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Antarctic glaciers News

'Extreme' changes in eight of Antarctic's largest glaciers

According to a new study, the grounding line, where Antarctica's glaciers become floating ice shelves, is receding as much as 600 feet per year, bolstering fears of worst-case sea level rise.

‘Unstoppable' loss of Antarctic glaciers prompts sealevel warning

Irvine - The rapidly melting West Antarctic Ice Sheet is in an irreversible state of decline according to the latest NASA study. As a result, the "ice-dam" preventing glaciers in the area melting into the sea will ultimately disappear.

Scientists argue reasons for Antarctic sea ice expansion

With records going back to 1979, there is little dispute that Arctic ice is in retreat but up till now scientists have had difficulty in reconciling an expansion of Antarctic sea ice with global warming.
 

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A researcher uses heavy duty cutting equipment to take samples from boulders left behind at the Pine...
A researcher uses heavy duty cutting equipment to take samples from boulders left behind at the Pine Island Glacier in Antarctica from the last time it underwent rapid retreat and thinning 8000 years ago
Florian Wobbe, British Antarctic Survey
Ice melt at the grounding line contributes to seawater and thus sea levels  but the larger effect is...
Ice melt at the grounding line contributes to seawater and thus sea levels, but the larger effect is to send more ice above it out into the water, where it also drives up sea level. When sea bottom behind the grounding line, under the ice, slopes downward going inland, it exacerbates the process, which can become unstable, perpetually pushing ice out to sea.
AntargticGlaciers.org.
View of the Riiser-Larsen Ice Shelf in Antarctica.
View of the Riiser-Larsen Ice Shelf in Antarctica.
By Ben Holt – National Aeronautics and Space Administration, via Wikimedia Commons

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