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Lookup NU author(s): Dr Bethan DaviesORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20ka, 15ka, 10ka and 5ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorit. © 2014 The Authors.
Author(s): Bentley MJ, Ocofaigh C, Anderson JB, Conway H, Davies B, Graham AGC, Hillenbrand C-D, Hodgson DA, Jamieson SSR, Larter RD, Mackintosh A, Smith JA, Verleyen E, Ackert RP, Bart PJ, Berg S, Brunstein D, Canals M, Colhoun EA, Crosta X, Dickens WA, Domack E, Dowdeswell JA, Dunbar R, Ehrmann W, Evans J, Favier V, Fink D, Fogwill CJ, Glasser NF, Gohl K, Golledge NR, Goodwin I, Gore DB, Greenwood SL, Hall BL, Hall K, Hedding DW, Hein AS, Hocking EP, Jakobsson M, Johnson JS, Jomelli V, Jones RS, Klages JP, Kristoffersen Y, Kuhn G, Leventer A, Licht K, Lilly K, Lindow J, Livingstone SJ, Masse G, McGlone MS, McKay RM, Melles M, Miura H, Mulvaney R, Nel W, Nitsche FO, O'Brien PE, Post AL, Roberts SJ, Saunders KM, Selkirk PM, Simms AR, Spiegel C, Stolldorf TD, Sugden DE, van der Putten N, van Ommen T, Verfaillie D, Vyverman W, Wagner B, White DA, Witus AE, Zwartz D
Publication type: Article
Publication status: Published
Journal: Quaternary Science Reviews
Year: 2014
Volume: 100
Pages: 1-9
Print publication date: 15/09/2014
Online publication date: 22/07/2014
Acceptance date: 18/06/2014
Date deposited: 22/08/2022
ISSN (print): 0277-3791
ISSN (electronic): 1873-457X
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.quascirev.2014.06.025
DOI: 10.1016/j.quascirev.2014.06.025
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