Pavlof Volcano (IMAGE) Seismological Society of America Caption Alaska's Pavlof volcano in 2013, with ash eruption plume and steam from melting snow and ice. Credit Theo Chesley/ Alaska Volcano Observatory/ USGS Usage Restrictions Please include full credit information 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.