Sentinels warn of dangerous ice crack
16 February 2017
Following the appearance of a large crack in the ice shelf close to the Halley VI research station in Antarctica, information from the Copernicus Sentinel-1 and Sentinel-2 satellites helped to decide to close the base temporarily.
Nourished by an inflow of ice from grounded glaciers and snow accumulating on its surface, Brunt Ice Shelf is a floating ice sheet in the Weddell Sea Sector of Antarctica. The floating ice moves steadily towards the ocean, where it occasionally calves off as icebergs.
Cracks often appear on shelves as the ice deforms. However, rapidly expanding cracks indicate impending calving.
Top story on Copernicus
12 May 2017
Rapid acceleration of an Arctic glacier over the past year has been detected by the Copernicus Sentinel-1 satellites.
Sitting on Norway's Spitsbergen island in the Svalbard archipelago, the Negribreen glacier has recently seen a surge in ice surface speed, increasing from 1m to13m a day over the winter.
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