Thwaites Glacier Speed (image) University of Washington Share Print E-Mail Caption Thwaites Glacier reaches speeds of more than 33 feet (11 m) per day. The black box shows the location of four subglacial lakes that drained in 2013, increasing the glacier's speed by about 10 percent. Credit Ben Smith/University of Washington Usage Restrictions With credit 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.