Helicopter Deployment (image) University of Washington Share Print E-Mail Caption An instrument about to be dropped through an opening in the ice to the seafloor will record ocean bottom pressure to compare with similar data recorded by NASA's GRACE satellites. Data from GRACE, ICESat and actual water samples led to the discovery of a new pathway of freshwater in the Arctic. Credit C. Peralta-Ferriz/UW Applied Physics Laboratory Usage Restrictions Credit required Share Print E-Mail 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.