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Antarctic Ice Shelf Tearing Apart at the Seams

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Published on Mar 26, 2012

In this series of Landsat images of the outer edge of Pine Island Glacier from 1972 to 2011, you can see how the coastline (red line) advances seaward (to the left), then shifts back inland as large masses of ice calve off, and then starts the cycle over again. Meanwhile, the northern shear margin (above center), where the glacier clings to neighboring ice or rock, fractures and retreats. Produced by Joseph MacGregor and Ginny Catania, (Institute for Geophysics / University of Texas at Austin). Read the press release "West Antarctic Ice Shelves Tearing Apart at the Seams" at: http://www.jsg.utexas.edu/news/?p=3471

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