Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake
Field observations and RADARSAT imagery of the Ward Hunt Ice Shelf (lat. 83°N, long. 74°W), Nunavut, Canada, show that it broke in two over the period 2000 to 2002, with additional fissuring and further ice island calving. The fracturing caused the drainage of an ice-dammed epishelf lake (Disraeli F...
Published in: | Geophysical Research Letters |
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Online Access: | https://ir.library.carleton.ca/pub/25887 https://doi.org/10.1029/2003GL017931 |
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ftcarletonunivir:oai:carleton.ca:25887 2023-05-15T13:42:01+02:00 Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake Mueller, D. (Derek) Vincent, W.F. (Warwick F.) Jeffries, M.O. (Martin O.) 2003-10-15 https://ir.library.carleton.ca/pub/25887 https://doi.org/10.1029/2003GL017931 en eng https://ir.library.carleton.ca/pub/25887 doi:10.1029/2003GL017931 Geophysical Research Letters vol. 30 no. 20 info:eu-repo/semantics/article 2003 ftcarletonunivir https://doi.org/10.1029/2003GL017931 2022-02-06T21:51:21Z Field observations and RADARSAT imagery of the Ward Hunt Ice Shelf (lat. 83°N, long. 74°W), Nunavut, Canada, show that it broke in two over the period 2000 to 2002, with additional fissuring and further ice island calving. The fracturing caused the drainage of an ice-dammed epishelf lake (Disraeli Fiord), a rare ecosystem type. Reductions in the freshwater volume of Disraeli Fiord occurred from 1967 to the present and accompanied a significant rise in mean annual air temperature over the same period in this far northern region. The recent collapse of ice shelves in West Antarctica has been interpreted as evidence of accelerated climate change in that region. Similarly, the inferred thinning and observed fragmentation of the ice shelf, plus the drainage of the epishelf lake, are additional evidence for climate change in the High Arctic. Article in Journal/Newspaper Antarc* Antarctica Arctic Climate change Ice Shelf Ice Shelves Nunavut Ward Hunt Ice Shelf West Antarctica Carleton University's Institutional Repository Arctic Canada Disraeli Fiord ENVELOPE(-73.344,-73.344,82.819,82.819) Nunavut Ward Hunt Ice Shelf ENVELOPE(-73.499,-73.499,83.122,83.122) West Antarctica Geophysical Research Letters 30 20 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
description |
Field observations and RADARSAT imagery of the Ward Hunt Ice Shelf (lat. 83°N, long. 74°W), Nunavut, Canada, show that it broke in two over the period 2000 to 2002, with additional fissuring and further ice island calving. The fracturing caused the drainage of an ice-dammed epishelf lake (Disraeli Fiord), a rare ecosystem type. Reductions in the freshwater volume of Disraeli Fiord occurred from 1967 to the present and accompanied a significant rise in mean annual air temperature over the same period in this far northern region. The recent collapse of ice shelves in West Antarctica has been interpreted as evidence of accelerated climate change in that region. Similarly, the inferred thinning and observed fragmentation of the ice shelf, plus the drainage of the epishelf lake, are additional evidence for climate change in the High Arctic. |
format |
Article in Journal/Newspaper |
author |
Mueller, D. (Derek) Vincent, W.F. (Warwick F.) Jeffries, M.O. (Martin O.) |
spellingShingle |
Mueller, D. (Derek) Vincent, W.F. (Warwick F.) Jeffries, M.O. (Martin O.) Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
author_facet |
Mueller, D. (Derek) Vincent, W.F. (Warwick F.) Jeffries, M.O. (Martin O.) |
author_sort |
Mueller, D. (Derek) |
title |
Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
title_short |
Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
title_full |
Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
title_fullStr |
Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
title_full_unstemmed |
Break-up of the largest Arctic ice shelf and associated loss of an epishelf lake |
title_sort |
break-up of the largest arctic ice shelf and associated loss of an epishelf lake |
publishDate |
2003 |
url |
https://ir.library.carleton.ca/pub/25887 https://doi.org/10.1029/2003GL017931 |
long_lat |
ENVELOPE(-73.344,-73.344,82.819,82.819) ENVELOPE(-73.499,-73.499,83.122,83.122) |
geographic |
Arctic Canada Disraeli Fiord Nunavut Ward Hunt Ice Shelf West Antarctica |
geographic_facet |
Arctic Canada Disraeli Fiord Nunavut Ward Hunt Ice Shelf West Antarctica |
genre |
Antarc* Antarctica Arctic Climate change Ice Shelf Ice Shelves Nunavut Ward Hunt Ice Shelf West Antarctica |
genre_facet |
Antarc* Antarctica Arctic Climate change Ice Shelf Ice Shelves Nunavut Ward Hunt Ice Shelf West Antarctica |
op_source |
Geophysical Research Letters vol. 30 no. 20 |
op_relation |
https://ir.library.carleton.ca/pub/25887 doi:10.1029/2003GL017931 |
op_doi |
https://doi.org/10.1029/2003GL017931 |
container_title |
Geophysical Research Letters |
container_volume |
30 |
container_issue |
20 |
_version_ |
1766161886370332672 |