Study Says Iceberg breaks off from Greenland's Petermann Glacier

According to scientists The Petermann Glacier in northern Greenland has calved an iceberg twice the size of Manhattan. NASA satellite images show the island breaking off a tongue of ice that extends at the end of the glacier. Glaciers do calve icebergs obviously, other than the level of the changes to the Petermann Glacier in current years has taken many experts by shock.

Some other observers have gone further. "It's dramatic. It's disturbing, University of Delaware's Andreas Muenchow told the Associated Press. In 2010 an ice island measuring 250 square km broke off the same glacier. According to the Canadian Ice Service Icebergs from the Petermann Glacier sometimes get to the coast off Newfoundland in Canada, posturing a danger to shipping and navigation.

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