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SUMMARY:Context from marine geological records for present West Antarctic 
 Ice Sheet dynamics and implications for future change - Dr Claus-Dieter Hi
 llenbrand\, British Antarctic Survey
DTSTART:20250303T180000Z
DTEND:20250303T190000Z
UID:TALK227572@talks.cam.ac.uk
CONTACT:124546
DESCRIPTION:Satellite and field observations show that the West Antarctic 
 Ice Sheet (WAIS) is currently undergoing rapid ice loss\, thereby increasi
 ngly contributing to global sea-level rise. The direct observational recor
 d\, however\, spans just a few decades\, raising the question whether this
  “snapshot” of ice-sheet changes is representative or exceptional in a
  longer-term context. The only reliable method to establish the long-term 
 framework of WAIS variability and\, thus\, to evaluate\, if present ice lo
 ss is related to human-induced global warming\, is the reconstruction of p
 ast ice-sheet configurations from the geological record. Here I will demon
 strate how research on the marine geological imprint left by the ice sheet
  on the West Antarctic continental margin has improved our understanding o
 f past and present WAIS dynamics. This newly acquired knowledge will help 
 to evaluate the reliability of numerical models in simulating WAIS dynamic
 s and\, thus\, improve model-based predictions of future ice loss and asso
 ciated global sea-level rise.
LOCATION:Harker 1 lecture room\, Department of Earth Sciences\, Downing Si
 te
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