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RE: Chaiten volcano
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Chile's Chaiten volcano has been placed under red alert due to an increase in seismic activity for three weeks, the Chilean government said.
The volcano in southern Chile became active in May 2008 after being dormant for more than 9,000 years.

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A study into ash fallout from the biggest volcanic eruption in almost 20 years has shown that the impact of past eruptions is likely to have been significantly underestimated as so much of the evidence quickly disappears, Oxford University scientists report.
The study focuses on the Chaitén volcano in southern Chile that began to erupt explosively on 2 May 2008. For six days afterwards the volcano pumped huge volumes of ash high into the atmosphere before its activity began to decline to a low intensity eruption still going on today.
With emergency funding from the UKs Natural Environment Research Council, a team of scientists from the University of Oxford was quickly dispatched to map out the distribution of ash from the eruption and to study its impacts on the local environment, in collaboration with Argentinian scientists.
A first report of their findings is published in the Journal of Geophysical Research.

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L

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Chaiten volcano dome collapse
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A large-scale explosive dome collapse took place at Chaitén between late morning and early afternoon today (19 January 2009), beginning at around 10:59 local time.

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Chile's government said on Friday the area surrounding the Chaiten Volcano, which erupted in May for the first time in thousands of years, was still not safe and that a decision regarding the future of the town of Chaiten would be made in coming days. The Volcano, only 10 km from the town, started spewing ash, gas and molten rock on May 2, forcing the evacuation of about 7,000 residents.

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Chaiten volcano has spewed a column of ash and smoke 6 kilometres into the air, coating a nearby village with ash.
The volcanic activity was preceded by a series of medium-strength earthquakes.

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Chaitén Volcano in southern Chile is erupting again. The new eruption is producing thick ash clouds and launching rocks.
The 1,000m tall Chaiten volcano, located some 1,300km south of Santiago, first began to erupt in May after lying dormant for centuries.

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After nine thousand years of slumber, Chaitén volcano in southern Chile awoke violently last week. On May 2, the volcano began erupting clouds of hot white ash. The eruption sent the clouds tens of kilometres into the sky and across the Andes into Argentina.

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NASAs Landsat satellite captured Chiles Chaitén Volcano on February 21, 2000.

chaiten_etm_2000
Credit NASA

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Chaiten Volcano, Chile
  arwp.gifHI-RES JPEG (Size: 830 kb) arwp.gifHI-RES TIFF (Size: 3742 kb)
Credits: ESA

Chiles Chaiten Volcano is shown spewing ash and smoke (centre left of image) into the air for hundreds of km over Argentinas Patagonia Plateau in this Envisat image acquired on 5 May 2008.

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It had lain dormant for thousands of years but Chaiten, the snow capped volcano in Chiles Patagonian region, burst back into life, forcing 4,500 people to flee their homes on Friday.

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Chaiten
Expand (132kb, 800 x 600)

Latitude: 42°50'11"S, Longitude: 72°38'45"W

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