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Flow of the Amery Ice Shelf and its tributary glaciers


Pittard, ML and Roberts, JL and Warner, RC and Galton-Fenzi, BK and Watson, CS and Coleman, R, Flow of the Amery Ice Shelf and its tributary glaciers, Proceedings of the 18th Australasian Fluid Mechanics Conference, 3-7 December 2012, Launceston, Tasmania, pp. 605-608. ISBN 978-0-646-58373-0 (2013) [Refereed Conference Paper]

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Copyright 2012 Leishman Associates

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The Amery Ice Shelf (AIS) is a major ice shelf that drains approximately 16% of the East Antarctic Ice Sheet. Here we use a sequence of visible spectrum Landsat7 satellite images to track persistent surface features over the southern portion of the AIS and its three major tributary glaciers. A spatially incomplete velocity field is calculated by comparing the distances features have moved between image pairs. Key features of the flow field including the vorticity and strain rate distributions are discussed. Our velocities agree with results from recent compilation of satellite derived velocities and available Global Position System (GPS) measurements. To assess change, we compare the yearly average velocities from image pairs in 2006 and 2010 over the study region. We find the velocities show minimal changes with the exception of the Mellor Glacier which has increased.

Item Details

Item Type:Refereed Conference Paper
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Glaciology
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts)
UTAS Author:Pittard, ML (Mr Mark Pittard)
UTAS Author:Roberts, JL (Dr Jason Roberts)
UTAS Author:Warner, RC (Dr Roland Warner)
UTAS Author:Galton-Fenzi, BK (Dr Ben Galton-Fenzi)
UTAS Author:Watson, CS (Dr Christopher Watson)
UTAS Author:Coleman, R (Professor Richard Coleman)
ID Code:86477
Year Published:2013
Deposited By:Geography and Environmental Studies
Deposited On:2013-09-18
Last Modified:2014-08-12

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