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| This image provided by the Byrd Polar Research Center, Columbus, Ohio, taken July 25, 2008, shows a growing giant crack and an 11-square-mile chunk of ice hemorrhaging off a prominent glacier in northern Greenland. The crack, at center, right, is seven miles long and about half a mile wide. It is about half the width of the 500 square mile floating part of the glacier. If the cracking continues, the floating part of the glacier could lose up to one third of its size. (AP Photo/Byrd Polar Research Center) |
See more images at the University of Ohio
WASHINGTON (AP) — In northern Greenland, a part of the Arctic that had seemed immune from global warming, new satellite images show a growing giant crack and an 11-square-mile chunk of ice hemorrhaging off a major glacier, scientists said Thursday.
And that’s led the university professor who spotted the wounds in the massive Petermann glacier to predict disintegration of a major portion of the Northern Hemisphere’s largest floating glacier within the year.
If it does worsen and other northern Greenland glaciers melt faster, then it could speed up sea level rise, already increasing because of melt in sourthern Greenland.
The crack is 7 miles long and about half a mile wide. It is about half the width of the 500 square mile floating part of the glacier. Other smaller fractures can be seen in images of the ice tongue, a long narrow sliver of the glacier.
“The pictures speak for themselves,” said Jason Box, a glacier expert at the Byrd Polar Research Center at Ohio State University who spotted the changes while studying new satellite images. “This crack is moving, and moving closer and closer to the front. It’s just a matter of time till a much larger piece is going to break off…. It is imminent.”