El Hierro

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jand

#3090
June 30, 2012, 10:31:52 AM
There has been another cm of uplift in the island over the last day .


http://www.seis.nagoya-u.ac.jp/sagiya/canary_gps/FRON.pdf


volcanocafewordpress.com

fifi

#3091
June 30, 2012, 11:07:58 AM Last Edit: June 30, 2012, 11:11:16 AM by fifi
El Hierro 'grows' by 5cm due to fresh magma . 

Island Connections articles.
Scientists on El Hierro say the island has grown taller by 5cm as a result of the latest seismic activty, which has generated large amounts of magma underneath the surface.


- 29.06.2012 - Fears continue to grow that an eruption could take place in the near future, following another 60 tremors yesterday. The head of the island's Cabildo, Alpidio Armas, has courted controversy by expressing his hope that an eruption will occur on land instead of undersea because it 'would attract many tourists' to see the spectacle.

     ...............

28.06.2012 - Hundreds of tremors have been recorded on the island since the week-end, some of them measuring a worrying 4.0 on the Richter Scale. The population has been urged to take precautions, including keeping a suitcase packed should evacuation be ordered, in case the situation worsens. As last year, the volcanic activity comes as El Hierro is preparing for the summer tourism season.

jand

#3092
June 30, 2012, 11:19:17 AM
DISCLOSURE NOTICE INVOLCAN During the last 4 days to confirm the registration of a horizontal shift to the Northeast (4.8 cm) and a shift in the vertical (elevation of 4.5 cm) in the GPS station located at City Hall PINA treatment El Pinar. These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro coinciding with the recent seismic activity data. The movements recorded during the last 4 days are real and much faster than those observed last year 2011. From January to June 2012 were recorded displacements of less importance, but still significant, the GPS stations located in Valverde (VALV to the east), La Frontera (WNBF, uprising) in the Restinga (REST, to the southeast and elevation), in El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446

jand

#3094
June 30, 2012, 11:31:38 AM
Fifi

Everything is so different whats happening now .

I really cant keep up with everything at the moment there are so many different sites to look at and you can find so many different points and issues that are being brought up all the time.

I have never seen the ign graphs look as they are now the pressure that is building is so worrying (and for the record that is a fact and can be checked and seen  on any of the recent ign graphs).

The island is inflating at a rapid rate aswell I really dont know where all this is going to lead.

jand

#3095
June 30, 2012, 11:35:38 AM

NOTE SPECIAL AVCAN - EVOLUTION OF THE SWARM EARTHQUAKE-VOLCANIC ISLAND OF HIERRO - 17 - 06 30, 2012.On the map of seismicity of updated today, we 49 earthquakes, and form ball earthquake-volcanic swarm follows there, Greens looks pretty good, it indicates that continuous intrusion of magma and therefore that the continuous pressurization advancing. The recent stronger earthquakes, some 3.0 degrees are located in the center of this intrusion (in red) (Henry)...http://www.avcan.org/Mapas/AVCAN3489.jpg?d=1341048933Earthquakes of June 30, 06: 00 to 12: 00 h - red (7)Earthquakes of June 30, 00: 00 to 06: 00 pm - dark green (42)

http://www.avcan.org/mapas/AVCAN3489.jpg?d=1341048933

www.facebook.com   AVCAN



















   









jand

#3096
June 30, 2012, 12:00:01 PM
Video posted on you tube of aerial views of the coast line of El Hierro .

VOLANDO SOBRE CANARIAS - LA RESTINGA - EL PINAR - EL HIERRO

SurfJames

#3097
June 30, 2012, 12:08:29 PM Last Edit: June 30, 2012, 12:12:50 PM by SurfJames
Something clearly different this time, is the movement of the island surface, both horizontally and vertically.

It's amazing that this can be detected, when you consider that the magma is so deep - 17 - 25 km down.

Are there any signs of harmonic tremors jand?

'June 29, 2012 – CANARY ISLANDS - Following days of almost continual earthquakes, residents of the small Canary island of El Hierro are once again living in fear of a volcanic eruption as their island begins to lift. According to the National Geographic Institute of Spain, increases in seismic activity on the island has seen literally hundreds of earthquakes, known as a swarm, shaking the island and gradually increasing in strength since June 25. Around 750 earthquakes have been recorded although few have been strong enough to be felt by the residents until the last two days. The island has been placed on yellow alert by the security committee in charge of operations as the earthquakes increase. The largest so far was registered at 4.0 on the Richter scale on Wednesday June 27. More frightening for the approximately 10,000 residents is the fact that a bulge has developed in the island, lifting it five centimeters in four days. Whereas the volcanic activity of 2011 was based out at sea, this time the magma appears to be forming right underneath the island and the pressure is building. Scientists on the island are using the position of the earthquake epicenters to try and work out where the magma from the volcano will come to the surface. The longer it takes to find a vent, the more the pressure from the magma will grow and the larger any possible eruption is likely to be. Earthquake Report says that PEVOLCA (Civil Protection from Volcanic Risk) has said that there is acceleration in the flow of magma, with a "clear process of inflation." –Digital Journal'

