Permafrost in Alaska (IMAGE) University of Massachusetts Amherst Caption This is thawing permafrost on the North Slope along the Sagavanirktok River near Deadhorse, Alaska. Credit Courtesy of Kevin Schaefer of the National Snow and Ice Data Center, University of Colorado Boulder Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.