Antarctic Ice Core Sample Sites (image) Desert Research Institute Caption Locations of Antarctic ice core sites used for volcanic sulfate aerosol deposition reconstruction (right); a DRI scientist examines a freshly drilled ice core in the field before ice cores are analyzed in DRI's ultra-trace ice core analytical laboratory. Credit M. Sigl Usage Restrictions Please contact Justin Broglio prior to photo use. Additional photos are available. 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.