Collecting Pore Water (IMAGE) Desert Research Institute Caption DRI's Alison Murray, Ph.D., and doctoral student Paula Matheus Carnevali collect pore water for geochemical analyses from a thermokarst lake sediment core sampled near Barrow, Alaska. Credit Kevin Hand, NASA JPL 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.