Totten Glacier (IMAGE) University of Texas at Austin Caption Totten Glacier, East Antarctica's largest outlet of ice, is unstable and has contributed significantly to rising sea levels in the past, according to new research. Credit The University of Texas at Austin Usage Restrictions credit 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.