Marine ice sheets (IMAGE) University of Barcelona Caption The melting of these glaciers caused an intense and prolongued change in ocean circulation, leading to a warmer interglacial period with less ice than the present one. Credit Pere Busquets Usage Restrictions Credit must be given to the creator. License CC BY 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.