A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery
This is the publisher's version, also available electronically from "http://www.ingentaconnect.com". New ice-velocity measurements are obtained for the main trunk of Byrd Glacier, East Antarctica, using recently acquired Advanced Spaceborne Thermal Emission and Reflection Radiometer (...
Published in: | Annals of Glaciology |
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International Glaciological Society
2015
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Online Access: | http://hdl.handle.net/1808/17209 https://doi.org/10.3189/172756405781813393 |
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/17209 2023-05-15T13:29:37+02:00 A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery Stearns, Leigh A. Hamilton, Gordon S. 2015-03-24T20:14:18Z http://hdl.handle.net/1808/17209 https://doi.org/10.3189/172756405781813393 unknown International Glaciological Society Stearns, L., & Hamilton, G. (2005). A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery. Annals of Glaciology, 41(1), 71-76. http://dx.doi.org/10.3189/172756405781813393 0260-3055 http://hdl.handle.net/1808/17209 doi:10.3189/172756405781813393 openAccess Article 2015 ftunivkansas https://doi.org/10.3189/172756405781813393 2022-08-26T13:16:37Z This is the publisher's version, also available electronically from "http://www.ingentaconnect.com". New ice-velocity measurements are obtained for the main trunk of Byrd Glacier, East Antarctica, using recently acquired Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery. The velocities are derived from the application of a cross-correlation technique to sequential images acquired in 2000 and 2001. Images were co-registered and ortho-rectified with the aid of a digital elevation model (DEM) generated from ASTER stereo imagery. This paper outlines the process of DEM generation, image co-registration and correction, and the application of the cross-correlation technique to obtain ice velocities. Comparison of the new velocity map with earlier measurements of velocity from 1978 indicates that the glacier has undergone a substantial deceleration between observations. Portions of the glacier flowing at speeds of ∼850 m a−1 in 1978/79 were flowing at ∼650 m a−1 in 2000/01. The cause of this change in ice dynamics is not known, but the observation shows that East Antarctic outlet glaciers can undergo substantial changes on relatively short timescales. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Byrd Glacier East Antarctica The University of Kansas: KU ScholarWorks Antarctic Byrd Byrd Glacier ENVELOPE(160.333,160.333,-80.250,-80.250) East Antarctica Annals of Glaciology 41 71 76 |
institution |
Open Polar |
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The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
description |
This is the publisher's version, also available electronically from "http://www.ingentaconnect.com". New ice-velocity measurements are obtained for the main trunk of Byrd Glacier, East Antarctica, using recently acquired Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery. The velocities are derived from the application of a cross-correlation technique to sequential images acquired in 2000 and 2001. Images were co-registered and ortho-rectified with the aid of a digital elevation model (DEM) generated from ASTER stereo imagery. This paper outlines the process of DEM generation, image co-registration and correction, and the application of the cross-correlation technique to obtain ice velocities. Comparison of the new velocity map with earlier measurements of velocity from 1978 indicates that the glacier has undergone a substantial deceleration between observations. Portions of the glacier flowing at speeds of ∼850 m a−1 in 1978/79 were flowing at ∼650 m a−1 in 2000/01. The cause of this change in ice dynamics is not known, but the observation shows that East Antarctic outlet glaciers can undergo substantial changes on relatively short timescales. |
format |
Article in Journal/Newspaper |
author |
Stearns, Leigh A. Hamilton, Gordon S. |
spellingShingle |
Stearns, Leigh A. Hamilton, Gordon S. A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
author_facet |
Stearns, Leigh A. Hamilton, Gordon S. |
author_sort |
Stearns, Leigh A. |
title |
A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
title_short |
A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
title_full |
A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
title_fullStr |
A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
title_full_unstemmed |
A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery |
title_sort |
new velocity map for byrd glacier, east antarctica, derived from high-resolution satellite imagery |
publisher |
International Glaciological Society |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/17209 https://doi.org/10.3189/172756405781813393 |
long_lat |
ENVELOPE(160.333,160.333,-80.250,-80.250) |
geographic |
Antarctic Byrd Byrd Glacier East Antarctica |
geographic_facet |
Antarctic Byrd Byrd Glacier East Antarctica |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Byrd Glacier East Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Byrd Glacier East Antarctica |
op_relation |
Stearns, L., & Hamilton, G. (2005). A new velocity map for Byrd Glacier, East Antarctica, derived from high-resolution satellite imagery. Annals of Glaciology, 41(1), 71-76. http://dx.doi.org/10.3189/172756405781813393 0260-3055 http://hdl.handle.net/1808/17209 doi:10.3189/172756405781813393 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3189/172756405781813393 |
container_title |
Annals of Glaciology |
container_volume |
41 |
container_start_page |
71 |
op_container_end_page |
76 |
_version_ |
1766001483211341824 |