Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century
The increasingly negative mass balance of the Greenland ice sheet (GrIS) over the last ~25 years has been associated with enhanced surface melt and increased ice loss from marine-terminating outlet glaciers. Accelerated retreat during 2000–2010 was concentrated in the southeast and northwest sectors...
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Online Access: | https://eprints.lancs.ac.uk/id/eprint/124462/ https://doi.org/10.1017/jog.2018.44 |
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ftulancaster:oai:eprints.lancs.ac.uk:124462 2023-08-27T04:09:35+02:00 Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century Bunce, Charlie Carr, J. Rachel Nienow, Peter Ross, Neil Killick, Rebecca Claire 2018-08 https://eprints.lancs.ac.uk/id/eprint/124462/ https://doi.org/10.1017/jog.2018.44 unknown Bunce, Charlie and Carr, J. Rachel and Nienow, Peter and Ross, Neil and Killick, Rebecca Claire (2018) Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century. Journal of Glaciology, 64 (246). pp. 523-535. ISSN 0022-1430 Journal Article PeerReviewed 2018 ftulancaster https://doi.org/10.1017/jog.2018.44 2023-08-03T22:33:01Z The increasingly negative mass balance of the Greenland ice sheet (GrIS) over the last ~25 years has been associated with enhanced surface melt and increased ice loss from marine-terminating outlet glaciers. Accelerated retreat during 2000–2010 was concentrated in the southeast and northwest sectors of the ice sheet; however, there was considerable spatial and temporal variability in the timing and magnitude of retreat both within and between these regions. This behaviour has yet to be quantified and compared for all glaciers in both regions. Furthermore, it is unclear whether retreat has continued after 2010 in the northwest, and whether the documented slowdown in the southeast post-2005 has been sustained. Here, we compare spatial and temporal patterns of frontal change in the northwest and southeast GrIS, for the period 2000–2015. Our results show near-ubiquitous retreat of outlet glaciers across both regions for the study period; however, the timing and magnitude of inter-annual frontal position change is largely asynchronous. We also find that since 2010, there is continued terminus retreat in the northwest, which contrasts with considerable inter-annual variability in the southeast. Analysis of the role of glacier-specific factors demonstrates that fjord and bed geometry are important controls on the timing and magnitude of glacier retreat. Article in Journal/Newspaper glacier Greenland Ice Sheet Journal of Glaciology Lancaster University: Lancaster Eprints Greenland Journal of Glaciology 64 246 523 535 |
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Open Polar |
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Lancaster University: Lancaster Eprints |
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ftulancaster |
language |
unknown |
description |
The increasingly negative mass balance of the Greenland ice sheet (GrIS) over the last ~25 years has been associated with enhanced surface melt and increased ice loss from marine-terminating outlet glaciers. Accelerated retreat during 2000–2010 was concentrated in the southeast and northwest sectors of the ice sheet; however, there was considerable spatial and temporal variability in the timing and magnitude of retreat both within and between these regions. This behaviour has yet to be quantified and compared for all glaciers in both regions. Furthermore, it is unclear whether retreat has continued after 2010 in the northwest, and whether the documented slowdown in the southeast post-2005 has been sustained. Here, we compare spatial and temporal patterns of frontal change in the northwest and southeast GrIS, for the period 2000–2015. Our results show near-ubiquitous retreat of outlet glaciers across both regions for the study period; however, the timing and magnitude of inter-annual frontal position change is largely asynchronous. We also find that since 2010, there is continued terminus retreat in the northwest, which contrasts with considerable inter-annual variability in the southeast. Analysis of the role of glacier-specific factors demonstrates that fjord and bed geometry are important controls on the timing and magnitude of glacier retreat. |
format |
Article in Journal/Newspaper |
author |
Bunce, Charlie Carr, J. Rachel Nienow, Peter Ross, Neil Killick, Rebecca Claire |
spellingShingle |
Bunce, Charlie Carr, J. Rachel Nienow, Peter Ross, Neil Killick, Rebecca Claire Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
author_facet |
Bunce, Charlie Carr, J. Rachel Nienow, Peter Ross, Neil Killick, Rebecca Claire |
author_sort |
Bunce, Charlie |
title |
Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
title_short |
Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
title_full |
Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
title_fullStr |
Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
title_full_unstemmed |
Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century |
title_sort |
ice front change of marine-terminating outlet glaciers in northwest and southeast greenland during the 21st century |
publishDate |
2018 |
url |
https://eprints.lancs.ac.uk/id/eprint/124462/ https://doi.org/10.1017/jog.2018.44 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Journal of Glaciology |
genre_facet |
glacier Greenland Ice Sheet Journal of Glaciology |
op_relation |
Bunce, Charlie and Carr, J. Rachel and Nienow, Peter and Ross, Neil and Killick, Rebecca Claire (2018) Ice front change of marine-terminating outlet glaciers in northwest and southeast Greenland during the 21st Century. Journal of Glaciology, 64 (246). pp. 523-535. ISSN 0022-1430 |
op_doi |
https://doi.org/10.1017/jog.2018.44 |
container_title |
Journal of Glaciology |
container_volume |
64 |
container_issue |
246 |
container_start_page |
523 |
op_container_end_page |
535 |
_version_ |
1775351093206712320 |