[breaking] Vulkaanuitbarsting bij Canarische Eilanden #2

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02/11/2011 @ 08:00 There has been a 4° earthquake detected this morning to the north coast of El Hierro as the government prepare for a new eruption. Additional military personnel and materials such as shelters (for a capacity of 2.000 people) has been sent to the island of El Hierro as experts predict a new eruption on or near the coast of El Hierro after a similar pattern follows the last one. This morning at 07:54 there has been a new earthquake measuring 4° on the Richter scale detected to the north coast of the island. It was felt by the population.

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Update 02/11 11:09 UTC :
- IGN had listed 2 shallower earthquakes, 1 at 1 km depth (south of El Pinar) and 1 at 3 km depth nw of Frontera .
- both quakes have been recalculated and revised / deleted (instrumental errors are common in earthquake measuring)

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The General Directorate of Security and Emergency of the Canarian Government scientists confirmed that Pevolca (Civil Protection Plan for Volcanic Risk) move this morning at El Golfo, Border, El Hierro, was detected after an increase of seismicity in the last hours.

During the visit, assess the situation of eruptive phenomena and the state of neighbors. Throughout the day they decide whether to take further measures of civil protection for citizens.
So far the situation "has not changed" is "quiet," said a regional government spokesman, and no new decisions have been taken because "there are no significant changes or a substantial difference" with respect to previous days.
The National Geographic Institute (IGN) detected at 7:54 pm in the La Frontera an earthquake of magnitude four, according to an initial assessment, which would be the most important seismic crisis detected in this area living on the island of El Iron this summer.
This earthquake was detected at 20 km depth, according to the same source was felt by the population.
Overnight and early morning hours IGN recorded more than 40 earthquakes, although none as important as this morning.

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A professor argues that Barcelona "has underestimated" the Explosive material

The pyroclastic found in waters of La Restinga provide "clear evidence" of an explosive "big" so far "not mentioned publicly by anyone." This is to a report, prepared by Professor of Petrology and Geochemistry, University of Barcelona, ​​Sunday Gimeno, who believes that "it has underestimated the explosive material."

According to The El Hierro Journal contains, the material analyzed,''does not present the characteristics of a surtseyano like eruption, "which is, according to this expert defends the scenario" repeatedly proposed by the scientific monitoring committee.''
In his view, since the surface began to appear in the pyroclasts, the commission "should be understood that it was explosive submarine eruption and a different kind" and that if, moreover, implied magma mixing was "potentially much more dangerous rhyolitic magma involved and if, further, "Gimeno said. Therefore, in its report argues that the pyroclastics," can, and should be analyzed in a matter of hours "for what is being asked the reason for many days "still did not know what they are."
The study of pyroclastic, by the doctor at the request of the City of El Pinar, indicates that magma mixing different compositions is a phenomenon widely reported in the literature as "increasing the explosiveness of magma and, in many cases as a trigger for an explosion, "he explains. Therefore, for this professor of the University of Barcelona, ​​have been mapped throughout a volcanic hypothesis surtseyano" trivializing its potential explosiveness. "
In fact, after Chemical analysis of the material found in the area, notes that, once classified by the TAS diagram (Total-alkali versus silica) of the International Union of Geosciences (IUGS), which is the internationally accepted usage The black product is a basic rock (basanite) and White, a differentiated product (alkaline rhyolite).
The first product was already known in other samples from the island of El Hierro from previous eruptions, while the second is "comparable but not identical, to what is known in other eruptions are less frequent in El Hierro (slightly richer silica), "in the report.
The expert would be advisable to perform a systematic sampling and characterization of pyroclasts that are being expelled by the volcano, as the compositional characteristics and the degree of crystallinity can vary during the eruption and "the evolution of this condition, so this task is useful in the face of crisis management, "he advises.
Also, the professor says in his report that the determination of chemism, which is what can be explained by natural phenomena in accordance with the laws of chemistry, and the degree of crystallinity of the rocks formed during an eruption, "should be done as soon as possible in the course of this, as both factors definitely affect the explosive and therefore the associated volcanic hazard."
Although, according to this expert advocates, many of the Spanish public universities and different centers of the Center for Scientific Research (CSIC) have equipment and technical staff "well qualified", in his opinion, "can not understand how this characterization not carried out since the first time by the commission or commissioning scientific monitoring of the eruption, "he concludes.

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Op woensdag 2 november 2011 16:19 schreef bwt het volgende:

[..]

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Op woensdag 2 november 2011 16:27 schreef bwt het volgende:
Mijn gok:

Een vergelijkbare uitbarsting als in het zuiden van het eiland. Maar dan dichter bij de kust en een tikkie zwaarder. Ik gok dat we meer borrelend bruin water gaan zien.
Geen grote explosie aangezien het onderwater plaats vind.

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Op woensdag 2 november 2011 17:04 schreef bwt het volgende:
Daar zat ik me eerder ook al over te brainstormen.
Maar kon geen echte reden vinden om het te posten.

^{(hoe kom je trouwens bij deze plaatjes?)}

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Op woensdag 2 november 2011 23:22 schreef Takkembah het volgende:
Weet iemand wat teideano nu op Twitter roept? Tis spaans en zit op toon dus kennie vertalen.....

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en weer ..... nog een goede maar goed wiebelen.