Magazine article Geographical

Sea Ice Reinforcing Antarctic Ice Sheet

Magazine article Geographical

Sea Ice Reinforcing Antarctic Ice Sheet

Article excerpt

Sea ice reinforcing Antarctic ice sheet: Sea ice forming on the base of part of the Larsen Ice Shelf could be helping to prevent it from breaking up in response to rising temperatures, according to a paper published in Geophysical Research Letters.

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Formed largely of freshwater glacial ice, the Larsen Ice Shelf is a series of three shelves occupying distinct embayments along the coast of the Antarctic Peninsula and are named A, 13 and C according to their location. Scientists from the British Antarctic Survey (BAS) identified sea ice forming along the bottom of Larsen C, the largest of the three, when their ten-year radar dataset from the ice shelf suggested that their equipment had failed. Based on previous experience of this scenario, combined with scientific modelling of sea-ice formation, they discovered that the places where the radar seemed to have stop working coincided with the parts of the shelf where ice could have formed from seawater. …

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