Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change

Anne M. Le Brocq, Alun L. Hubbard, Christopher J. Fogwill, Tibor J. Dunai, David E. Sugden, Stewart P. H. T. Freeman, Michael J. Bentley

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

129 Dyfyniadau (Scopus)

Crynodeb

The retreat history of the West Antarctic Ice Sheet (WAIS) since the Last Glacial Maximum is important for understanding the process of rapid deglaciation, constraining models that seek to predict the future trajectory of the ice sheet, and for estimating rates of sea-level change. Here we report new glacial geologic data from the southwestern Weddell Sea embayment that demonstrate that this part of the WAIS was thinner than previously suggested, and that there was progressive thinning of the ice sheet by 230-480 m since ca. 15 ka. We use geomorphological data and a numerical ice sheet model to reconstruct the ice sheet in the Weddell Sea at the Last Glacial Maximum. The volume of this ice would have added between 1.4 and 2.0 m to postglacial sea-level rise and would not have been sufficient to contribute significantly to meltwater pulse 1A, a rapid rise in sea level similar to 14,200 yr ago.
Iaith wreiddiolSaesneg
Tudalennau (o-i)411-414
Nifer y tudalennau4
CyfnodolynGeology
Cyfrol38
Rhif cyhoeddi5
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - Mai 2010

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

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