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Wednesday, December 12, 2007

Thin Crust Melting Greenland Ice?

Imagine that: a natural cause for ice melting in Greenland.

From Ohio State University Research News:

Scientists have discovered what they think may be another reason why Greenland 's ice is melting: a thin spot in Earth's crust is enabling underground magma to heat the ice.

They have found at least one “hotspot” in the northeast corner of Greenland -- just below a site where an ice stream was recently discovered.

The researchers don't yet know how warm the hotspot is. But if it is warm enough to melt the ice above it even a little, it could be lubricating the base of the ice sheet and enabling the ice to slide more rapidly out to sea.

HT to Free Republic.


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