[breaking] Vulkaanuitbarsting bij Canarische Eilanden

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IGN has confirmed early this morning for a small release of fluids and volcanic gases that do not pose such risk to the population

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Aanwijzingen voor vulkaanuitbarsting Canarisch Eiland

In de omgeving van het Canarisch Eiland El Hierro is mogelijk een vulkaanuitbarsting begonnen. Het Spaanse persagentschap EFE meldde vandaag onder aanhaling van experten dat volgens de jongste computergegevens op een diepte van 2.000 meter onder de zeebodem ten zuiden van El Hierro een eruptie aan de gang is. Volgens de Canarische radio zijn alle duikclubs op het eiland verwittigd hun activiteiten in het water te staken.

Op het kleinste van de Canarische Eilanden zijn sinds juli ongeveer 9.600 zwakke aardschokken geregistreerd. Ze gelden als een voorteken op een vulkaanuitbarsting. De zwaarste aardbeving deed zich zaterdagavond voor met een kracht van 4,3 op de schaal van Richter. Sinds weken heerst er op het eiland de alarmfase geel, waardoor de zowat 10.000 bewoners op een mogelijke evacuatie moeten voorbereid zijn. (dpa/dea)

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The submarine volcanic eruption of El Hierro magma and gases released into the ocean
Scientists detect the phenomenon to three miles south of the island and 900 meters deep .- The population has not been affected but the marine fauna

Forty years after the Teneguía, La Palma, Canary Islands relives a volcanic eruption. Yesterday at 6.20 (GMT), seismographs to the National Geographic Institute (IGN) has deployed around the island of El Hierro began to show an anomalous signal. Since the July 19 seismic crisis began, the curves marked as small jumps for each of the more than 9977 earthquakes. After a day of uncertainty, rumors and denials, Carmen Lopez, head of the volcanology of IGN, just after 22.30 confirmed that there had been a submarine eruption and said he was dating magmatic material. According to Lopez, the seismicity suggests that occurred three miles south of the island and 900 meters deep. Experts do not rule out that another eruption could occur closer to the coast but consider the low probability.

The scientists listed various circumstances that test the eruption: detection by the seismographs of the "volcanic tremor", the slowdown of earthquakes, the decrease in magma pressure, thereby reducing the swelling of the island, and the issuance of gases, which has affected marine life, according to pictures broadcast but not discussed by the authorities. They can see dead fish floating in the water. There is no visible evidence, as the huge column of water prevents gas to surface water to the surface. On this island in 1793 there was a seismic crisis similar to that experienced in recent months, but no record that ended in an eruption.

The president of the Cabildo Insular de El Hierro, Alpidio Armas, present at the meeting of politicians, scientists and technicians who made ​​the announcement, said that this is a joy because just with an uncertainty that has lasted months. Armas also said that in the absence of an opinion of the technicians is expected to reopen today The Roquille tunnel, which links the capital, Valverde, airport and port of the stake with the municipality of La Frontera, a closure that according to some businessmen were financially strangling the island. This technical report will also decide whether the two dozen displaced families can return to their homes. The alert level on the island will continue for the time in yellow.

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Dead Fish, eruption vent at 600m depth
Update 11/10 – 09:24 UTC : Ay 9 PM UTC yesterday, authorities have finally confirmed that an eruption took place on the ocean floor 5 km from Restinga, the southernmost location on El Hierro. IGN (Spanish seismological agency) has set the eruption depth at 600 meters. The alert level remains at yellow and authorities are asking the population to remain calm. The confirmation came after that scientists from IGN and CSIC (Consejo Superior de Investigaciones Científicas) have been circling the presumable spot of the eruption with helicopters. An important number of dead fish where the convincing sign that an eruption took place. Until then it was presumed that an eruption took place, but only based on indirect instrument readings (harmonic tremors, decrease of deformation, etc.).
Carmen Lopez from IGN, said to the press that the next 24 hours will indicate whether the eruption vent widens in if it does, in which direction (towards the island or towards the south).

