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Event Details

Glacier Melting event report

Category: Glacier Melting
Observation: 11.04.2008
Continent: South-America
Country: Chile
State: Aisén del General Carlos Ibáñez del Campo
Area: Colonia glacier, Cachet Lake, Baker River
Location:
Severity: Hight
Event details
Melting ice in southern Chile caused a glacial lake to swell and then empty suddenly, sending a ''tsunami'' rolling through a river, a scientist said Thursday. No one was injured in the remote region. Glacier scientist Gino Casassa said the melting of the Colonia glacier, which he blamed on rising world temperatures, filled the Cachet Lake and increased pressure on the ice sheet. The water bored a five-mile tunnel through the glacier and finally emptied into the Baker River on April 6. ''The remarkable thing is that the mass of water moved against the current of the river,'' Casassa said the Center for Scientific Studies in the southern city of Valdivia. "It was a real river tsunami.'' The lake was nearly full again by late Wednesday, he said. Casassa said temperatures were unusually high during the recent Southern Hemisphere summer. ''This is a phenomenon that occurs periodically during the summer season, caused by the melting of large masses of ice that swell some lakes,'' he said. "The basic cause is global warming.'' The Tempano lake in Chile's Bernardo O'Higgins National Park abruptly disappeared last year, and has since recovered just some of its former volume.
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