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Flow of the Amery Ice Shelf and its tributary glaciers

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.

History

Publication title

Proceedings of the 18th Australasian Fluid Mechanics Conference

Editors

PA Brandner, BW Pearce

Pagination

605-608

ISBN

978-0-646-58373-0

Department/School

Institute for Marine and Antarctic Studies

Publisher

Curran Associates, Inc.

Place of publication

Australia

Event title

18th Australasian Fluid Mechanics Conference

Event Venue

Launceston, Tasmania

Date of Event (Start Date)

2012-12-03

Date of Event (End Date)

2012-12-07

Rights statement

Copyright 2012 Leishman Associates

Repository Status

  • Restricted

Socio-economic Objectives

Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts)

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