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SUMMARY:The Holocene history of Thwaites and Pine Island glaciers\, West A
 ntarctica\, revealed through subaerial and subglacial archives - Keir Nich
 ols\, Imperial College London
DTSTART:20231128T120000Z
DTEND:20231128T130000Z
UID:TALK207535@talks.cam.ac.uk
CONTACT:Dr Rachael Rhodes
DESCRIPTION:Known collectively as the “weak underbelly of the West Antar
 ctic Ice Sheet'' owing to their vulnerability to future warming\, Thwaites
  and Pine Island glaciers contain enough ice to raise global sea level by 
 over 1 metre. Understanding the past behaviour of major Antarctic ice stre
 ams helps reduce uncertainty when projecting the future of the Antarctic i
 ce sheets under different climate scenarios. To explore the Holocene histo
 ry of these ice streams\, members of the US-UK International Thwaites Glac
 ier Collaboration (ITGC) collected geologic material from both above and b
 eneath ice in the Thwaites and Pine Island glacier catchment. Rare isotope
 s (in situ-produced cosmogenic nuclides) measured in these rocks show that
  these glaciers have been thicker and\, perhaps most interestingly\, thinn
 er than present in the Holocene\, with implications for the reversibility 
 of ongoing ice sheet mass loss and grounding line retreat. \n
LOCATION:Department of Earth Sciences\, Tilley Lecture Theatre
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