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Hekla volcano, Iceland
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Iceland has a high concentration of active volcanoes due to the unique geological conditions. The island has about 130 volcanic mountains, of which 18 have erupted since the settlement of Iceland in 874 AD. In the last 500 years, Iceland's volcanoes have erupted a third of total world production lava. [1] Although the eruption of Laki in 1783 was the largest eruption of lava in the last 500 years, the eruption of 934 AD Eldgjá and other Holocene eruptions are even greater.
Geologists explain this high concentration of volcanic activity due to a combination of the position of the island in the Cordillera Mid-Atlantic and a dot below the volcanic island. The island sits astride the boundary between the Eurasian and North American plates, and most volcanic activity is concentrated along the plate boundary that crosses the island from the south-west to north-east of the island. Some volcanic activity occurs at sea, especially in the south coast. This includes fully submerged underwater volcanoes and even a recently formed volcanic islands such as Surtsey and Jólnir.
The recent [mostly volcanic eruption update] in Iceland was to Eyjafjallajökull, which began on April 14, 2010. The eruption Eyjafjallajökull closely followed a rash on Fimmvörðuháls, which had erupted on March 20, temporarily inactive April 12, and then erupted with a column of ash large (by the magma beneath the ice leaves) on April 15. The ash cloud was important enough airports close to over 20 European countries, many of which remain closed from 19 April.
Millions tonnes of ash from a volcano in Iceland, which have grounded aircraft to travel across Europe to North America, government officials report.
The latest satellite Met Office projections of the UK, which monitors volcanic eruptions, as part of a global network of counseling centers Ash the ash cloud are already coming to Newfoundland, said Bob Syvret, a meteorologist with the agency.
"The last image we have published suggest that the tail end of the pen you get it on the eastern tip of Newfoundland area, "he told FoxNews.com.
But breathe more easily, passengers: "There is a risk to North America" at this point, Syvret said, adding that the cloud probably stop around the area of Newfoundland and then north in Greenland. "
The National Oceanic and Atmospheric Administration confirmed the report of the Meteorological Office, stating the projections of the Met "do show an extension westward across the North Atlantic."
Authorities evacuated hundreds of people after the fifth-largest volcano in Iceland erupted under a glacier.
But Jeff Osiensky, program director of NOAA volcanic ash explained that the projected regions indicate no cloud of ash hanging over the country. The maps are areas of advice on everything from models, he said, and discussions with Canadian Met Office to confirm their suspicions.
"There is no indication of volcanic ash anywhere near Newfoundland. There is no data observational support for the purpose at this time. "
Up to 63,000 flights have been canceled in Europe due to the volcanic eruption in Iceland Eyjafjallajökull volcano, which has shed dust and ashes all over the country at a tremendous rate. Within 72 hours of the eruption, Iceland Science Institute Earth reported average download speeds of 750 tons of ash per second – a rate that could fill Yankee Stadium every few seconds.
Syvret said it was difficult to accurately measure the volume of ash in the air, but nevertheless believes that conditions should not pose a threat to U.S. airports.
"It should not be worse," he told FoxNews.com.
A representative of the FAA explained that the administration had not issued any official statement yet, but they were watching.
The scientists noted that Monday morning the ash plume erupting volcano rising over Iceland is now reaching a height of about 1.2 miles. Last week, the tower of ash rose to 6.8 miles.
"The situation is definitely better than it was above all on Saturday, which was a difficult day for us because of the heavy ash fall south of the volcano, "said Urdur Gudmundsdottir, a foreign ministry spokesman.
But Gudmundsdottir was careful to say the worst was over for the island of 320,000 – and for tens of thousands of people stranded at airports for the past five days.
"As you know, things are changing very quickly," he said.
An official of the Meteorological Office said the production had fallen sharply and the nature of ashes from the eruption seemed to be changing.
"Our web cameras show that there is not much, but the steam ash especially now," said Hjorleifur Sveinbjornsson, a geologist at the Meteorological Office. "The color of the water vapor is brown, but also very white so it is more like water vaporization."
There was still a risk, however, that molten rock could create new ways to run the water in the crater, causing more explosions and a higher level of ash production, he said.
Scientists said the volcano flight over the lava from the Meteorological Office had erupted from the crater and that the glacier Eyjafjallajökull sits atop the volcano. The glacier, some 75 kilometers southeast of Reykjavik, is usually a popular hiking spot.
A reporter in a helicopter flying state radio the volcano spitting pieces of lava the size of a jeep.
The volcano near glaciers Eyjafjallajoekull erupted shortly after midnight, sending lava from a hundred meters.
airspace Iceland has been closed, flights diverted and roads closed. The eruption was about 120 kilometers (75 miles) east of the capital, Reykjavik.
Near 500 people were evacuated from the area, a civil protection official, said.
"We estimate that one person is in danger in the area, but we initiated an evacuation plan and between 500 and 600 are being evacuated, "Gudmundsson Sigurgeir Icelandic civil protection department told the news agency Agence France-Presse news.
The area is sparsely populated, but knock-on effects of the eruption has been considerable.
A state of emergency is in force in the south of Iceland and transport links have been severely disrupted, including the main east-west road.
"Ash has already begun to fall Fljotshlid and people in the neighborhood have reported seeing bright lights emanating from the glacier, RUV radio public on its website.
"It was a scary, but still impressive to see, "said Katrin Eiriksdottir Moller, who lives in Fljotshlid, told the BBC.
"The ash began to fall and we could not leave the car. "
Three Icelandair flight bound for Reykjavik from the United States, were ordered to return to Boston, the RUV radio reported.
Domestic flights were suspended indefinitely, but some international flights scheduled to depart on Sunday.
It was not initially fears that the volcano could cause flooding, and causing the ice to melt on the glacier above, but that scenario seems to be averted.
Without however, could cause increased activity nearby, scientists say.
"This was a small and quiet eruption but we are worried it will cause an eruption of Katla volcano nearby, a vicious volcano could cause both local and global damage, Pall Einarsson said, a geophysicist at the University of Iceland Institute of Earth Sciences, the Associated Press news agency reported.
As the eruption takes place in an area that is relatively ice-free, there is little chance of a destructive as glacier outburst that destroyed part of the east-west road four years ago after an eruption under Vattnajoekull the great glacier.
Iceland is located in the Mid-Atlantic Ridge, the border between the high volatility of Eurasia and North American continental plates, with tremors and eruptions.
The last volcanic eruption in the area occurred in 1821 Eyjafjallajoekull.
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Raw Video: New Images of Volcanic Ash Cloud