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Flow of the Amery Ice Shelf and its tributary glaciers
conference contribution
posted on 2023-05-23, 07:52 authored by Pittard, ML, Jason RobertsJason Roberts, Roland WarnerRoland Warner, Benjamin Galton-FenziBenjamin Galton-Fenzi, Christopher WatsonChristopher Watson, Richard ColemanRichard ColemanThe 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 ConferenceEditors
PA Brandner, BW PearcePagination
605-608ISBN
978-0-646-58373-0Department/School
Institute for Marine and Antarctic StudiesPublisher
Curran Associates, Inc.Place of publication
AustraliaEvent title
18th Australasian Fluid Mechanics ConferenceEvent Venue
Launceston, TasmaniaDate of Event (Start Date)
2012-12-03Date of Event (End Date)
2012-12-07Rights statement
Copyright 2012 Leishman AssociatesRepository Status
- Restricted