Antarctic Earthquakes Shake at Glacial Speed <br /> (LiveScience.co

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LiveScience.com - Wide rivers of ice, called ice streams, flow through relatively

slow-moving polar ice sheets, en route to the sea. Glaciologists had

assumed that ice streams just creep steadily along-until one was

recently shown to pack a powerful one-two punch, generating seismic

waves twice a day.

 

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