[breaking] Vulkaanuitbarsting bij Canarische Eilanden #2

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Op woensdag 19 oktober 2011 14:58 schreef Frutsel het volgende:

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is ie toch al?

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20/10/2011 @ 08:40 According to the IGN, the El Hierro underwater eruption is slowing down. The tremors have decreased in intensity as have the number of earthquakes which would indicate that the current process is coming to its final stage.

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the geological evolution of the Canary Islands. Today at 20:00

The PhD in Geological Sciences and Research Professor Juan Carlos Carracedo CSIC also director of the volcanological station of the Canaries, presented this Thursday, October 20, the book I Geology of the Canary Islands in the Museum of Science Elder and Technology of The Palmas de Gran Canaria.

Professor of Geology at the University of Las Palmas de Gran Canaria Francisco Pérez Torrado will be responsible for performing the initial presentation of the act.

Juan Carlos Carracedo perform a review of the geological evolution of the Canary Islands. Will refer to the beginning of the old Canary by the action of a hot spot for more than 55 million years ago until now represented by the last eruption in the Canary Islands and the first underwater documentary, recently occurred in El Hierro, the youngest island of the archipelago .

The book launch will take place this Thursday, October 20th at 20.00 pm in the Elder Museum of Science and Technology of Las Palmas de Gran Canaria.

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Scientists confirm that the seismic process is losing momentum

The researcher of the Higher Council for Scientific Research (CSIC), Joan Martí, and responsible for Monitoring Volcanic National Geographic Institute (IGN), Carmen Lopez, have confirmed that the submarine eruption of El Hierro has expelled magma, which is still going abroad because samples of basalt "typical" in the Canary Islands that have been collected.

But noted that the magma "is coming out," Lopez said the tremor signal has been reduced progressively and that the deformations are stable, so it noted that the seismic process is losing strength.
Marti said that the eruption was not "too large" and dismissed the idea that an explosion soon, because the first phase tends to end, so that "we are returning to normal." In a second phase, said it was not until within weeks or months.
For this reason they will stay ahead of the equipment and scientific instrumentation on the island, which is higher than it had at the beginning of the volcanic crisis, "he said." Although the researcher found that the risk to the population has not been great so far, acknowledged that "caution is always short."
He recalled that from July to October were recorded on the island more than 10,000 earthquakes due to magma movement at first, adds, had a horizontal path, only to be vertical, reaching the surface. For scientists the peak was the bubbling was observed recently in the sea surface.
For Martí "things have been done right the first time" because it detected the "minimal changes" of the situation and "has occurred that was predicted."

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El Hierro Volcano about to end 'eruptive phase'

CSIC Scientists monitoring the volcanic eruptions on El Hierro, together with the National Geographic Institute (IGN), confirmed earlier this morning that the 'eruptive phase' of the volcano is now decreasing. However, this is not to say that the activity as a whole has come to an end as it is likely that the volcanic activity may move towards a further phase.

Scientists also confirmed that tremors on land associated with the volcanic activity had also subsided considerablly over the past few days.

Ground deformations, drinking water samples and lava samples are still being analyzed.
Carmen Lopez, for the IGN confirmed "What had been assumed from the outset is that it was an eruption of basaltic magma which reached a depth of 11 or 12 miles and has been moving for more than three months until it found a place to rise to surface, which is what it has now done."

The Volcanologist said how the submarine eruption began at 1,000 meters below sea level and had been moving north at a depth of just 200 meters, which is why the effects were seen on the surface.

Lopez stressed the importance of waiting for all current activity to cease before declaring that the eruptive process was about to enter a new phase as it wasn't unheard of for the same activity to re-start after a short break.

The scientists on the island are continuing to monitor the volcano, but believe that any threat to the population is "low".

VOLCANO EARTHQUAKES AND FISHES EL HIERRO

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20/10/2011 @ 16:25 – The tremors on El Hierro continue but have decreased in intensity.


