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Sci Tech    H3'ed 4/23/16

Sudden drainage, via massive chasm, of Subglacial lakes in Greenland described as catastrophic

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Sudden drainage, via massive chasm, of Subglacial lakes in Greenland described as catastrophic.

“In some ways, ice behaves like Silly Putty—if you push up on it slowly, it will stretch; if you do it with enough force, it will crack,” said Stevens. “Ordinarily, pressure at the ice sheet surface is directed into the lake basin, compressing the ice together. But, essentially, if you push up on the ice sheet and create a dome instead of a bowl, you get tension that stretches the ice surface apart. You change the stress state of the surface ice from compressional to tensional, which promotes crack formation.”

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Born in Long Island public school year in Sweden as exchange student, went to Harvard one year, Cooper Union in NYC as Art student. Have two children, one of whom is rock mogul, the other has three daughters, one of whom has two daughters, making me (more...)
 
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