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8 April 2010
Coast of Alaska: Accelerated Erosion 2002-2007
A five-year study in Alaska led by the U.S. Geological Survey (USGS) found that shoreline erosion along a 40-mile stretch of the Beaufort Sea has been accelerating from about 20-feet per year fifty years ago, to 45-feet per year by 2007. The research makes obvious the importance of considering the specific properties of the earthen materials exposed to erosive forces. In this case, the land contains permafrost, a consituent of …