پسروی یخچال ها ی قطبی Retreating Glaciers

 Satellite image of the Jakobshavn Glacier, Greenland's largest and fastest moving tidewater glacier, which is retreating under conditions similar to those Briner studied in the Canadian Arctic. NASA Landsat Geocover image.

 Study shows that Ice Sheets Can Retreat in a Geologic Instant

 Glaciers Are Capable of Rapid Retreat

Modern glaciers, such as those making up the Greenland and Antarctic ice sheets, are capable of undergoing periods of rapid shrinkage or retreat, according to new findings by paleoclimatologists at the University at Buffalo. 

The paper, published on June 21 in Nature Geoscience, describes fieldwork demonstrating that a prehistoric glacier in the Canadian Arctic rapidly retreated in just a few hundred years. 

The proof of such rapid retreat of ice sheets provides one of the few explicit confirmations that this phenomenon occurs. 

Should the same conditions recur today, which the UB scientists say is very possible, they would result in sharply rising global sea levels, which would threaten coastal populations.