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Did the huge Greenland glacier break apart because of global warming? Maybe not. (+video)

An ice island about twice the size of Manhattan broke away from Greenland's Petermann Glacier last week, but the calving was likely caused by ocean currents, not global warming.

What an amazing sight to see! "Small" chunk of the massive Petermann Ice Island. This "berg" is approximately 3 miles long and 2.8 miles wide. Wow, that's nearly 5 times the size of Battle Island!
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Petermann glacier, a 70 km (43 mile) long tongue of ice that flows into the Arctic Ocean in northwest Greenland, recently calved an “ice island” approximately 130 square kilometers (50 sq. miles) — about twice the area of Manhattan.

The image above, acquired by NASA’s Terra satellite, shows the ice island as it drifts toward the ocean five days after breaking off the main glacier.

And if you want an idea of what a slab of ice this large looks like up close, here’s a video taken by researchers on approach to a smaller chunk of the 2011 island:

Petermann glacier has been known for birthing massive ice islands; previously in August 2010 an even larger island broke away from the glacier, measuring 251 square kilometers (97 sq. miles). That slab of ice eventually drifted into the northern Atlantic and was even visible from the Space Station a year later!

 Read: Manhattan-Sized Ice Island Seen From Space


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