Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic
Here we use a variety of remote sensing data sets to characterize the evolving extent, surface features, dynamics, and surface elevations of Split Lake Glacier, a small outlet of the Prince of Wales Icefield, Nunavut. The glacier started advancing between 1959 and 1975, with a continued increase in...
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Canadian Science Publishing
2022
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ftdoajarticles:oai:doaj.org/article:5ea57a0e33d2472aa7b45bcdf353b226 2023-05-15T14:23:51+02:00 Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic Wesley Van Wychen Danielle A.M. Hallé Luke Copland Laurence Gray 2022-12-01T00:00:00Z https://doi.org/10.1139/as-2021-0039 https://doaj.org/article/5ea57a0e33d2472aa7b45bcdf353b226 EN FR eng fre Canadian Science Publishing https://cdnsciencepub.com/doi/10.1139/as-2021-0039 https://doaj.org/toc/2368-7460 doi:10.1139/as-2021-0039 2368-7460 https://doaj.org/article/5ea57a0e33d2472aa7b45bcdf353b226 Arctic Science, Vol 8, Iss 4, Pp 1288-1304 (2022) glacier surging slow surge Split Lake Glacier Prince of Wales Icefield glacier dynamics montée des glaciers Environmental sciences GE1-350 Environmental engineering TA170-171 article 2022 ftdoajarticles https://doi.org/10.1139/as-2021-0039 2022-12-30T19:37:42Z Here we use a variety of remote sensing data sets to characterize the evolving extent, surface features, dynamics, and surface elevations of Split Lake Glacier, a small outlet of the Prince of Wales Icefield, Nunavut. The glacier started advancing between 1959 and 1975, with a continued increase in terminus area up to the present day, coincident with significant upper elevation thinning and lower elevation thickening that cannot be accounted for by surface mass balance. The highest velocities reach >600 m year−1, with the region of fastest ice motion focused around an icefall that occurs in a bedrock constriction. Distinctive ogives are present in a 1975 air photo of the glacier for the first time, which suggests that rapid motion started by 1970. These patterns are anomalous when compared with the geometry, velocity, and area changes of all other nearby areas of western Prince of Wales Icefield and suggest that Split Lake Glacier may be a slowly surging glacier. The surge duration of 50+ years is longer than any other previously described surge within the Canadian Arctic Archipelago. These results give further information concerning the wide variety of dynamic and geometrical changes of glaciers across this region. Article in Journal/Newspaper Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Nunavut Directory of Open Access Journals: DOAJ Articles Arctic Canadian Arctic Archipelago Nunavut Prince of Wales Icefield ENVELOPE(-78.998,-78.998,78.252,78.252) Split Lake Glacier ENVELOPE(-81.661,-81.661,77.731,77.731) Arctic Science |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
glacier surging slow surge Split Lake Glacier Prince of Wales Icefield glacier dynamics montée des glaciers Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
glacier surging slow surge Split Lake Glacier Prince of Wales Icefield glacier dynamics montée des glaciers Environmental sciences GE1-350 Environmental engineering TA170-171 Wesley Van Wychen Danielle A.M. Hallé Luke Copland Laurence Gray Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
topic_facet |
glacier surging slow surge Split Lake Glacier Prince of Wales Icefield glacier dynamics montée des glaciers Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Here we use a variety of remote sensing data sets to characterize the evolving extent, surface features, dynamics, and surface elevations of Split Lake Glacier, a small outlet of the Prince of Wales Icefield, Nunavut. The glacier started advancing between 1959 and 1975, with a continued increase in terminus area up to the present day, coincident with significant upper elevation thinning and lower elevation thickening that cannot be accounted for by surface mass balance. The highest velocities reach >600 m year−1, with the region of fastest ice motion focused around an icefall that occurs in a bedrock constriction. Distinctive ogives are present in a 1975 air photo of the glacier for the first time, which suggests that rapid motion started by 1970. These patterns are anomalous when compared with the geometry, velocity, and area changes of all other nearby areas of western Prince of Wales Icefield and suggest that Split Lake Glacier may be a slowly surging glacier. The surge duration of 50+ years is longer than any other previously described surge within the Canadian Arctic Archipelago. These results give further information concerning the wide variety of dynamic and geometrical changes of glaciers across this region. |
format |
Article in Journal/Newspaper |
author |
Wesley Van Wychen Danielle A.M. Hallé Luke Copland Laurence Gray |
author_facet |
Wesley Van Wychen Danielle A.M. Hallé Luke Copland Laurence Gray |
author_sort |
Wesley Van Wychen |
title |
Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
title_short |
Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
title_full |
Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
title_fullStr |
Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
title_full_unstemmed |
Anomalous surface elevation, velocity, and area changes of Split Lake Glacier, western Prince of Wales Icefield, Canadian High Arctic |
title_sort |
anomalous surface elevation, velocity, and area changes of split lake glacier, western prince of wales icefield, canadian high arctic |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
https://doi.org/10.1139/as-2021-0039 https://doaj.org/article/5ea57a0e33d2472aa7b45bcdf353b226 |
long_lat |
ENVELOPE(-78.998,-78.998,78.252,78.252) ENVELOPE(-81.661,-81.661,77.731,77.731) |
geographic |
Arctic Canadian Arctic Archipelago Nunavut Prince of Wales Icefield Split Lake Glacier |
geographic_facet |
Arctic Canadian Arctic Archipelago Nunavut Prince of Wales Icefield Split Lake Glacier |
genre |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Nunavut |
genre_facet |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Nunavut |
op_source |
Arctic Science, Vol 8, Iss 4, Pp 1288-1304 (2022) |
op_relation |
https://cdnsciencepub.com/doi/10.1139/as-2021-0039 https://doaj.org/toc/2368-7460 doi:10.1139/as-2021-0039 2368-7460 https://doaj.org/article/5ea57a0e33d2472aa7b45bcdf353b226 |
op_doi |
https://doi.org/10.1139/as-2021-0039 |
container_title |
Arctic Science |
_version_ |
1766296321776418816 |