FOUR PANELS (IMAGE) Princeton University Caption The study used GPS observations of surface uplift caused by lake drainage events. Above, meltwater lakes on the surface (left) empty through fractures in the ice sheet (right). Water from surface melting can act as a lubricant that loosens the ice sheet’s grip on the ground. Credit Photos from Sentinel-2 imagery Usage Restrictions No restrictions. License Public Domain 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.