Thwaites Ice Shelf shows signs of ongoing weakening with fractures propagating in the TEIS region, linked to accelerated ice-flow and loss of pinning-point stability, according to recent satellite and field analyses. New results indicate rapid melting in crevasses and shear zones, while overall shelf melt can be lower elsewhere, yet the disintegration remains, contributing to potential sea-level rise through reduced buttressing of the glacier. Cracking the code of Thwaites ice shelf's disintegration appears to be driven by rapid retreat under its floating ice shelf, with novel observations from where the ice enters the ocean showing different processes than previously understood. The ice shelf has depleted its buttressing capacity, suggesting that Thwaites' last remaining ice shelf remains vulnerable. Thwaites Glacier thins and retreats fastest where ice-shelf channels, and this pattern continues to influence regional sea-level estimates. Ongoing analyses emphasize that even when some areas melt less, the overall disintegration contributes to long-term sea-level rise.
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Abstract. Antarctic ice shelves buttress the flow of the ice sheet but are vulnerable to increased basal melting from contact with a warming ocean and increased mass loss from calving due to changing flow patterns. Channels and similar features at the bases of ice shelves have been linked to enhanced basal melting and observed to intersect the grounding zone, where the greatest melt rates are often observed. The ice shelf of Thwaites Glacier is especially vulnerable to basal melt and grounding...
tc.copernicus.orgThe rapid retreat of Thwaites Glacier in West Antarctica appears to be driven by different processes under its floating ice shelf than researchers previously understood. Novel observations from where the ice enters the ocean show that while melting beneath much of the ice shelf is weaker than expected, melting in cracks and crevasses is much faster. Despite the suppressed melting the glacier is still retreating, and these findings provide an important step forward in understanding the...
thwaitesglacier.orgThwaites Glacier in West Antarctica — often called the “Doomsday Glacier” — is one of the fastest-changing ice–ocean systems on Earth, and its future remains a major uncertainty in global se
news.umanitoba.camelt and dynamic components. Further modeling research also suggests that the ice shelf has depleted its buttressing capacity (Gudmundsson and others, 2023), suggesting that Thwaites’ last remaining ice shelf has lost its structural integrity and is nearing the end of its life. The history of the Thwaites Eastern Ice Shelf is intricately
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