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Op dinsdag 11 oktober 2011 11:54 schreef Californian het volgende:
Volgende week zit ik op Gran Canaria. Is daar ook wat te voelen?

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At 04:18 UTC on 10 October, 2011 a eruption did start somewhere close to the El Hierro volcano Island (but inside El Hierro volcano system). So far nothing has been seen to this eruption, so location is uncertain at the moment. At the moment this eruption has only been confirmed by harmonic tremors seen on seismometers on El Hierro island.

From what I can tell, based on the harmonic tremor plots. It seems that the eruption has been growing in size since it started well over 12 hours ago. This suggests that the eruption is growing in size. That also brings up the issue that new fissures might open, both into deeper ocean and on shallower depth and even on land without any warning at all.

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Op dinsdag 11 oktober 2011 12:39 schreef Five_Horizons het volgende:

[..]

Ik zie je plaatjes ook niet, idd...

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Op dinsdag 11 oktober 2011 12:57 schreef bwt het volgende:
URL van plaatje in apart venster/tab openen en een keer F5

twitter:

teideano twitterde op dinsdag 11-10-2011 om 13:40:34 @eruptionsblog some reports of felt tremor by some....ok, really prelimianr and needs confirmation, but if felt, then we have a problem. reageer retweet

twitter:

canariesnews twitterde op dinsdag 11-10-2011 om 16:01:17 New earthquake felt in the La Restinga area of El Hierro as residents are evacuated to sports venue 'as a precaution'. http://t.co/9Ph2lPoL reageer retweet

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Op dinsdag 11 oktober 2011 17:33 schreef Keiichi het volgende:
Ik heb het ook maar even naar de FP gesubmitted. Vind het nu wel belangrijk genoeg ervoor

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Op dinsdag 11 oktober 2011 18:21 schreef pfaf het volgende:
Spannend zeg. In negatieve zin.
Vreemd dat er in de media niets over gerept wordt. Of mis ik dat?

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Op dinsdag 11 oktober 2011 18:25 schreef Jumparound het volgende:

[..]

het is niet spannend of boeiend :-)
Ook heeft de vulkaan geen vermoord zusje of hoge schulden...

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Op dinsdag 11 oktober 2011 20:46 schreef Keiichi het volgende:
Nu moet het toch wel op FP komen?

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Op woensdag 12 oktober 2011 00:26 schreef Jumparound het volgende:

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het was geen sneer naar jou of fok hoor, maar naar de msm in het algemeen. Ik vind dit een super topic om te volgen!

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Op woensdag 12 oktober 2011 02:21 schreef thesiren.nl het volgende:

Ik kan niet zonder mijn dagelijkse frutsel update. Vaak zit ik in onstuimig nou gebeurd er nog wat, als ik dan je post zie bij laatste post dan weet ik, Hé nieuwe ontwikkelingen.

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Op woensdag 12 oktober 2011 07:38 schreef Keiichi het volgende:
Vulkanische activiteit op Canarisch eiland



Maar mijn submit staat nog in wachtrij

Bron: Novum/AP

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Hundreds evacuated of Restinga (Google Translate)
Already there has been completed the evacuation of 547 inhabitants of The Restinga

Only half a hundred of persons needs an emergency housing

It is believed that the eruption will be more superficial and with ' major explosivity '

The people(village) is the populated point nearest to the submarine eruption of yesterday

Maxim is alert in the south of The Iron. The inhabitants of The Restinga have been evacuated to Valverde and other points of the island more removed from the coast without any incident, after having be Raised up to red level the semaphore of volcanic alert In this locality for the possibility that there takes place(is produced) an eruption more superficial than that of yesterday.

The general manager of Security of the Government of Canaries, Juan Manuel Santana, has made clear that this measure takes with Preventive character, Before the seismic signs that indicate that it is probable that a new eruption takes place(is produced) In waters nearer to the coast and less deep That on the one that was registered yesterday, Monday.

