Mass balance of Devon Ice Cap, Canadian Arctic
Interferometric synthetic aperture radar data show that Devon Ice Cap (DIC), northern Canada, is drained through a network of 11 glacier systems. More than half of all ice discharge is through broad flows that converge to the southeast of the ice cap, and these are grounded well below sea level at t...
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2007
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ftnerc:oai:nora.nerc.ac.uk:11952 2023-05-15T13:29:19+02:00 Mass balance of Devon Ice Cap, Canadian Arctic Sheperd, Andrew Du, Zhijun Benham, Toby J. Dowdeswell, Julian A. Morris, Elizabeth M. 2007 http://nora.nerc.ac.uk/id/eprint/11952/ unknown International Glaciological Society Sheperd, Andrew; Du, Zhijun; Benham, Toby J.; Dowdeswell, Julian A.; Morris, Elizabeth M. 2007 Mass balance of Devon Ice Cap, Canadian Arctic. Annals of Glaciology, 46. 249-254. Glaciology Hydrology Publication - Article PeerReviewed 2007 ftnerc 2023-02-04T19:27:43Z Interferometric synthetic aperture radar data show that Devon Ice Cap (DIC), northern Canada, is drained through a network of 11 glacier systems. More than half of all ice discharge is through broad flows that converge to the southeast of the ice cap, and these are grounded well below sea level at their termini. A calculation of the ice-cap mass budget reveals that the northwestern sector of DIC is gaining mass and that all other sectors are losing mass. We estimate that a 12 489 km(2) section of the main ice cap receives 3.46 +/- 0.65 Gt of snowfall each year, and loses 3.11 +/- 0.21 Gt of water through runoff, and 1.43 +/- 0.03 Gt of ice through glacier discharge. Altogether, the net mass balance of DIC is -1.08 +/- 0.67 Gt a(-1). This loss corresponds to a 0.003 mm a(-1) contribution to global sea levels, and is about half the magnitude of earlier estimates. Article in Journal/Newspaper Annals of Glaciology Arctic Arctic glacier* Ice cap Natural Environment Research Council: NERC Open Research Archive Arctic Canada Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology Hydrology |
spellingShingle |
Glaciology Hydrology Sheperd, Andrew Du, Zhijun Benham, Toby J. Dowdeswell, Julian A. Morris, Elizabeth M. Mass balance of Devon Ice Cap, Canadian Arctic |
topic_facet |
Glaciology Hydrology |
description |
Interferometric synthetic aperture radar data show that Devon Ice Cap (DIC), northern Canada, is drained through a network of 11 glacier systems. More than half of all ice discharge is through broad flows that converge to the southeast of the ice cap, and these are grounded well below sea level at their termini. A calculation of the ice-cap mass budget reveals that the northwestern sector of DIC is gaining mass and that all other sectors are losing mass. We estimate that a 12 489 km(2) section of the main ice cap receives 3.46 +/- 0.65 Gt of snowfall each year, and loses 3.11 +/- 0.21 Gt of water through runoff, and 1.43 +/- 0.03 Gt of ice through glacier discharge. Altogether, the net mass balance of DIC is -1.08 +/- 0.67 Gt a(-1). This loss corresponds to a 0.003 mm a(-1) contribution to global sea levels, and is about half the magnitude of earlier estimates. |
format |
Article in Journal/Newspaper |
author |
Sheperd, Andrew Du, Zhijun Benham, Toby J. Dowdeswell, Julian A. Morris, Elizabeth M. |
author_facet |
Sheperd, Andrew Du, Zhijun Benham, Toby J. Dowdeswell, Julian A. Morris, Elizabeth M. |
author_sort |
Sheperd, Andrew |
title |
Mass balance of Devon Ice Cap, Canadian Arctic |
title_short |
Mass balance of Devon Ice Cap, Canadian Arctic |
title_full |
Mass balance of Devon Ice Cap, Canadian Arctic |
title_fullStr |
Mass balance of Devon Ice Cap, Canadian Arctic |
title_full_unstemmed |
Mass balance of Devon Ice Cap, Canadian Arctic |
title_sort |
mass balance of devon ice cap, canadian arctic |
publisher |
International Glaciological Society |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/11952/ |
long_lat |
ENVELOPE(-82.499,-82.499,75.335,75.335) |
geographic |
Arctic Canada Devon Ice Cap |
geographic_facet |
Arctic Canada Devon Ice Cap |
genre |
Annals of Glaciology Arctic Arctic glacier* Ice cap |
genre_facet |
Annals of Glaciology Arctic Arctic glacier* Ice cap |
op_relation |
Sheperd, Andrew; Du, Zhijun; Benham, Toby J.; Dowdeswell, Julian A.; Morris, Elizabeth M. 2007 Mass balance of Devon Ice Cap, Canadian Arctic. Annals of Glaciology, 46. 249-254. |
_version_ |
1765999913687056384 |