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Greenland Ice Sheet Loses Strength Due to Ice Stream's Effect Inside

Mar 18, 2014 03:28 PM EDT | By Justin Stock

Greenland's lone ice layer, known to be the last man standing has reportedly lost its durability a press release from The Ohio State University reported Sunday.

According to information published in Tuesday's Nature Climate Change Science Journal, scientists now anticipate ocean waters to rise at abnormal levels, that are higher than usual.

"Northeast Greenland is very cold.  It used to be considered the last stable part of the Greenland ice sheet," Michael Bevis lead investigator with Greenland's GPS network also known as GNET said in a statement. "This study shows that ice loss in the northeast is now accelerating.  So, now it seems that all of the margins of the Greenland ice sheet are unstable," Bevis said in the statement.

GNET calculates how much ice is lost by seeing how heavy its ice layers are, and determining the impact it has on the surface below the ice surface.

"This suggests a possible positive feedback mechanism whereby retreat of the outlet glacier, in part due to warming of the air and in part due to glacier dynamics, leads to increased dynamic loss of ice upstream.  This suggests that Greenland's contribution to global sea level rise may be even higher in the future," Bevis said in the statement. 

An ice stream known as the biggest one, Zachariae filters out water from inside the ice sheet, and has shifted 20 kilometers or 12.4 miles in the past 10 years the press release reported.

"The fact that the mass loss of the Greenland Ice Sheet has generally increased over the last decades is well known, but the increasing contribution from the northeastern part of the ice sheet is new and very surprising," Shfaqat Abbas Khan, a senior researcher at the Technical University of Denmark's National Space Institute said in a statement.

A second ice stream linked to an ice stream, known as the the Jakobshavn thought to be the quickest moving glacier is located in southwest Greenland, and has floated 35 kilometers, or the equivalent to 21.7 miles in the past 150 years.

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