Basal Exposure to Warm Ocean Waters (IMAGE) Proceedings of the National Academy of Sciences Caption Basal exposure to warm ocean waters is a large threat to the stability of ice sheets. Credit Image credit: Jörg Pross 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.