Thursday, March 01, 2007
Seeing Greenland
New imaging technique shows how fast inland ice is melting.
By David Talbot
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Thanks to new image processing technology, fine-grained features of ice flow are visible within this eyedropper-shaped 600-by-50-kilometer ice formation in Greenland.
Credit: University of Colorado at Boulder |
There's enough frozen water in Greenland to raise global sea levels seven meters, and enough in Antarctica to raise levels 65 meters. But the rate of melting is poorly understood, partly because ice-sheet surfaces look so inscrutably white and featureless in ordinary satellite images and to the human eye. Now, a new image-processing technique gives a clearer view of critical features of inland ice.
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Massachusetts Institute of Technology