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 E-Mail IMAGE: Satellite imagery of the Amery Ice Shelf in East Antarctica. The blue lines represent the movement of the ice as it flows from the continent to the edge of the. view more  Credit: Shujie Wang, Penn State When a block of ice the size of Houston, Texas, broke off from East Antarctica s Amery Ice Shelf in 2019, scientists had anticipated the calving event, but not exactly where it would happen. Now, satellite data can help scientists measure the depth and shape of ice shelf fractures to better predict when and where calving events will occur, according to researchers. Ice shelves make up nearly 75% of Antarctica s coastline and buttress or hold back the larger glaciers on land, said Shujie Wang, assistant professor of geography at Penn State. If the ice shelves were to collapse and Antarctica s glaciers fell or melted into the ocean, sea levels would rise by up to 200 feet.

United statesWest virginiaQiusheng wuMarco tedescoShujie wangPatrick alexanderGoddard institute for spaceAppalachian state universityEnvironmental systems instituteLamont doherty earth observatory at columbia universityUniversity of tennesseeNational science foundationEast antarcticaAmery ice shelfEnvironmental systemsLand elevation satellite