Antarctic crevasses from the air (IMAGE) University of Leeds Caption Crevasses on Antarctic ice shelves change the material properties of the ice and influence their flow-speed. Research shows this coupling to be relevant but more complicated than previously thought for the Thwaites Glacier Ice Tongue. Credit Dr Anna Hogg, University of Leeds Usage Restrictions Please use 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.