20/10/2011 @ 16:22 So far today there have been 8 earthquakes around the island of El Hierro, as follows:

Date Time(GMT) Latitude Longitude Depth
(km) Richter
20/10/2011 14:16:32 27.6537 -18.1143 22 1.6
20/10/2011 13:37:10 27.6643 -18.0698 18 2.0
20/10/2011 11:49:10 27.7696 -18.0474 23 1.8
20/10/2011 11:46:34 27.7806 -18.0809 23 1.7
20/10/2011 11:40:15 27.7986 -18.0671 22 1.6
20/10/2011 11:08:29 27.6772 -18.0406 18 1.5
20/10/2011 09:19:33 27.9209 -18.1141 11 1.7
20/10/2011 00:13:27 27.6580 -18.0820 16 1.5

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El Hierro : Tunnel reopens but red alert remains

The evacuated residents of La Restinga on the island of El Hierro will be allowed to return to their properties as from from 08:00 on Friday due to the decrease of seismic activity. However, the authorities will maintain surveillance 24 hours a day in the likelihood of activity returning and a further evacuation being necessarry. The Los Roquille tunnel will open between the hours of 08.00 ro 20.00.

For the time being schoolchildren have been moved from the village to study at the town of El Pinar closeby.

The Los Roquille tunnel will only be open during daylight hours to begin with, however it may be permitted to open throughout the night depending upon the developments over the coming days.
With regards to the evacuations at La Frontera, a technical committee comprising of teh El Hierro local council, The Canary Islands Regional Government and the Geological and Mining Institute of Spain (IGME) have assessed the situation and are due to inform the owners if they may return to their homes.

PEVOLCA also confirmed that the state of alert remains as 'red', and that this is likely to remain the case until data suggests that the eruptions are over.

60 METERS FROM SEA SURFACE ALL WILL SEE THE FORCE OF VOLCANIC EXPLOSION!

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El planeador submarino Altair y la erupción en El Hierro

The Seaglider unmanned underwater glider 'Altair' in the Canary Islands Oceanic Platform (Plocan) began work on Wednesday (October 19) in waters of the Calm Sea, across from El Tacorón on the island of El Hierro. Its implementation is the main novelty in the research conducted by Professor Ignacio Lozano ship in the eruptive process occurred off the coast of El Hierro.

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Op vrijdag 21 oktober 2011 14:03 schreef bwt het volgende:
Stan - wat is de bron?

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El Hierro : Tunnel reopens but red alert remains

The evacuated residents of La Restinga on the island of El Hierro will be allowed to return to their properties as from from 08:00 on Friday due to the decrease of seismic activity. However, the authorities will maintain surveillance 24 hours a day in the likelihood of activity returning and a further evacuation being necessarry. The Los Roquille tunnel will open between the hours of 08.00 ro 20.00.

For the time being schoolchildren have been moved from the village to study at the town of El Pinar closeby.

The Los Roquille tunnel will only be open during daylight hours to begin with, however it may be permitted to open throughout the night depending upon the developments over the coming days.
With regards to the evacuations at La Frontera, a technical committee comprising of teh El Hierro local council, The Canary Islands Regional Government and the Geological and Mining Institute of Spain (IGME) have assessed the situation and are due to inform the owners if they may return to their homes.

PEVOLCA also confirmed that the state of alert remains as 'red', and that this is likely to remain the case until data suggests that the eruptions are over.

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El Hierro Coast to be Declared Area of Special Protection

The las Calmas area off the South-West coast of the Island of el Hierro, is to be designated an area of special Protection (SPA) by Ministerial order, after being affected by pollution from the stain created by the volcanic eruption over the last week.

SPA's are regarded as being under the protection of the crown, and intended to promote the conservation of migratory bird species, according to the draft that is available to the public by the Ministry of Environment, Rural and Marine Affairs .

The news SPA in the las Calmas area may not have affected the birds that nest on the ground, as they will look for food in deeper waters and not close to the coast, which is where the majority of the pollution has drifted, according to Antonio Lorenzo, from Tenerife SEO / BirdLife .
The ministerial order to comply with Law 42/2007 for Natural Heritage and Biodiversity . And the identification of SPA's comes "from an intense scientific work and earlier research." However, further research may result in new areas designated for the smae protection.

