Estimated Mass Balance (IMAGE) American Geophysical Union Caption Estimated mass balance (1994-2013) for surveyed and unsurveyed glaciers in the most densely glacierized subregion of Alaska. The inset shows the entire region. Black lines indicate survey flight lines. Credit Chris Larsen 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.