Sand dune movement in the Victoria Valley, Antarctica

Bourke, Mary C., Ewing, Ryan C., Finnegan, David and McGowan, Hamish A. (2009) Sand dune movement in the Victoria Valley, Antarctica. Geomorphology, 109 3-4: 148-160. doi:10.1016/j.geomorph.2009.02.028

Author Bourke, Mary C.
Ewing, Ryan C.
Finnegan, David
McGowan, Hamish A.
Title Sand dune movement in the Victoria Valley, Antarctica
Journal name Geomorphology   Check publisher's open access policy
ISSN 0169-555X
Publication date 2009-08-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.geomorph.2009.02.028
Open Access Status
Volume 109
Issue 3-4
Start page 148
End page 160
Total pages 13
Editor A. Plater
R. A. Marston
T. Oguchi
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Subject C1
0406 Physical Geography and Environmental Geoscience
960202 Atmospheric Processes and Dynamics
Abstract We use vertical aerial photographs and LiDAR topographic survey data to estimate dune migration rates in the Victoria Valley dunefield, Antarctica, between 1961 and 2001. Results confirm that the dunes migrated an average of 1.5 m/year. These values are consistent with other estimates of dune migration from cold climate deserts and are significantly lower than estimates from warm deserts. Dune migration rates are retarded by the presence of entrained ice, soil moisture and a reversing wind regime. Dune absorption, merging and limb extension are apparent from the time-series images and account for significant changes in dune form and the field-scale dune pattern. Dune-field pattern analysis shows an overall increase in dune-field organization with an increase in mean dune spacing and a reduction in total crest length and defect density. These data suggest that dunes in other cold desert environments on Earth, Mars or Titan, that may also have inter-bedded frozen laminae, still have the potential to migrate and organize, albeit at lower rates than dunes in warm deserts.
Keyword Antarctica
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
2010 Higher Education Research Data Collection
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Citation counts: TR Web of Science Citation Count  Cited 33 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 03 Sep 2009, 17:51:17 EST by Mr Andrew Martlew on behalf of School of Geography, Planning & Env Management