The new SPA will join the marine Natura 2000 network in Spain, a European system of biodiversity conservation.

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El Hierro : The Conspiracy Theories Keep Coming

It has become an impossibility to keep count of all of the activity in the recent earthquake swarm on the island of El Hierro, with latest estimates place the tally somewhere around 10'800 since activity first began back in July.

Indeed, the media's focus seems to have shifted from the frequency and intensity of the seismic activity going on underneath the island - which is still happening - to the progression of the eruptive phases of the underwater volcano, which, if what Scientists are telling us is to be believed, seems to be on the wane.

One thing, however, that does seem to be on the increase is the amount of conspiracy theories being floated on a number of forums and social networks on the web.
Accusations are abound of scientists and politicians deliberately manipulating analytical data in order not to panic the residents of the island in light of a further enormous Earthquake / Volcano / Tsunami / Elvis landing on the Island on a UFO (* delete as appropriate).

Perhaps the most popular conspiracy theory doing the rounds is that of the entire eastern seaboard of the USA being just hours away from disaster with a massive earthquake / Volcanic eruption causing a 300 ft tidal wave. Although the theory is not a new one by any means, with its likelihood being documented on the BBC Horizon program in the 1990's, there were 2 key points that need to be considered before our friends across the pond go in search of higher ground :

1. The documentary discussed the probability of an event that was though to have happened some 50'000 years ago, when an enormous landslide fell away from the North side of the island of El Hierro, accusing a Tsunami that has been widely thought to have been responsible for the creating of the Florida Everglades. Comparing the Island's Geology of 50'000 years ago to today seems obsolete.

2. The Documentary predicted what would happen in the event of the Caldera de Tabauriente, on the neighbouring Island of la Palma suffering a similar fate. Whilst it is generally agreed that any similar activity would cause an enormous landslide resulting in a 'Super-tsunami', which would be expected to cause the worst natural disaster that history has ever recorded, it needs to be remembered that A) La Palma is not El Hierro, and that B) There have been no confirmed reports of seismic activity on La Palma.

If you have 5 Minutes to spare, have a look at our favourite scaremongering conspiracy theory on Youtube (above).

Whilst being particularly fond of style guru Prof Simon Day, Tumbit blames the Illuminati.

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Op zaterdag 22 oktober 2011 00:45 schreef zenkelly het volgende:
http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EOSO_2011-10-21&ver=s&estacion=EOSO&Anio=2011&Mes=10&Dia=21&tipo=1
Check seismische activiteit Gran Canaria 21-10-2011...(en Fuerteventura, Lanzarote,Tenerife, LaGomera ook). En nog steeds La Palma 'out of seismische reach'.

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Op zaterdag 22 oktober 2011 09:51 schreef stan12 het volgende:

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Dat is de schokgolf van de 7,9 aardbeving. Over heel de wereld is die terug te vinden. Het rare is, bij EL Hierro niet!
[ http://img695.imageshack.us/img695/6429/nieactive.gif (copy/paste deze link) ]

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Op zaterdag 22 oktober 2011 09:51 schreef stan12 het volgende:

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Dat is de schokgolf van de 7,9 aardbeving. Over heel de wereld is die terug te vinden. Het rare is, bij EL Hierro niet!
[ http://img695.imageshack.us/img695/6429/nieactive.gif (copy/paste deze link) ]

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Op zondag 23 oktober 2011 08:51 schreef bwt het volgende:

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Ik ben ff niet aanwezig en lees iets over een 7.9?
Waar?

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Further earthquakes and volcanic activity returns to El Hierro

The volcanic activity on the island of El Hierro has shown new signs of activity this morning, with bubbles on the surface of the ocean changing in colour.

Last night scientists also recorded around 50 new earthquakes between 24 and 16 miles deep, and with a magnitude of between 2 and 2.6 on the richter scale.

