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Drilling into Antarctica's Past

The West Antarctic Ice Sheet melted rapidly around 8,000 years ago. Could that event foretell the future? ....

United Kingdom , Weddell Sea , Eric Wolff , Richard Alley , Rebecca Owen , Isobel Rowell , Pennsylvania State University , University Of Cambridge , British Antarctic , Nature Geoscience , West Antarctic Ice Sheet , British Antarctic Survey , Skytrain Ice Rise , Ronne Ice Shelf , West Antarctic Ice , Ronne Ice , Empire State , Pennsylvania State , Ice Age ,

Keeping the Paris Climate target could stop major sea level rise and ice sheet melt

German researchers say critical Antarctic ocean warming could be avoided if global temperatures are kept within the Paris Climate Agreement target. ....

Northern Territory , France General , Vanessa Teske , Weddell Sea , University Of Tasmania , Communications Earth Environment , Marine Research , Us National Snow , Intergovernmental Panel On Climate Change , Alfred Wegener Institute For Polar , Ice Data Center , Intergovernmental Panel On Climate , Paris Climate Agreement , Ronne Ice Shelf , Alfred Wegener Institute , Shared Socioeconomic Pathway , Intergovernmental Panel , Climate Change , Filchner Trough , Filchner Trough , Warm Deep Water , Communications Earth , North Atlantic ,

Progressive unanchoring of Antarctic ice shelves since 1973

Mass loss of the Antarctic Ice Sheet has been driven primarily by the thinning of the floating ice shelves that fringe the ice sheet1, reducing their buttressing potential and causing land ice to accelerate into the ocean2. Observations of ice-shelf thickness change by satellite altimetry stretch back only to 1992 (refs. 1,3–5) and previous information about thinning remains unquantified. However, extending the record of ice-shelf thickness change is possible by proxy, by measuring the change in area of the surface expression of pinning points—local bathymetric highs on which ice shelves are anchored6. Here we measure pinning-point change over three epochs spanning the periods 1973–1989, 1989–2000 and 2000−2022, and thus by proxy infer changes to ice-shelf thickness back to 1973–1989. We show that only small localized pockets of ice shelves were thinning between 1973 and 1989, located primarily in the Amundsen Sea Embayment and the Wil ....

Amundsen Sea , Oceans General , Dronning Maud , Bellingshausen Sea , Weddell Sea , Moscow University , Us Geological , Moscow University Glacier , Moscow University Ice Shelf , Extended Data , Amundsen Sea Embayment , West Antarctica , East Antarctica , Antarctic Peninsula , Prince Gustav , Bawden Ice Rise , Supplementary Information , Amundsen Sea Sector , Pine Island Glacier , Getz Ice Shelf , Marie Byrd Land , Hull Glacier , Sulzberger Ice Shelf , Swinburne Ice Shelf , Ross Ice Shelf , Steershead Ice Rise ,

A 2,000-foot-long ice core suggests potential for sudden and rapid Antarctic melting

Evidence from a 2,000-foot-long ice core shows rapid past melting — a stark warning for potential sea level rise as temperatures soar ....

United Kingdom , David Thornalley , Isobel Rowell , British Antarctic , University College London , Skytrain Ice Rise , Ronne Ice , Ice Age , West Antarctic Ice Sheet , British Antarctic Survey , Thwaites Glacier , West Antarctica , Doomsday Glacier , Skytrain Ice Rise , Antarctic Ice , Eric Wolff , British Antarctic Survey , Pce Core , Ice Sheet , Ronne Ice Shelf ,

Antarctic melting: A 2,000-foot-long ice core suggests potential for sudden and rapid ice sheet melting

Evidence from a 2,000-foot-long ice core shows rapid past melting a stark warning for potential sea level rise as temperatures soar ....

United Kingdom , United States , Ted Scambos , Isobel Rowell , David Thornalley , Eric Wolff , British Antarctic , University Of Cambridge , University Of Cambridge British Antarctic , University College London , University Of Colorado Boulder , West Antarctic Ice Sheet , Empire State Building , Ice Age , Skytrain Ice Rise , Ronne Ice Shelf , Ronne Ice , Twin Otter , British Antarctic Survey , Thwaites Glacier , West Antarctica , Doomsday Glacier ,