the year of the NASA image of the underwater eruption of El Hierro in the year 2011, giving greater visibility to the island which has been affected by this phenomenon, very attractive from the scientific point of view,,

http://www.europapress.es/islas-canarias/noticia-pevolca-suspende-medidas-proteccion-civil-disminucion-sismicidad-hierro-20130410140908.html

[jand]

The last earthquake although small the epicentre was on land.

1205197 10/04/2013 09:09:36 27.7168 -18.1700 17   2.7  4  BORDER W.IHI

• info
  1205238 10/04/2013 12:46:12 27.7092 -18.1983 21   2.2  4  BORDER W.IHI
• info
  1205261 10/04/2013 15:12:05 27.7356 -18.1057 11   1.0  4  BORDER W.IHI
• info
  

[jand]

Another article on El Hierro will need to be translated.

http://earth-of-fire.over-blog.com/article-el-hierro-nouvelle-crise-sismique-et-intrusion-magmatique-116666603.html

[jand]

..A large volcano with seven cones.

The last mapping of the volcano in La Restinga throws that, in addition to the main Cone, it is 87 meters from the surface, has other six secondary cones. This is one of the scientific results of the first campaign in the iron of the Vulcan project, developed by scientists from several agencies on Board of the ship Ramón Margalef's IEO.
The underwater eruption that occurred on the island of El Hierro October 10, 2011-March 5, 2012 has stopped opposite the village of La Restinga an enormous mountain of volcanic material and six smaller ones. The main cone has a height which exceeds the 500 meters and rises to 1.8 kilometers from the coast and 87 meters under the surface of the sea. Earth towards other six secondary cones rise, moreover, most small.
Bathymetry made by members of the hydrographic Institute of the Navy on Board of the ship of the Institute Spanish of Oceanography (IEO) Ramón Margalef during the first campaign of the project Vulcan which concluded last Saturday, which is also shows the existence of a major casting, explained Eugenio Fraile, the researcher of the Oceanographic Center of the Canary Islands of the IEO, who directs the projectIt gives a measure of the scale of the eruption.
The researchers of the hydrographic Institute of the Navy have been responsible of producing animation in three dimensions in which can be seen clearly underwater volcano cone morphology. This is also the first time that 3D images are obtained not only zone eruption, but of all the seabed of the island from 75 up to 2,000 meters of depth.
This has allowed, explained Eugenio Fraile, topografiar all the seabed herreño and initially determine that "there has been no variation since it concluded the eruption or in any other point of the island" and that, therefore, «scientific evidence backed only there was an eruption at La Restinga». The structures that were found elsewhere, as against the Orchilla lighthouse, where the team of the volcanic Canary Islands Institute (Involcan) said that there was another eruption, "they are not of volcanic origin", confirms Fraile.
The previous bathymetry became in December 2012, but now is when the seven cones of La Restinga has been clearly..

http://www.canarias7.es/articulo.cfm?id=297462

[jand]

Pevolca may have to meet once more. This has been felt around the island.

http://www.01.ign.es/ign/head/volcaSenalesDiasAnterioresHora.do?nombreFichero=CHIE_2013-04-11_15-16&estacion=CHIE&Anio=2013&Mes=04&Dia=11&tipo=1&hora=15-16

[jand]

It was a 4.1 mb.

1205547 11/04/2013 15:26:36 27.7303 -18.2737 19  Sense  4.1  4  BORDER W.IHI

[jand]

ORBERTO CHIJEB | Santa Cruz de Tenerife

After nearly a week without that occur earthquakes that exceed three degrees on the Richter scale, so that the Pevolca decided on Wednesday withdraw from the island of El Hierro the yellow traffic light in Civil protection, today, the 16.26 hours El Hierro population has once again feel an earthquake, after reaching a magnitude of 4.1 degrees on the Richter eslaca, according to the web site of the national geographical Institute (IGN).

This earthquake was located in the West of the municipality of Frontera, at sea, and 19 kilometers deep. The Pevolca already warned that in El Hierro earthquake-volcanic process continues.

The island has recorded this Thursday 3 earthquakes between magnitude 2.5 and 4.1 degrees on the Ricther scale.

http://www.diariodeavisos.com/hierro-vuelve-temblar-2/

[jand]

The last EQ a 2.1 the epicentre was right over the area near Tanganasoga.


1205579 11/04/2013 17:03:19 27.7346 -18.0704 12     2.1  4  SW BORDER.IHI



http://www.01.ign.es/ign/layoutIn/volcaDetalleTerremotos.do

[jand]

http://www.colgando.com/?v=4aVwrqnCSom

[jand]

Map of the latest earthquakes two of them directly on land near the El Julan ridge and Tangangasoga.

http://www.avcan.org/index.php?m=AVCANmaps&a=catMedida&f1=11%2F04%2F2013&f2=12%2F04%2F2013&m1=0&m2=9&p1=0&p2=9999&s=2&z=0&e=0&h1=00%3A00&h2=23%3A59&externo=0&zi=0

[jand]

Interesting video of the eruption in La Palma at the end of October 1971.

http://www.rtve.es/alacarta/videos/el-escarabajo-verde/escarabajo-verde-ciclo-volcanico-3-erupcion-del-teneguia/1300100/

[jand]

Nothing really to report really over the last couple of days has been fairly quiet with smaller earthquakes.

