Ice Sheets' Potential Contributions to Sea-Level Rise (image) Boston College Share Print E-Mail Caption How much warming oceans and melting ice masses would raise sea levels is a crucial question. A team of researchers conclude land-based parts of the East Antarctic Ice Sheet -- the largest projected contributor to sea-level rise -- remained intact during the Pliocene epoch, when carbon dioxide levels were last at their modern value for an extended period of time and global temperature was 2-3 degrees C warner. Credit Jeremy Shakun/ Boston College- Usage Restrictions Must use credit with image reproduction. Share Print E-Mail 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.