West Antarctica ice sheet divide (IMAGE) University of California - Berkeley Caption Blustery conditions at the West Antarctica ice sheet divide, a ridge where a 3.4-kilometer borehole was drilled to acquire ice cores. The tent protected the equipment and scientists as they measured temperatures down the borehole in 2011 and 2014. Credit US Geological Survey 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.