CRI听力：Melting ice causes glacial lake to swell and empty suddenly in Chile
Melting ice in southern Chile has caused a glacial lake to swell and then empty suddenly, sending a "tsunami" rolling through a river. 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.
"This is undoubtedly magnified by the recent warming that has been observed not only in this zone, but all over the planet."
The water bored an 8-kilometer tunnel through the glacier and emptied into the Baker River on April 6.
The scientist said the lake was nearly full again by late Wednesday.
Casassa said temperatures were unusually high during the recent Southern Hemisphere summer. He added that the phenomenon occurs periodically during this season.
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