Ocean forced variability of the main East Antarctic Glacier

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Title: Ocean forced variability of the main East Antarctic Glacier
Authors: Roberts, J
Galton-Fenzi, B
Paolo, F
Donnelly, C
Gwyther, D
Young, D
Warner, R
Greenbaum, J
Fricker, H
Payne, AJ
Cornford, S
Le Brocq, A
Van Ommen, T
Blankenship, DD
Siegert, MJ
Item Type: Journal Article
Abstract: A large volume of the East Antarctic Ice Sheet drains through the Totten Glacier (TG) and is thought to be a potential source of substantial global sea level rise over the coming centuries. We show the flow and surface height of floating part of TG, which buttresses the grounded component, have varied substantially over two decades (1989–2011), with variations in surface height and basal melt rates highly anti-correlated (r=0.70, p <0.05). Coupled glacier/ice-shelf simulations confirm ice flow and thickness respond to both basal melting of the ice shelf and grounding on bed obstacles. We conclude the observed variability of TG is primarily ocean-driven and enhanced ice-sheet dynamism, leading to upstream grounded ice loss, will occur from the region with ocean warming.
Date of Acceptance: 7-Feb-2017
URI: http://hdl.handle.net/10044/1/44394
ISSN: 0305-8719
Publisher: Geological Society
Journal / Book Title: Special Publication - Geological Society of London
Sponsor/Funder: British Council (UK)
Funder's Grant Number: ICECAP-2
Keywords: Geochemistry & Geophysics
04 Earth Sciences
Publication Status: Accepted
Appears in Collections:Centre for Environmental Policy
Faculty of Natural Sciences

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