Greenland Ice Sheet response to external forcing
This is the published version, also available here: http://dx.doi.org/10.1029/2001JD900032. Kinematic wave modeling is used to evaluate possible responses of the Greenland ice sheet to changes in its surface mass balance. In the approach followed here the reference state is defined based on measured...
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Online Access: | http://hdl.handle.net/1808/17327 https://doi.org/10.1029/2001JD900032 |
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/17327 2023-05-15T16:21:10+02:00 Greenland Ice Sheet response to external forcing van der Veen, Cornelis J. 2015-04-06T20:33:08Z http://hdl.handle.net/1808/17327 https://doi.org/10.1029/2001JD900032 unknown American Geophysical Union Van Der Veen, C. J. "Greenland Ice Sheet response to external forcing." Journal of Geophysical Research. (2001) 106, D24. pp 34,047 - 34,058. http://dx.doi.org/10.1029/2001JD900032. http://hdl.handle.net/1808/17327 doi:10.1029/2001JD900032 openAccess Article 2015 ftunivkansas https://doi.org/10.1029/2001JD900032 2022-08-26T13:16:46Z This is the published version, also available here: http://dx.doi.org/10.1029/2001JD900032. Kinematic wave modeling is used to evaluate possible responses of the Greenland ice sheet to changes in its surface mass balance. In the approach followed here the reference state is defined based on measured velocity and discharge flux along the central flow line of Petermann Glacier in the northwest, and perturbations on this state are considered. The results indicate that significant rates of thickness change can occur immediately after the prescribed change in surface mass balance but adjustments in flow rapidly diminish these rates to a few centimeters per year at most. Full adjustment of the ice sheet requires times of the order of 1000 years. The instability mechanism known as the Jakobshavn Effect is discussed and, based on observational evidence as well as results from prior modeling studies, it is concluded that this is an unlikely mechanism for destabilizing major drainage basins of the Greenland ice sheet. Article in Journal/Newspaper glacier Greenland Ice Sheet Jakobshavn Petermann glacier The University of Kansas: KU ScholarWorks Greenland Journal of Geophysical Research: Atmospheres 106 D24 34047 34058 |
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Open Polar |
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The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
description |
This is the published version, also available here: http://dx.doi.org/10.1029/2001JD900032. Kinematic wave modeling is used to evaluate possible responses of the Greenland ice sheet to changes in its surface mass balance. In the approach followed here the reference state is defined based on measured velocity and discharge flux along the central flow line of Petermann Glacier in the northwest, and perturbations on this state are considered. The results indicate that significant rates of thickness change can occur immediately after the prescribed change in surface mass balance but adjustments in flow rapidly diminish these rates to a few centimeters per year at most. Full adjustment of the ice sheet requires times of the order of 1000 years. The instability mechanism known as the Jakobshavn Effect is discussed and, based on observational evidence as well as results from prior modeling studies, it is concluded that this is an unlikely mechanism for destabilizing major drainage basins of the Greenland ice sheet. |
format |
Article in Journal/Newspaper |
author |
van der Veen, Cornelis J. |
spellingShingle |
van der Veen, Cornelis J. Greenland Ice Sheet response to external forcing |
author_facet |
van der Veen, Cornelis J. |
author_sort |
van der Veen, Cornelis J. |
title |
Greenland Ice Sheet response to external forcing |
title_short |
Greenland Ice Sheet response to external forcing |
title_full |
Greenland Ice Sheet response to external forcing |
title_fullStr |
Greenland Ice Sheet response to external forcing |
title_full_unstemmed |
Greenland Ice Sheet response to external forcing |
title_sort |
greenland ice sheet response to external forcing |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/17327 https://doi.org/10.1029/2001JD900032 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Jakobshavn Petermann glacier |
genre_facet |
glacier Greenland Ice Sheet Jakobshavn Petermann glacier |
op_relation |
Van Der Veen, C. J. "Greenland Ice Sheet response to external forcing." Journal of Geophysical Research. (2001) 106, D24. pp 34,047 - 34,058. http://dx.doi.org/10.1029/2001JD900032. http://hdl.handle.net/1808/17327 doi:10.1029/2001JD900032 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1029/2001JD900032 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
106 |
container_issue |
D24 |
container_start_page |
34047 |
op_container_end_page |
34058 |
_version_ |
1766009184628768768 |