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An Ice berg the size of Manhattan is now drifting. Japans Tsunami broke off 50 sq. mi. of ice off the Sulzberger Ice Shelf.
Waves generated by the massive March 2011 undersea earthquake off Japan traveled 8000 mi. to chop 50 sq. mi. of ice off the Sulzberger Ice Shelf. NASA and ESA satellites captured imagery of the break. Ice may have been weakened by climate change