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Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula

Bentley, M.J.; Hodgson, D.A.; Sugden, D.E.; Roberts, S.J.; Smith, J.A.; Leng, M.J.; Bryant, C. 2005 Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula. Geology, 33 (3). 173-176. 10.1130/G21203.1

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Abstract/Summary

The recent collapse of several Antarctic Peninsula ice shelves has been linked to rapid regional atmospheric warming during the twentieth century. New high-resolution lake sediment records of Holocene ice-shelf behavior show that the George VI Ice Shelf was absent beginning ca. 9595 calibrated (cal.) yr B.P., but reformed by ca. 7945 cal. yr B.P. This retreat immediately followed a period of maximum Holocene warmth that is recorded in some ice cores and occurred at the same time as an influx of warmer ocean water onto the Antarctic Peninsula shelf. The absence of the ice shelf suggests that early Holocene ocean-atmosphere variability in the Antarctic Peninsula was greater than that measured in recent decades.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1130/G21203.1
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Signals in Antarctica of Past Global Changes
ISSN: 0091-7613
Additional Keywords: ice shelves, Antarctic Peninsula, Holocene, paleoclimate, Circumpolar Deep Water
NORA Subject Terms: Glaciology
Earth Sciences
Date made live: 17 Dec 2007 11:24
URI: http://nora.nerc.ac.uk/id/eprint/1631

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