Mass balance of Devon Ice Cap, Canadian Arctic
ABSTRACT. 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...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.430.2500 2023-05-15T15:03:01+02:00 Mass balance of Devon Ice Cap, Canadian Arctic Andrew Shepherd Zhijun Du Toby J. Benham Julian A. Dowdeswell Elizabeth M. Morris The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.2500 http://www.igsoc.org/annals/46/a46a288.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.2500 http://www.igsoc.org/annals/46/a46a288.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.igsoc.org/annals/46/a46a288.pdf text ftciteseerx 2016-01-08T04:37:19Z ABSTRACT. 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. 1. Text Arctic glacier* Ice cap Unknown Arctic Canada Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
ABSTRACT. 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. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Andrew Shepherd Zhijun Du Toby J. Benham Julian A. Dowdeswell Elizabeth M. Morris |
spellingShingle |
Andrew Shepherd Zhijun Du Toby J. Benham Julian A. Dowdeswell Elizabeth M. Morris Mass balance of Devon Ice Cap, Canadian Arctic |
author_facet |
Andrew Shepherd Zhijun Du Toby J. Benham Julian A. Dowdeswell Elizabeth M. Morris |
author_sort |
Andrew Shepherd |
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 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.2500 http://www.igsoc.org/annals/46/a46a288.pdf |
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 |
Arctic glacier* Ice cap |
genre_facet |
Arctic glacier* Ice cap |
op_source |
http://www.igsoc.org/annals/46/a46a288.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.2500 http://www.igsoc.org/annals/46/a46a288.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766334927515680768 |