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Pine Island Glacier -- Crack in the shelf
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Pine Island Glacier -- Crack in the shelf

December 19, 2012
NASA's DC-8 flew over the Pine Island Glacier Ice Shelf on Oct. 14, 2011 as part of the agency's Operation IceBridge. A large, long-running crack was plainly visible across the ice shelf. The DC-8 took off on Oct. 26, 2011, to collect more data on the ice shelf and the crack. The area beyond the crack that could calve in the coming months covers about 310 square miles (800 square kilometers), IceBridge project scientist Michael Studinger said. Credit: NASA/Michael Studinger