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Technologies for retrieving sediment cores in Antarctic subglacial settings

Hodgson, Dominic A.; Bentley, Michael J.; Smith, James A.; Klepacki, Julian; Makinson, Keith; Smith, Andrew M.; Saw, Kevin; Scherer, Reed; Powell, Ross; Tulaczyk, Slawek; Rose, Mike; Pearce, David; Mowlem, Matt; Keen, Peter; Siegert, Martin J.. 2016 Technologies for retrieving sediment cores in Antarctic subglacial settings. Philosophical Transactions of the Royal Society of London, A, 374 (2059). 20150056. 10.1098/rsta.2015.0056

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© 2016 The Royal Society This document is the author’s final manuscript version of the journal article following the peer review process. Some differences between this and the publisher’s version may remain. You are advised to consult the publisher’s version if you wish to cite from this article. http://rspb.royalsocietypublishing.org
RSTA20150056p(3).pdf - Accepted Version

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Abstract/Summary

Accumulations of sediment beneath the Antarctic Ice Sheet contain a range of physical and chemical proxies with the potential to document changes in ice sheet history and to identify and characterize life in subglacial settings. Retrieving subglacial sediments and sediment cores presents several unique challenges to existing technologies. This paper briefly reviews the history of sediment sampling in subglacial environments. It then outlines some of the technological challenges and constraints in developing the corers being used in sub-ice shelf settings (e.g. George VI Ice Shelf and Larsen Ice Shelf), under ice streams (e.g. Rutford Ice Stream), at or close to the grounding line (e.g. Whillans Ice Stream) and in subglacial lakes deep under the ice sheet (e.g. Lake Ellsworth). The key features of the corers designed to operate in each of these subglacial settings are described and illustrated together with comments on their deployment procedures.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1098/rsta.2015.0056
Programmes: BAS Programmes > BAS Programmes 2015 > Palaeo-Environments, Ice Sheets and Climate Change
ISSN: 1364-503X
Date made live: 21 Dec 2015 11:04 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/510924

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