" An eruption in more shallow waters might produce major risks, because it(he,she) would have major explosivity ", Santana has indicated. The rest of the island they are in yellow alert.

In a press conference offered in Valverde, the capital of the island, Santana has preferred not speaking about "evacuation", but of " Preventive movement ", Because the situation can change with the course(year) of the hours and still(yet) there is no certainty from which the neighbors of The Restinga have to happen(pass) the night out of his(her,your) houses.

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El Hierro tsunami chance
The Canary Islands Directorate for Civil Protection and Emergency Response yesterday raised the state of alert for seismic and volcanic activity on the Island of El Hierro to red.

The CEO of the agency explained that the increased state of alert only applied to the municipality of La Restinga and the rest of the island remains of yellow alert.

La Restinga (547 inhabitants) is a Town on the southernmost coast of the island, and is closest to the underwater eruption which occurred yesterday, 5 kilometers from the coast and at an estimated depth of 1000mts.

The CEO also stressed that this was purely a precautionary measure and that there was no immediate threat of danger, however there is a strong likelihood of a further eruption over the next few days.

Experts from the National Geological Survey and the Higher Council for Scientific Research (CSIC) moved to the island have not ruled out the possibility that any such eruption, together with increased levels of magma rising to the surface could result in a new Volcano being created on the island.

The volcanic activity has attracted much interest from around the world - especially in the USA. It has long been speculated that any volcanic eruption of the Caldera de Taburiente Volcano on the neighbouring island of La Palma may cause a Tsunami of up to 300mts that would cross the Atlantic in a matter of hours. Geologists believe that this is exactly what happened when the El Hierro Volcano broke apart and fell into the Ocean thousands of years ago, creating the 'Val del Golfo' crescents shaped bay, and creating a Tsunami that was largely responsible for the creation of the Florida Everglades.

Chatter on the various social networks and forums critcises the United States Geological Survey (USGS) for their lack of communication surrounding the situation in the Canaries. Sources claim that this is so not to panic the public unnecessarily.

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13/10/2011 @ 09:01 – A new earthquake has been detected, this time to the north-east of the island. Until now, all the earthquakes have been located to the south coast. It took place at 05:10:36 (local time) and registered 1.7 on the Richter scale.

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El Hierro update 2
The eruption in El Hierro volcano continues today, as it did yesterday. But the strength of the eruption appears to have dropped today from what it was yesterday. But this does not mean that the eruption is over. It just means that the current fissure that is erupting is about to close up, mostly due to the material that it has been ejecting into the ocean floor. That means a new fissure or vents is about to open up somewhere. When and where is impossible to know. But this is the nature of volcanoes that erupt in this manner, but El Hierro is a shield volcano [second link here]. Good examples are Krafla volcano and Vestmannaeyjar Island volcano. Both of those volcanoes are in Iceland.

Today around 14:20 UTC there was a sharp tremor drop in El Hierro. This means that the magma flow dropped in the current eruption fissure. This also means that if the pressure is not enough that fissure is going to stop erupting. Because of this has happened a new fissure or a vent should be expect at any time as I have told before. When and where that might happen is impossible to know, as that outcome depends on where the magma finds its pathways inside the volcano. There might not be any earthquakes before this happens, as the rock is unlikey to be hard enough to make them. Some small earthquakes might happen if the rock layer is hard enough. Today few deep earthquakes have been recorded. This means that new magma is getting into El Hierro volcano from the mantle (where no earthquakes happen). This also means that this eruption might take place for some time now. But it is impossible to know for how long, as there might be a lot of magma flowing up from the mantle it self and up to El Hierro volcano.

Many people have been wondering why this eruption has not been seen. The fact is that depth drops quiet fast around El Hierro Island. Around 4 km out the depth is close to 1.5 to 2 km, it is only close to the island that the depth starts to get shallower. At the moment is is hard to say what happens next in this eruption on El Hierro. But more vents should be expect to open up then have already have.