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Satellite images made into this video show polynyas (open-water regions) forming at the ends of basal channels beneath shear margins of the East Getz Ice Shelf. A new study in Science Advances illuminates how warm ocean water and ice dynamics conspire to weaken the edges of Antarctica’s ice shelves, making them more vulnerable to breakup.
Image and videos: Karen Alley/Wooster and NASA MODIS/MODIS Antarctic Ice Shelf Image Archive/NSIDC.
ScienceAdvances paper (may be behind paywall):