SurfJames

#3098
June 30, 2012, 12:16:55 PM
Update 29/06 – 10:43 UTC
- A reader tells us that the INVOLCAN is ready to stay at El Hierro for another 30 days. They will pay the expenses out of their own pockets. An El Hierro resident has offered to house the Involcan people ....
- 56 earthquakes so far today
- The epicenters of the latest 12 earthquakes seem to concentrate around the lighthouse area (on or off the coast). Depths are gradually shallower in a concentrated area, which means that magma is gradually infiltrating in upper layers.

jand

#3099
June 30, 2012, 12:51:07 PM
Quote from: SurfJames on June 30, 2012, 12:16:55 PM
Update 29/06 – 10:43 UTC
- A reader tells us that the INVOLCAN is ready to stay at El Hierro for another 30 days. They will pay the expenses out of their own pockets. An El Hierro resident has offered to house the Involcan people ....
- 56 earthquakes so far today
- The epicenters of the latest 12 earthquakes seem to concentrate around the lighthouse area (on or off the coast). Depths are gradually shallower in a concentrated area, which means that magma is gradually infiltrating in upper layers.

This is totally unbelievable and disgusting at the same time and hats off to the staff at Involcan for offering their services free.

jand

#3100
June 30, 2012, 15:10:24 PM
This has been posted by Patrick on volcanocafewordpress.com and again its unbelievable that the islanders seem to be having to take control of things themselves.

,,German blogger Manfred Betzwieser, running a special blog about El Hierro, spent the whole day yesterday in the "yellow alert area" of El Julan and La Dehesa. Beside some locals and a spanish couple he couldn't find any other persons. What he found were some instruments which he asks his readers to identify:
http://1.bp.blogspot.com/-cl0TbzA-cRA/T-7BJzZ1pEI/AAAAAAAAGL4/PJ-gyTnr0GA/s1600/DSCF1739.JPG
What could that be?

However, the most interesting thing is the following: After talking a bit with a local, Manfred was invited into his house were he was shown a self-built seismograph: http://2.bp.blogspot.com/-wX0gwPX1e7I/T-7DL5lZ6wI/AAAAAAAAGMU/Qx84EAyQZMQ/s1600/DSCF1620.JPG
The slightest movement makes the bell ring. Once cannot trust the local politicians or Pevolca, the local said to Manfred.

The blog is german only, however maybe google can help you with the translation: http://elhierro1.blogspot.de/,,

jand

#3101
June 30, 2012, 15:16:51 PM
Update 29/06 – 12:30 UTC
- Involcan reported that the Mobile analysis unit HI01 hasn't noticed changes in CO2 values
- ER reader Ecco commented below that our deformation graph was outdated (published by Involcan a couple hours ago). We checked it and found that Ecco is right. The Ultra Rapid upward deformation is nearly 6 cm at Prof.  Sagiya  Frontera station, a serious increase vs the last couple of days (see picture below). If you click on the image, you will be linked with the latest deformation graph which includes also the horizontal deformation. (Thank you Ecco)

The graph can be viewed on www.earthquake-report.com

jand

#3102
June 30, 2012, 19:08:15 PM
This is a good link its a blog of a German man on El Hierro so you are reading actual events as they happen.

http://elhierro1.blogspot.de/

It is in German will need to be translated.

jand

#3104
June 30, 2012, 21:11:28 PM
The seismic activity of the magmatic process is stable and there is an increase of deformation


30-06-2012... 14: 39 - Ministry of economy, finance and security

The total accumulated value of energy reaches a value of 5.6x10 Joules (11)

The seismic activity of the active magmatic process on the island of El Hierro is maintained in parameters similar to that recorded in the last two days, as is clear from the information transmitted this morning by scientists from the National Geographic Institute (IGN) to the direction of the Civil Protection Plan by volcanic risk (PEVOLCA).

In the last 24 hours, the seismicity has been localized into a wide surface, slightly more to the West than the day before and from the afternoon tends to concentrate. This area is located to the West of the island, and includes Western the Julan and the Mar de Las Calmas, although one of the earthquakes were located in the area of El Golfo.

