A Photo of Iceberg Rafting (IMAGE) University of Bristol Caption Large episodes of iceberg rafting in the past are thought to play a role in the variations of Atlantic Ocean circulation and climate changes during the deglacial period. Credit Dr Hong Chin Ng, University of Bristol Usage Restrictions Image is for single use only to illustrate this press release and must not be archived 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.