Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet
This is the publisher's version, also available electronically from "http://www.ingentaconnect.com". Local rates of change in ice-sheet thickness were calculated at 15 sites in West Antarctica using the submergence velocity technique. This method entails a comparison of the vertical v...
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Online Access: | http://hdl.handle.net/1808/17212 https://doi.org/10.3189/172756405781813195 |
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/17212 2023-05-15T13:23:53+02:00 Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet Hamilton, Gordon S. Spikes, V. Blue Stearns, Leigh A. 2015-03-24T20:59:54Z http://hdl.handle.net/1808/17212 https://doi.org/10.3189/172756405781813195 unknown International Glaciological Society Hamilton, G., Spikes, V., & Stearns, L. (2005). Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet. Annals of Glaciology, 41(1), 105-110. http://dx.doi.org/10.3189/172756405781813195 0260-3055 http://hdl.handle.net/1808/17212 doi:10.3189/172756405781813195 openAccess Article 2015 ftunivkansas https://doi.org/10.3189/172756405781813195 2022-08-26T13:16:37Z This is the publisher's version, also available electronically from "http://www.ingentaconnect.com". Local rates of change in ice-sheet thickness were calculated at 15 sites in West Antarctica using the submergence velocity technique. This method entails a comparison of the vertical velocity of the ice sheet, measured using repeat global positioning system surveys of markers, and local long-term rates of snow accumulation obtained using firn-core stratigraphy. Any significant difference between these two quantities represents a thickness change with time. Measurements were conducted at sites located ∼100–200 km apart along US ITASE traverse routes, and at several isolated locations. All but one of the sites are distributed in the Siple Coast and the Amundsen Sea basin along contours of constant elevation, along flowlines, across ice divides and close to regions of enhanced flow. Calculated rates of thickness change are different from site to site. Most of the large rates of change in ice thickness (∼10 cm a−1 or larger) are observed in or close to regions of rapid flow, and are probably related to ice-dynamics effects. Near-steady-state conditions are calculated mostly at sites in the slow-moving ice-sheet interior and near the main West Antarctic ice divide. These results are consistent with regional estimates of ice-sheet change derived from remote-sensing measurements at similar locations in West Antarctica. Article in Journal/Newspaper Amundsen Sea Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica The University of Kansas: KU ScholarWorks Amundsen Sea Antarctic Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) Siple Coast ENVELOPE(-155.000,-155.000,-82.000,-82.000) West Antarctic Ice Sheet West Antarctica Annals of Glaciology 41 105 110 |
institution |
Open Polar |
collection |
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". Local rates of change in ice-sheet thickness were calculated at 15 sites in West Antarctica using the submergence velocity technique. This method entails a comparison of the vertical velocity of the ice sheet, measured using repeat global positioning system surveys of markers, and local long-term rates of snow accumulation obtained using firn-core stratigraphy. Any significant difference between these two quantities represents a thickness change with time. Measurements were conducted at sites located ∼100–200 km apart along US ITASE traverse routes, and at several isolated locations. All but one of the sites are distributed in the Siple Coast and the Amundsen Sea basin along contours of constant elevation, along flowlines, across ice divides and close to regions of enhanced flow. Calculated rates of thickness change are different from site to site. Most of the large rates of change in ice thickness (∼10 cm a−1 or larger) are observed in or close to regions of rapid flow, and are probably related to ice-dynamics effects. Near-steady-state conditions are calculated mostly at sites in the slow-moving ice-sheet interior and near the main West Antarctic ice divide. These results are consistent with regional estimates of ice-sheet change derived from remote-sensing measurements at similar locations in West Antarctica. |
format |
Article in Journal/Newspaper |
author |
Hamilton, Gordon S. Spikes, V. Blue Stearns, Leigh A. |
spellingShingle |
Hamilton, Gordon S. Spikes, V. Blue Stearns, Leigh A. Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
author_facet |
Hamilton, Gordon S. Spikes, V. Blue Stearns, Leigh A. |
author_sort |
Hamilton, Gordon S. |
title |
Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
title_short |
Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
title_full |
Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
title_fullStr |
Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
title_full_unstemmed |
Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet |
title_sort |
spatial patterns in mass balance of the siple coast and amundsen sea sectors of the west antarctic ice sheet |
publisher |
International Glaciological Society |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/17212 https://doi.org/10.3189/172756405781813195 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-155.000,-155.000,-82.000,-82.000) |
geographic |
Amundsen Sea Antarctic Siple Siple Coast West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Amundsen Sea Antarctic Siple Siple Coast West Antarctic Ice Sheet West Antarctica |
genre |
Amundsen Sea Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Amundsen Sea Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
Hamilton, G., Spikes, V., & Stearns, L. (2005). Spatial patterns in mass balance of the Siple Coast and Amundsen Sea sectors of the West Antarctic Ice Sheet. Annals of Glaciology, 41(1), 105-110. http://dx.doi.org/10.3189/172756405781813195 0260-3055 http://hdl.handle.net/1808/17212 doi:10.3189/172756405781813195 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3189/172756405781813195 |
container_title |
Annals of Glaciology |
container_volume |
41 |
container_start_page |
105 |
op_container_end_page |
110 |
_version_ |
1766376050813566976 |