RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020
RADARSAT-2 imagery collected each winter from 2015/2016 to 2019/2020 is used to quantify and characterize the variability in the motion of, and the discharge from, the major marine-terminating ice masses of the Queen Elizabeth Islands (QEI: Devon, Ellesmere and Axel Heiberg Islands) in the Canadian...
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Taylor & Francis Group
2020
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Online Access: | https://doi.org/10.1080/07038992.2020.1859359 https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4 |
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ftdoajarticles:oai:doaj.org/article:026f3eeb37a3493db98368dd7b84f6e4 2023-11-12T04:12:23+01:00 RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 Wesley Van Wychen David Burgess Will Kochtitzky Natalija Nikolic Luke Copland Laurence Gray 2020-11-01T00:00:00Z https://doi.org/10.1080/07038992.2020.1859359 https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4 EN FR eng fre Taylor & Francis Group http://dx.doi.org/10.1080/07038992.2020.1859359 https://doaj.org/toc/1712-7971 1712-7971 doi:10.1080/07038992.2020.1859359 https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4 Canadian Journal of Remote Sensing, Vol 46, Iss 6, Pp 695-714 (2020) Environmental sciences GE1-350 Technology T article 2020 ftdoajarticles https://doi.org/10.1080/07038992.2020.1859359 2023-10-15T00:36:30Z RADARSAT-2 imagery collected each winter from 2015/2016 to 2019/2020 is used to quantify and characterize the variability in the motion of, and the discharge from, the major marine-terminating ice masses of the Queen Elizabeth Islands (QEI: Devon, Ellesmere and Axel Heiberg Islands) in the Canadian High Arctic. The majority of the glaciers did not experience significant variations in flow speeds over the observation period, and for most that did the variations are attributed to pulse and surge processes. However, there are exceptions where the velocity record indicates continued acceleration of the glaciers by processes that appear distinct from surging or pulsing, such as dynamic thinning. These include Trinity and Wykeham glaciers (Prince of Wales Icefield) and Belcher Glacier (Devon Ice Cap). The combination of surface velocities with ice thicknesses indicates that average ice discharge to the ocean for the QEI over the observation period was 2.78 ± 0.52 Gt a−1 (ranging between ∼2.37 ± 0.48 Gt a−1 and ∼3.20 ± 0.55 Gt a−1), ∼50% of which was channeled through the Trinity-Wykeham glacier basin alone. The results presented here, combined with those of previous studies, provide a comprehensive record of ice motion and discharge from the QEI between 2008 and 2020. Article in Journal/Newspaper Arctic Ice cap Queen Elizabeth Islands Directory of Open Access Journals: DOAJ Articles Arctic Belcher ENVELOPE(-94.172,-94.172,57.936,57.936) Belcher Glacier ENVELOPE(-81.354,-81.354,75.682,75.682) Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Prince of Wales Icefield ENVELOPE(-78.998,-78.998,78.252,78.252) Wykeham Glacier ENVELOPE(-78.702,-78.702,77.907,77.907) Canadian Journal of Remote Sensing 46 6 695 714 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
Environmental sciences GE1-350 Technology T |
spellingShingle |
Environmental sciences GE1-350 Technology T Wesley Van Wychen David Burgess Will Kochtitzky Natalija Nikolic Luke Copland Laurence Gray RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
topic_facet |
Environmental sciences GE1-350 Technology T |
description |
RADARSAT-2 imagery collected each winter from 2015/2016 to 2019/2020 is used to quantify and characterize the variability in the motion of, and the discharge from, the major marine-terminating ice masses of the Queen Elizabeth Islands (QEI: Devon, Ellesmere and Axel Heiberg Islands) in the Canadian High Arctic. The majority of the glaciers did not experience significant variations in flow speeds over the observation period, and for most that did the variations are attributed to pulse and surge processes. However, there are exceptions where the velocity record indicates continued acceleration of the glaciers by processes that appear distinct from surging or pulsing, such as dynamic thinning. These include Trinity and Wykeham glaciers (Prince of Wales Icefield) and Belcher Glacier (Devon Ice Cap). The combination of surface velocities with ice thicknesses indicates that average ice discharge to the ocean for the QEI over the observation period was 2.78 ± 0.52 Gt a−1 (ranging between ∼2.37 ± 0.48 Gt a−1 and ∼3.20 ± 0.55 Gt a−1), ∼50% of which was channeled through the Trinity-Wykeham glacier basin alone. The results presented here, combined with those of previous studies, provide a comprehensive record of ice motion and discharge from the QEI between 2008 and 2020. |
format |
Article in Journal/Newspaper |
author |
Wesley Van Wychen David Burgess Will Kochtitzky Natalija Nikolic Luke Copland Laurence Gray |
author_facet |
Wesley Van Wychen David Burgess Will Kochtitzky Natalija Nikolic Luke Copland Laurence Gray |
author_sort |
Wesley Van Wychen |
title |
RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
title_short |
RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
title_full |
RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
title_fullStr |
RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
title_full_unstemmed |
RADARSAT-2 Derived Glacier Velocities and Dynamic Discharge Estimates for the Canadian High Arctic: 2015–2020 |
title_sort |
radarsat-2 derived glacier velocities and dynamic discharge estimates for the canadian high arctic: 2015–2020 |
publisher |
Taylor & Francis Group |
publishDate |
2020 |
url |
https://doi.org/10.1080/07038992.2020.1859359 https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4 |
long_lat |
ENVELOPE(-94.172,-94.172,57.936,57.936) ENVELOPE(-81.354,-81.354,75.682,75.682) ENVELOPE(-82.499,-82.499,75.335,75.335) ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-78.998,-78.998,78.252,78.252) ENVELOPE(-78.702,-78.702,77.907,77.907) |
geographic |
Arctic Belcher Belcher Glacier Devon Ice Cap Heiberg Prince of Wales Icefield Wykeham Glacier |
geographic_facet |
Arctic Belcher Belcher Glacier Devon Ice Cap Heiberg Prince of Wales Icefield Wykeham Glacier |
genre |
Arctic Ice cap Queen Elizabeth Islands |
genre_facet |
Arctic Ice cap Queen Elizabeth Islands |
op_source |
Canadian Journal of Remote Sensing, Vol 46, Iss 6, Pp 695-714 (2020) |
op_relation |
http://dx.doi.org/10.1080/07038992.2020.1859359 https://doaj.org/toc/1712-7971 1712-7971 doi:10.1080/07038992.2020.1859359 https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4 |
op_doi |
https://doi.org/10.1080/07038992.2020.1859359 |
container_title |
Canadian Journal of Remote Sensing |
container_volume |
46 |
container_issue |
6 |
container_start_page |
695 |
op_container_end_page |
714 |
_version_ |
1782330950899728384 |