El Hierro

[jand]

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2011-12-04&estacion=CHIE&Anio=2011&Mes=12&Dia=04

Harmonic Tremors are getting wider again lots of spiking aswell.

[fifi]

quote:Originally posted by jand

Fifi

Hope your painting goes well.

Your second in command is holding the fort for you!!!

Thanks [] Ive damaged my  leg jumping off the worktop (it feels like its falling out of the socket every now and then and its agony) so have to get it seen to tomorrow so will be back to my computing for a few days I think. Only half a house done but its a start.[]

[TripleH]

Is this thread broken?

PS Hope the leg is ok Fifi

[jand]

Good Evening

Hope your leg is ok Fifi.

Latest report from Avcan Translated

STATEMENT OF AVCAN TO THE CALL OF SOME GROUPS AND INDIVIDUALS TO BEGIN TO TERMINATE ALL.
At a time like this that it seems that the sismovolcánico of El Hierro phenomenon would be dying we have forced to support official statements as the of the party official yesterday, 4/12/2011 at 1312, which reads, inter alia: "From the direction of the PEVOLCA it is recalled that the red light stays in La Restinga because still there is an eruption off the coast." "Scientists don't know how long it will last and even when the situation is certain stability should pass still a time to confirm the complete relaxation of the system."
It is very important to take into account that many phenomena like this have gone through phases of relaxation like this and have become a resurgence with power when they were least expected; Therefore since AVCAN we call not totally relax vigilance and keep the attention to the situation and the considerations made by the responsible sismovolcánica surveillance and competent authorities aimed at preventing risks.
That we have had differences in criteria at times with those institutions legally responsible for the management of the crisis does not mean that we recognize its vital and leading role in this particular phenomenon, and as we have done necessary anytime, call to heed no doubt of its recommendations and orders face to prevent risks of persons. In this regard it is important to highlight one of the biggest dangers of this type of phenomena that persist over time is relaxation of vigilance and care for the population because we got used to the constant risk and when appears the slightest chance of tranquility, we tend to relax in the necessary attention and if suddenly arise a situation of danger it took in reacting to warnings from the authorities and take the risk again and, therefore, we would be at high risk.

Accordingly with all of the above we are critical of certain persons or groups not responsible risk management are making calls to the disappearance of the red light, to not protect us both, etc., when there is a volcanic eruption in progress just 2/3 km from a population, manifested in the materials that arise in surface, in the unstable tremor and the condition to underwater life in the area.

Finally we cannot close our eyes to the condition that is assuming this long natural phenomenon in the economic life of the island, but, above all, in everyday life of the Hierro people. And therefore, recommend the reading of the text "Volcano of las Calmas, in its 10th anniversary" published in this same place yesterday Saturday at 1515 (h) that proposes a kind of measures that do not follow in the sense of ignoring that we live in a volcanic islands, to take advantage of our natural features to promote economy and tourism based on them, and not an economy based on a wreck and ignorance of the environment and the benefit of the few against the improvement of the social conditions of the population.
(Humberto)

[jand]

volcanocafe

Copied.

schteve says:

 December 5, 2011 at 18:48

Evening all, hope you are all having a good day, back to bob for a moment if I may,
 I've been noodling around with this just for learning purposes and I thought I might as well share it with you lovely people. It shows EQ locations month by month and then week by week, they are not synced (monthly plots start 1/7, 2 weekly start 19/7) as this is a first try. It shows Eqs starting in the north, moving south, and then returning north, Tanganasoga is more or less in the middle of all recorded EQs but they seem to "circulate" the area when viewed over time... hope one of these comes out as a link (first try at this too)
http://www.youtube.com/watch?v=lCJyBBvW5Zs
http://www.youtube.com/watch?v=lCJyBBvW5Zs

[fifi]

Thanks Triple H and jand, x ray tomorrow and in the bed.[] The timelines videos were good. If the theory about earthquakes being like a tube of toothpaste applied there, then there should have been magma pushed towards Tanganasoga when the two areas were densely covered with earthquakes.

[jand]

Fifi How would we know if magma was being pushed towards Tanganasoga?

