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Multi-year monitoring of rift propagation on the Amery Ice Shelf, East Antarctica


Fricker, HA and Young, NW and Coleman, R and Bassis, JN and Minster, JB, Multi-year monitoring of rift propagation on the Amery Ice Shelf, East Antarctica, Geophysical Research Letters, 32, (2) pp. L02502. ISSN 0094-8276 (2005) [Refereed Article]

DOI: doi:10.1029/2004GL021036


We use satellite imagery from four sensors (Multi-angle Imaging SpectroRadiometer (MISR), Enhanced Thematic Mapper (ETM), and RADARSAT and ERS Synthetic Aperture Radar (SAR) to monitor the lengths of two rifts on the Amery Ice Shelf, from 1996 to 2004. We find that the rifts have each been propagating at a steady annual rate for the past 5 years. Superimposed on this steady rate is a seasonal signal, where propagation rates are significantly higher in the summer period (i.e., September-April) than in the winter period (i.e., April-September). Possible causes of this summer-winter effect are changing properties of the ice mélange, which fills the rifts, and seasonal changes in ocean circulation beneath the ice shelf. Copyright 2005 by the American Geophysical Union.

Item Details

Item Type:Refereed Article
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:Adaptation to climate change
Objective Field:Social impacts of climate change and variability
UTAS Author:Young, NW (Mr Neal Young)
UTAS Author:Coleman, R (Professor Richard Coleman)
ID Code:32999
Year Published:2005
Web of Science® Times Cited:149
Deposited By:Geography and Environmental Studies
Deposited On:2005-08-01
Last Modified:2011-10-06

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