Bathymetric Map Showing Earthquake Epicenters (IMAGE) Columbia Climate School Caption Dots represent earthquakes. Dense cluster to the bottom is the presumed downflow pipe. Nearer top are biovents, where hot water flows out. Credit Courtesy Lamont-Doherty Earth Observatory 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.