[fifi]

By the level of gasses in the area I think jand but I think that the levels are decreasing at the moment. There would be an increase in deformation I think too in the area. Im a bit dopey from my tablets.[]

[Deso]

quote:Originally posted by fifi

Im a bit dopey from my tablets.[]

Sayin' nowt  [] [] []

[fifi]

Ok then...dopier.[][][][]

[jand]

volcanocafe

One persons response to http://www.youtube.com/watch?v=lCJyBBvW5Zs

Hi Schteve ,thank you for this. It is really wierd how the quakes move, and yes they do seem to "Pivot" around Tanganasoga.A very good first try .
 I would like to comment on how many people have been learning and experimenting with a variety of plots. I have a suspicion that Lurking has influenced and given great inspiration to many.This is what these Blogs are about., Science, How volcanoes work, Education, Encouragement and Ponderings......

[jand]

KarenZ says:

 December 5, 2011 at 21:34

@GeoLurking: plots of the P wave speeds and S wave speeds for November (2D this time.)

We seem to have a bit of everything shown on your plots. However, as the Nov quakes cover quite a large area (including the debris from the El Golfo landslip), this might not be surprising.

http://oi44.tinypic.com/dr9pnd.jpg
 http://oi42.tinypic.com/2h7qb1g.jpg

Reply

GeoLurking says:

 December 6, 2011 at 00:34

Now that's an interesting plot. Much to ruminate upon there.

[jand]

Update 05/12 – 23:15 UTC
 - Guardia Civil Helicopters and Involcan scientific flight of today December 5, 2011. A clear jacuzzi is visible during the morning hours. The second video is quit boring in the beginning (first 3 minutes), but the jacuzzi action comes at the end of the video

http://www.youtube.com/watch?v=vxreRzKOYVQ&eurl=http%3A%2F%2Fearthquake-report.com%2F2011%2F09%2F25%2Fel-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow%2F&feature=player_embedded

http://www.youtube.com/watch?v=QKWeUBs4rZs&eurl=http%3A%2F%2Fearthquake-report.com%2F2011%2F09%2F25%2Fel-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow%2F&feature=player_embedded

[jand]

volcanocafe copied.

Wagabond says:

 December 6, 2011 at 07:59

Trial by fire for R/V Ramón Margalef
 The Role of Ramon Margalef in the monitoring of the El Hierro eruption has been very important.
 It is remarkable that the ship is really in it's virgin trip.
 http://www.simrad.com/www/01/NOKBG0237.nsf/AllWeb/4AE3CD4A6D90B76AC12579490025F9C6?OpenDocument
 In addition to very important sampling, the bathymetry has been the main course.
 The tool for that is the newest, most technical of Kongsberg Simrad multibeem sonar, the 710
 http://www.km.kongsberg.com/ks/web/nokbg0240.nsf/AllWeb/993132242751F5EDC1256FA300360548?OpenDocument
 Another multibeem sonar on board is the ME 70, a very important tool for fishery control.
 http://en.wikipedia.org/wiki/Multibeam_echosounde

[TripleH]

So what do you think jand?

[jand]

Smoking rocks again on the webcam now.

[jand]

TripleH

I am not a scientist or a specialist on Volcanoes I can only read the information and comments as anyone else can from the information graphs maps and comments I post which are from other sites organisations and people.

IMO I still think that Tansganosa has something to do with all this (but of course I may be wrong) and I think whatever is happening is still underway and has not stopped.

[jand]

One of the ships looks to be going out to the new point of the smoking lava.

[fifi]

Surprisingly active today with all the smoking lava. Perhaps there is not enough force behind the magma to leave by the mouth of the Tanganasoga which is very high up and so it is choosing an easier path?

[TripleH]

quote:Originally posted by jand

TripleH

I am not a scientist or a specialist on Volcanoes

Erm, I thought you and Lady Fifi were professors!!