Bubbles have returned to the surface of the Las Calmas bay after appearing to decrease on Friday, with a change to their colour which may indicate a different phase in the eruptive activity. The Security General Directorate has decided that the Emergency and Rescue Group have made a number of inspection flights over the island, but are yet to make any official statement to confrm their opinion.
Earlier thsi morning the Ramon Margalef research ship from the Spanish Institute of Oceanography arrived at the island in order to take samples from the Las Calmas area and to analyse changes in the underwater volcanic activity.

Whilst the residents of the town of El Hierro are anxious that an further evacuatuion may be forced upon them, Scientists report that changes such as reported ar quite normal and to be expected in activity such as this.

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VALVERDE (EL HIERRO), 25 Oct. (EUROPA PRESS) -

A team of scientists from the Spanish Institute of Oceanography (IEO), public research body under the Ministry of Science and Innovation, has been located and mapped the outbreaks of the eruption of underwater volcano in El Hierro during the scientific mission from the past 23 October, being developed in the area on board the ship Ramon Margalef.

The scientific team, led by Juan Acosta and Francisco Sanchez, has located a newly created volcano cone-shaped, with a base diameter of 700 meters, a height of 100 meters and a crater about 120 meters wide. The base of the crater is located 300 meters deep. Also, using higher frequency echosounders has been possible to locate the columns of gases and fluids emitted by the volcano and other emission points (cracks).

The authors emphasize that the finding is the first to be achieved in these conditions throughout the world, has been investigated since the volcano and associated volcanic activity in the optimal timing of eruptive activity on the merits. This early localization and characterization of volcanic phenomenon will study the temporal evolution of these phenomena and facilitate the interpretation and understanding of volcanic phenomena on the islands.

SHIP FIRST SCIENTIFIC MISSION

Ramon Margalef The ship departed from Vigo on Tuesday October 18 en route to Tenerife, where he arrived on Saturday. On Sunday morning finally came to El Hierro. The Ramon Margalef, until a few weeks ago still in the testing phase, accelerated its set-up to lead this scientific mission, which involves its release. Its aim is to study volcanic activity in the area and its consequences in the seabed of the Canary Islands and in its ecosystem.

The ship is carrying a remote monitoring underwater vehicle called Liropus, able to observe and ecosystems sample up to 2,000 meters deep.

The oceanographic campaign in which these discoveries have been made in collaboration with the Canary Islands Oceanic Platform (Plocan) and the Canarian Agency for Research, Innovation and Information Society (ACIISI), under support of the Scientific Committee Pevolca.

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On October 23, 2011, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAs Terra satellite captured this natural-color view of El Hierro and the North Atlantic Ocean surrounding it. A milky green plume in the water stretches 25-30 kilometers at its widest and perhaps 100 kilometers long, from a large mass near the coast to thin tendrils as it spread outs to the southwest. The plume is likely a mix of volcanic gases and a blend of crushed pumice and seafloor rock.

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Scientists now move to El Golfo because of the turbidity of the water in La Restinga
^{Thursday, October 27, 2011 7:55 acnpress}

The research vessel of the Spanish Institute of Oceanography (IEO) Ramón Margalef, Francisco Sanchez, announced the launch, on Thursday, the second phase of research will focus on imaging the coastal area of El Hierro. However, Sanchez said that due to the turbidity of the water in the area of ​​La Restinga will begin by the area of El Golfo and will continue in the current zone of the eruption when the process is restored.

The new data from the scientific campaign being carried out, since last October 23, the Ramon Margalef, on the submarine eruption of El Hierro, will do a better prognosis for the development of submarine eruption, as the member said Wednesday Scientific Committee for Civil Protection Plan for Volcanic Risk Islands (Pevolca), Joan Martí.
Researcher at the Center for Scientific Research (CSIC) and member of the Scientific Committee Pevolca, Joan Martí, the data provided by Ramon Margalef scientific campaign have confirmed that this is a fissure eruption that is located at the intersection of failure with the crack, at a depth of 200 meters, and can "emit about 40 million cubic meters of magma and even something more."
According to Martí's current data and seismic tremor level and above those provided by the scientific campaign, support the conclusion that there is a very low probability of occurrence of an eruption on the ground.