Pulling ground device (IMAGE) Stanford University Caption Anna Broome pulling the radar/radiometer she built using ORCA behind a snowmobile near Summit Station in Greenland. (Image credit: Thomas Teisberg) Credit (Image credit: Thomas Teisberg) Usage Restrictions With credit License Original 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.