冰島火山'預備爆發'

冰島火山'預備爆發'
Icelandic Volcano 'Set to Erupt'
Tue, 08 Feb 2011 16:53 CST

Scientists in Iceland are warning that another volcano looks set to erupt and threatening to spew-out a pall of dust that would dwarf last year's event.
冰島科學家們警告，另一個火山看來預備爆發，並威脅要噴出一幕塵埃，矮化去年的事件。
© Reuters
Lava and ash explode out of the caldera of Iceland's Eyjafjallajokull volcano
熔岩和火山灰從冰島火山艾雅法拉爆出

Geologists detected the high risk of a new eruption after evaluating an increased swarm of earthquakes around the island's second largest volcano.
地質學家探測到一個新的高風險爆發，在評估島上的第二大火山的地震群增加之後。
Pall Einarsson, a professor of geophysics at the University of Iceland, says the area around Bárdarbunga is showing signs of increased activity, which provides "good reason to worry".

He told the country's national TV station that a low number of seismometer measuring devices in the area is making it more difficult to determine the scale and likely outcome of the current shifts.

But he said there was "every reason to worry" as the sustained earthquake tremors to the north east of the remote volcano range are the strongest recorded in recent times and there was "no doubt" the lava was rising.

The geologist complained that the lack of coverage from measuring devices means he cannot accurately detect the depth and exact location of the increased number of localised earth movements.

"This is the most active area of the country if we look at the whole country together," he told the Icelandic TV News. "There is no doubt that lava there is slowly growing, and the seismicity of the last few days is a sign of it.

"We need better measurements because it is difficult to determine the depth of earthquakes because it is in the middle of the country and much of the area is covered with glaciers."

Respected volcano watcher Jón Frímann, said on his volcano watch blog: "After the Eyjafjallajökull volcano eruption in the year 2010 it seems that geologists in Iceland take earthquake swarms more seriously then they did before."

He explained the Icelandic Met Office had on Sunday warned of the increased risk of a eruption in north-west side of Vatnajökull glacier due to the high earthquake activity in the area, and added: "It is clear that only time is going to tell us if there is going to be a eruption in this area soon or not."

The last recorded eruption of Bárdarbunga was in 1910, although volcanologists believe its last major eruption occurred in 1477 when it produced a large ash and pumice fallout. It also produced the largest known lava flow during the past 10,000 years on earth.

It is the second largest volcano on Iceland and is directly above the mantle plume of molten rock.

By comparison, Bárdarbunga dwarves the Eyjafjallajökull volcano, which shutdown most of Europe's airspace last year after its ash cloud drifted across the continent's skies.
http://www.sott.net/articles/show/223419-Icelandic-Volcano-Set-to-Erupt-

冰島第二大火山可能爆發
(商台)2011年2月10日 星期四 10:26
冰島第二大火山「巴達本加火山」活動加劇，科學家警告爆發機會可能越來越高。冰島一位大學教授說，最近這個位於中部的火山，地殼活動是有記錄以來最強，顯示火山内的熔岩水平正在上升，由於缺乏測量儀器，無法準確探測地殼活動的深度和方位，要探測火山活動的規模及可能帶來的後果，變得更加困難。「巴達本加火山」最近一次爆發在一百年前。 去年四月，冰島南部的「埃亞菲亞德拉火山」爆發，噴出的火山灰，一度癱瘓歐洲的航空交通服務。
http://hk.news.yahoo.com/article/110210/18/mmoy.html

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