[jand]

pdate  06/12 – 13:40 UTC
 IGN (Instituto Geográfico National) and IEO (Instituto Español de Oceanografía) and PEVOLCA will publish some new topographic maps from the eruption area soon. We do not have the new exact depths of the vents yet, but Joke Volta was allowed to take a picture from the new map yesterday evening.  You will have to wait for the official press release from IGN, IEO and/or Pevolca to finc out how much meter the volcano vent grew the last couple of weeks. The bathymetry was done by the Ramón Margalef oceanographic ship during last week Bimbache 1011-6 mission (until the beginning of December).

[jand]

Update 06/12- 10:59 UTC
 The Salvamar is still fishing lava stones / pumice out of the Las Calmas sea (in fact the open Atlantic Ocean) and the smoking lava stones are still arriving at the surface.  We have some additional time lapse videos which we will post in our video page (to be made later today). The new time lapse has mainly the same images.

Update 06/12- 10:23 UTC
 We made a second time lapse video a few moments ago of the Salvamar coast guard ship nearing the smoking lava stones. 5 minutes of TelevisionCanaria webcam footage have been compressed into 1 minute 32 seconds

http://www.youtube.com/watch?v=pASf85b6pZg&feature=player_embedded

[jand]

elhierrodigital.es

Committee Director of the emergency by volcanic risk (PEVOLCA) Civil Protection Plan will meet tomorrow Wednesday 7th, 13: 30 hours, to analyze the evolution of the eruptive process underway.

This meeting will take place in the Insular Coordinator Centre of emergency and security (CECOI), located in calle San Juan, 11, Valverde.

At the end of the meeting, it shall inform the media.

[jand]

volcanacafe copied.

suzie says:

 December 6, 2011 at 11:13

UK Met Office preparing for a Hekla eruption??

http://www.metoffice.gov.uk/aviation/vaac/vaacuk_vag.html

[jand]

Interesting reading.

http://www.sociedadgeologica.es/archivos/geogacetas/Geo20%20(2)/Art35.pdf

[jand]

Just been on BBC News saying something about a volcano errupting 4 mile underwater could it split an island. Dont know if its El Hierro but should be on BBC News soon .

[jand]

Its on now but its about Somoa and the Tsunami that happened.

[jand]

bbc.co.uk

Startling new images from the depths of the Pacific Ocean reveal one of Earth's most violent processes: the destruction of massive underwater mountains.

The pictures were created by sonar in waters up to 6km (4mi) deep.

They expose how tectonic action is dragging giant volcanoes into a chasm in the seabed.

The volcanoes are strung across several thousand kilometres of ocean floor and are moving westward on the Pacific tectonic plate at up to 6cm per year.

The extraordinary scene was captured along the Tonga Trench during a research expedition last summer.

The trench is a highly active fault line running north from New Zealand towards Tonga and Samoa.

The first images have been released to BBC News as the findings are presented to the annual conference of the American Geophysical Union.

They are the result of a joint project by the universities of Oxford and Durham, funded by the Natural Environment Research Council.

Into the abyss

Where the Pacific plate collides with the Indo-Australian plate, it is forced downwards into the trench, a subduction zone, and the volcanoes are carried with it.

The trench, reaching a depth of 10.9km, forms the second deepest stretch of seabed anywhere in the world - easily large enough to hold Mount Everest

[jand]

cont

With frequent earthquakes, the region is vulnerable to tsunamis and one aim of the research is to understand whether the destruction of the volcanoes adds to the risk.

One theory is that the volcanoes add friction to the movement of the two plates which leads to a greater build-up of tension and consequently to a more explosive quake.

Another is that by shearing into blocks as they collapse, the volcanoes provide a kind of buffer easing the subduction process.

Earthquake puzzle

Professor Tony Watts of Oxford University, joint leader of the project, says that earthquakes are less frequent at the precise point where the volcanoes enter the trench.

"When you see size of these features you'd think they'd cause massive earthquakes and disruption - and that was our starting hypothesis."

"But we found that the volcanoes were highly fractured before they entered the trench - which is very important for what happens after they enter the system.

Analysis so far has not determined the precise impact of this process.



Professor Watts says the key question still isn't settled: "Are they added to the Australian plate or are they carried down in fragments into the deep earth mantle?"

[SurfJames]

This is amazing stuff Professora jand.  Absolutely brilliant and I am leaning so much via your posts

A BIG thank you. xx