Two lakes beneath the ice in Greenland, gone within weeks

Researchers discovered craters left behind when two sub-glacial lakes in Greenland drained away -- an indication that the natural plumbing system beneath the ice sheet is overflowing with meltwater. One lake once held billions of gallons of water and emptied to form a mile-wide crater in just a few weeks. The other lake has filled and emptied twice in the last two years.



from Oceanography News -- ScienceDaily http://ift.tt/1zwVgG3

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