Ice Sheet Modeling (IMAGE) DOE/Sandia National Laboratories Caption Irina Tezaur and Ray Tuminaro analyze a model of Antarctica. They are part of a Sandia National Laboratories team working to improve the reliability and efficiency of computational models that describe ice sheet behavior and dynamics. Credit Dino Vournas, Sandia National Laboratories 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.