So far have been located more than 1,100 earthquakes, 144 of which are of magnitude greater than 2.7. The depth of the earthquakes located in this series staying around the 20 km., not continues is migrating to the surface. Also, the seismic energy released in the past 24 hours is less than in previous periods and its total accumulated value reaches a value of 5.6x10 (11) joules.

The GPS network of the IGN, which measures the values of surface deformation in the island, records that this continues to grow at a similar rate as the previous day, both the vertical and the horizontal components, marking an apparent Center of pressure in the Mar de las Calmas. The total cumulative displacement from the June 24 and up to 24 hours of the day on 29 June, is about 5 cm. in the horizontal components and up to 6 cm. in the vertical component.

For the Involcan scientists "these data of deformation that we are studying, not noticeable to people, confirms the movement process of magma under the island of El Hierro, whose source is in the Central-Western part of the island of El Hierro in coincidence with seismic activity data." Displacements from the June 24 are much faster than those observed last year 2011 ".

http://www.gobcan.es/noticias/index.jsp?module=1&page=nota.htm&id=149669

jand

#3105
June 30, 2012, 22:04:54 PM
Sí lo he visto Pilar, pero no se ve el mapa, qué pena. Está éste tambien: 1152993 30/06/2012 18:16:35 27.7058 -18.1301 16 1.8 mbLg SW FRONTERA.IHI


Yes I've seen pillar, but don't see the map, what a shame. It is this also: 1152993 06 30, 2012 18: 16: 35 27.7058 - 18.1301 1.8 16 mbLg SW border.IHI (Translated by Bing)

The earthquakes are getting shallower now at only  15km deep.

fifi

#3106
June 30, 2012, 23:21:39 PM Last Edit: June 30, 2012, 23:24:48 PM by fifi
Another strong earthquake 3.6. The main difference being that this time it moved furniture and knocked things off the shelves in peoples houses. They must be really worried now. I feel sorry for them all. I really do.

   30/06/2012 21:43    3.6    W EL PINAR.IHI

fifi

#3107
June 30, 2012, 23:45:36 PM
One of the Islanders statements badly translated

Everything that happens, always next to the herreño neighbors still attentive without being at home. I remember live the tertemoto of Santa Cruz in 1989, was 5.4 and prolonged... quite longer than 10 seconds. At home threw some books and objects... with this I want to say that I'm surprised that one of 3.6 has the same effect... or is poorly measured my head does not understand anything... (They suspect that the IGN is not listing the earthquakes properly....is it any wonder after the way that they have been treated?)

Another one of the Islanders has said that it is shattering the windows in La Restinga also

jand

#3108
July 01, 2012, 00:01:23 AM
Some are saying this quake was also felt in Tenerife.

According to a statement on AVCAN the 3.6M EQ was widely felt on El Hierro and by some people on Tenerife. I was not one of them.
https://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446


fifi

#3109
July 01, 2012, 00:03:48 AM
Strong vibrations and loud noise being reported from all areas on the Island now and fear amongst the Islanders

jand

#3110
July 01, 2012, 04:37:08 AM Last Edit: July 01, 2012, 04:42:42 AM by jand
2012-07-01 00:10:04.723min ago 27.66 N 18.14 W 12 ML 2.9 CANARY ISLANDS, SPAIN REGION

[link to www.emsc-csem.org]

There were two 2.9's. One at 12 and one at 15 depth.
2012-07-01 00:04:28.056min ago 27.73 N 18.16 W 15 ML 2.9 CANARY ISLANDS, SPAIN REGION


2012-07-01 00:10:04.723min ago 27.66 N 18.14 W 12 ML 2.9 CANARY ISLANDS, SPAIN REGION

[link to www.emsc-csem.org]

There were two 2.9's. One at 12 and one at 15 depth.
2012-07-01 00:04:28.056min ago 27.73 N 18.16 W 15 ML 2.9 CANARY ISLANDS, SPAIN REGION


1153090 01/07/2012 02:26:51 27.6706 -18.1545 22 3.3 mbLg W EL PINAR.IHI


[link to www.ign.es]

jand

#3114
July 01, 2012, 05:20:34 AM
http://i50.tinypic.com/53ttmx.jpg

The position of the earthquake only 1.2 km deep

SurfJames

#3115
July 01, 2012, 09:02:16 AM
Quote from: jand on July 01, 2012, 05:20:34 AM
http://i50.tinypic.com/53ttmx.jpg

The position of the earthquake only 1.2 km deep

Only 1.32km !

Does this suggest the next location where magma exits the earths crust? If so, the sea must be very deep there, and the water pressure will contain the lava in a similar manner to the last erruption.
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