Interesting article :

,,The archaeological site of the Maipés de Agaete will be complemented with the coffee house, to open next summer, and an interpretation centre of the tsunami that reached to the Valle de Agaete 800,000 years ago and whose traces are visible in the vicinity of the own site, as announced yesterday the insular culture, Larry Álvarez, counselor and the accidental Mayor of AgaeteMaría del C

According to the research of French and Spanish geologists, a volcanic collapse in the Tenerife town of Güímar caused a tsunami that reached the coast of Gran Canaria in fifteen minutes and reached a height of 90 meters. According to those scientific calculations, the wave came up three kilometers through the Valley in just three minutes. The first theories about this phenomenon date back to 1934, finding marine remains in the interior of the Valley and are confirming with investigations of volcanologist José Carlos Carracedo. The white spots on the slopes surrounding the Maipés are proof.armen Rosario,,


http://www.laprovincia.es/gran-canaria/2013/04/16/efectos-tsunami-valle-agaete/525881.html

[TripleH]

Hi jand. Just thought I wouold pop in and say hello..."Hello"

[jand]

Still fairly quiet on the earthquake front this was posted yesterday:

Translated

,, According to IGN, offering a total of 23 quakes have posted during the last week. The largest Quake reached 2.7 and there are no reports have been felt by the population. The depths continue varying between 19 and 11km and locations are very scattered mostly in front of Orchilla marine zone.

The deformation shows no clear trends and overall remains stable or shows very slight changes in the last week.

During the last few days there were some landslides in steep areas of the island. VC has learned there have been changes in the coloration of the water in one of the galleries located in the vicinity of La Restinga and some fish died in the pond that collects its water. The IGN technicians are already analyzing this anomal,,


http://www.volcanesdecanarias.com/index.php?option=com_content&view=article&id=286%3Aactualizaciones-abril-2013-seguimiento-actividad-isla-de-el-hierro&catid=118&Itemid=122&lang=es

[jand]

Hello Triple H hope you are well.

[jand]

Good morning to all... Today has already registered the IGN five, four to the West of iron and one very near the underwater volcano of the Mar de las Calmas 19 km of depth...These :

1208218 23/04/2013 02:35:58 27.7438 - 18.2250 13 1.2 4 W border.IHI

1208219 23/04/2013 02:43:50 27.8082 - 18.2583 11 1.0 4 BORDER W.IHI

1208220 23/04/2013 04:51:25 27.6003 - 18.0324 19 1.6 4 SW EL PINAR.IHI

1208221 23/04/2013 04:52:54 27.8448 - 1.2 18.1951 4 NW FRONTIER.IHI

1208222 23/04/2013 05:25:41 27.8058 - 18.2363 13 1.1 4 BORDER W.IHI (Translated by Bing)

9 hours ago · Like · 3..

Maite Segador 1208225 23/04/2013 07:24:23 28.2665 -16.8560 2.0 4 SW SANTIAGO DEL TEIDE.ITF no ponen la profundidad......En Tenerife

www.facebook.com AVCAN

[Paddster]

Hi jand,your name caught my eye as i was scrolling down - you're still at it ! LOOL.....Hope you're well  Do u live on Fuerte ? I'm curious ?

[jand]

033. SPECIAL NOTE OF TRACKING THE PROCESS SISMOVOLCANICO OF THE ISLAND OF IRON. (26/04/2013 - 23:30 h Kuwait, Spain 22:30, 21:30 h Canarias. http://www.avcan.org/?m=Mapas&a=mapa&mf=5781 the truth is the continuous seismic activity indicating that a dispersion of efforts in the area affected by the last swarm and some sites more, at the moment all distributed, although not focused, that some shallow follow indicandola existence of a possible point of emission to the West of the island)the last of today, very close to one of these areas. At the moment everything still indicating that the system is still there...


http://www.avcan.org/?m=Mapas&a=mapa&mf=5781

[jand]

,,And finally, the evolution of the seismic energy released accumulated that tells us that the system remains there, with a behavior more or less lines and some ups and downs these past few days and it seems that he wants to return to the sierra (volcanic behavior) will see, because it is early for nothing.(Enrique,,

http://www.avcan.org/sismica/graficas/G2489.jpg?t=1367008225

(translated from the Facebook page of Avcan)

[jand]

OT but  amazing video of Etna recently erupting.

https://www.youtube.com/watch?v=VvINiu-qPns&feature=player_embedded

[jand]

1209158 28/04/2013 15:06:53 27.7241 -18.2609 18   2.6  4  W FRONTERA

1209159 28/04/2013 15:07:12 27.7000 -18.2577 15   2.6  4  W FRONTERA



http://www.avcan.org/index.php?m=Mapas&a=mapa&mf=5646

[jand]

Today the strongest EQ for a while.

30/04/2013 04:04:42 27.7626 -18.3694 12 3.4 mbLg W FRONTERA.IHI


http://www.geo.ign.es/ign/layoutIn/sismoDetalleTerremotos.do?evid=1209340&zona=1