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Re: Canary Islands Government Raises El Hierro Volcanic Risk Level - PEVOLCA confirms subsea eruption - Red Alert issued for La Restinga
Translation (Google)
The submarine volcano El Hierro has formed a cone of lava hectometres 12 in two weeks
...
ALICIA RIVERA - New York - 26/10/2011
The submarine volcanic cone of El Hierro has a volume of 12 cubic hectometres (equivalent to approximately a dozen great football stadiums integers) and the tongue of lava, which extends for several kilometers, has two hectometres as data taken in the last hour of the research vessel equipment Ramon Margalef, who has moved to the waters of El Hierro in his first season of research. "This volume of lava in just 15 days is quite remarkable, since the eruption began on October 9," said Juan Acosta El Pais, a geologist and head of the campaign on board the Ramon Margalef.
The volcano continues, is generated at the tip of a crack. Scientists have made the ship preliminary analysis of the data, which are discussed in detail below.
The new volcanic cone, 300 meters deep, has a base diameter of 700 meters, a height of 100 meters and a crater about 120 meters. The lava on the sea floor solidifies, forming a crust on the surface, but underneath is still sticky, but eventually solidifying all, Acosta said by telephone from the ship.
Scientists are on board the Ramon Margalef are entrusted with the task of taking all possible information and delivering it to Pevolca (Civil Protection Special Plan and Emergency Response for Volcanic Risk in the Canary Islands), namely the Scientific Committee, which directs the National Geographic Institute.
The first phase of the campaign for this new ship of the Spanish Institute of Oceanography sent to El Hierro has resulted in the complete mapping of the seabed in the affected area, carried out with the echo sounders on board, says Acosta, and the boat is now in Stakes port waiting for the four technicians who have to embark on the next few hours to prepare the submarine Liropus. Experts try to observe the volcano underwater video cameras high resolution of the submarine. In addition, a sled is also used camera. Lead the second phase of the campaign Francisco Sanchez, and then from October 31, will be held the third phase to the physical and chemical characterization of the water column.
The Liropus is directed from the Ramon Margalef, which is linked by a fiber optic umbilical cable. It weighs 800 kilos and descends to the water within a structure, like a cage, then released and begins his solo sailing distances to 250 meters from the cage to which it remains attached by a wire, optical fiber is also very lightweight. The camera sled, however, does not sail by itself, but is dragged by the ship. In addition to various chambers, the submarine has two articulated arms of sampling and a suction pump. You can reach 2,000 meters. The submarine, purchased from a Scottish firm, has cost 1.5 million euros, is the first in Spain with a capacity to reach these depths and its essential purpose is the study of marine protected areas, said Jose Ignacio Diaz, head of IEO fleet.
Both the submarine submerged as the lead sled lights to illuminate the environment and to grasp with their cameras, as in the water, from one hundred feet deep, total darkness, explains Acosta. The two teams will move near the bottom, two to six meters.
The Ramon Margalef, commanded by Captain Luis Gago, arrived in El Hierro on Sunday and two days later, scientists and technicians on board and had located the crater of the volcano and raised a first mapping of the seabed in the area. To do this, we used high-resolution echo sounders which bears the ship. This is equipment that uses sound waves at different frequencies and capture default sound bounce, so that we can reconstruct the background. For proper operation of this equipment is essential a very important feature of Ramon Margalef: It is very quiet.
The ship, which cost 18 million euros, carries 12 crew members and 14 researchers and technicians in this first scientific campaign. Its performance is still very good and responsible IEO are satisfied. Even the experts working on board include the proper functioning of the ship and its equipment. "It's an ideal ship for this type of work and also we are doing at the time also ideal, because with the active eruption could not have surf-for security reasons," said Acosta.
http://www.elpais.com/articulo/socie...lpepusoc_9/Tes
Translation (Google)
The submarine volcano El Hierro has formed a cone of lava hectometres 12 in two weeks
...
ALICIA RIVERA - New York - 26/10/2011
The submarine volcanic cone of El Hierro has a volume of 12 cubic hectometres (equivalent to approximately a dozen great football stadiums integers) and the tongue of lava, which extends for several kilometers, has two hectometres as data taken in the last hour of the research vessel equipment Ramon Margalef, who has moved to the waters of El Hierro in his first season of research. "This volume of lava in just 15 days is quite remarkable, since the eruption began on October 9," said Juan Acosta El Pais, a geologist and head of the campaign on board the Ramon Margalef.
The volcano continues, is generated at the tip of a crack. Scientists have made the ship preliminary analysis of the data, which are discussed in detail below.
The new volcanic cone, 300 meters deep, has a base diameter of 700 meters, a height of 100 meters and a crater about 120 meters. The lava on the sea floor solidifies, forming a crust on the surface, but underneath is still sticky, but eventually solidifying all, Acosta said by telephone from the ship.
Scientists are on board the Ramon Margalef are entrusted with the task of taking all possible information and delivering it to Pevolca (Civil Protection Special Plan and Emergency Response for Volcanic Risk in the Canary Islands), namely the Scientific Committee, which directs the National Geographic Institute.
The first phase of the campaign for this new ship of the Spanish Institute of Oceanography sent to El Hierro has resulted in the complete mapping of the seabed in the affected area, carried out with the echo sounders on board, says Acosta, and the boat is now in Stakes port waiting for the four technicians who have to embark on the next few hours to prepare the submarine Liropus. Experts try to observe the volcano underwater video cameras high resolution of the submarine. In addition, a sled is also used camera. Lead the second phase of the campaign Francisco Sanchez, and then from October 31, will be held the third phase to the physical and chemical characterization of the water column.
The Liropus is directed from the Ramon Margalef, which is linked by a fiber optic umbilical cable. It weighs 800 kilos and descends to the water within a structure, like a cage, then released and begins his solo sailing distances to 250 meters from the cage to which it remains attached by a wire, optical fiber is also very lightweight. The camera sled, however, does not sail by itself, but is dragged by the ship. In addition to various chambers, the submarine has two articulated arms of sampling and a suction pump. You can reach 2,000 meters. The submarine, purchased from a Scottish firm, has cost 1.5 million euros, is the first in Spain with a capacity to reach these depths and its essential purpose is the study of marine protected areas, said Jose Ignacio Diaz, head of IEO fleet.
Both the submarine submerged as the lead sled lights to illuminate the environment and to grasp with their cameras, as in the water, from one hundred feet deep, total darkness, explains Acosta. The two teams will move near the bottom, two to six meters.
The Ramon Margalef, commanded by Captain Luis Gago, arrived in El Hierro on Sunday and two days later, scientists and technicians on board and had located the crater of the volcano and raised a first mapping of the seabed in the area. To do this, we used high-resolution echo sounders which bears the ship. This is equipment that uses sound waves at different frequencies and capture default sound bounce, so that we can reconstruct the background. For proper operation of this equipment is essential a very important feature of Ramon Margalef: It is very quiet.
The ship, which cost 18 million euros, carries 12 crew members and 14 researchers and technicians in this first scientific campaign. Its performance is still very good and responsible IEO are satisfied. Even the experts working on board include the proper functioning of the ship and its equipment. "It's an ideal ship for this type of work and also we are doing at the time also ideal, because with the active eruption could not have surf-for security reasons," said Acosta.
http://www.elpais.com/articulo/socie...lpepusoc_9/Tes
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