Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon
Dań Zhùr (Donjek) Glacier is a surge-type glacier that undergoes cyclical periods of rapid advance over ∼1–2 years, followed by retreat for ∼10 years. Since the 1990s, the advances have caused the formation of ice-dammed Dań Zhùr Lake, which has filled and drained in summers following a surge event....
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2023
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crcansciencepubl:10.1139/as-2023-0001 2023-12-17T10:22:40+01:00 Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon Painter, Moya Copland, Luke Dow, Christine Kochtitzky, Will Medrzycka, Dorota 2023 http://dx.doi.org/10.1139/as-2023-0001 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2023-0001 https://cdnsciencepub.com/doi/pdf/10.1139/as-2023-0001 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Arctic Science ISSN 2368-7460 General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science journal-article 2023 crcansciencepubl https://doi.org/10.1139/as-2023-0001 2023-11-19T13:38:40Z Dań Zhùr (Donjek) Glacier is a surge-type glacier that undergoes cyclical periods of rapid advance over ∼1–2 years, followed by retreat for ∼10 years. Since the 1990s, the advances have caused the formation of ice-dammed Dań Zhùr Lake, which has filled and drained in summers following a surge event. Here, we report how these drainages initially occur through a subglacial channel under the glacier terminus, which then typically closes the following winter, enabling another lake to form and drain the next summer. However, our remote sensing and field observations indicate that after several drainage events, a subaerial ice canyon is formed through the glacier terminus, which prevents another lake from forming until after the glacier surges again. We predict that the next surge of Dań Zhùr Glacier will occur around the mid-2020s, causing the formation of a larger Dań Zhùr Lake during the following quiescent phase because, despite periodic advances, a long-term trend of glacier recession is exposing a larger basin for the lake to form in. However, each subsequent surge is causing less terminus advance than the previous one, until ultimately the surges will be insufficient to dam Dań Zhùr Chù’ (Donjek River), and lakes will cease to form. Article in Journal/Newspaper Arctic Yukon Canadian Science Publishing (via Crossref) Yukon Donjek Glacier ENVELOPE(-139.718,-139.718,61.059,61.059) Donjek River ENVELOPE(-140.004,-140.004,62.602,62.602) Arctic Science |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science Painter, Moya Copland, Luke Dow, Christine Kochtitzky, Will Medrzycka, Dorota Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
topic_facet |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
description |
Dań Zhùr (Donjek) Glacier is a surge-type glacier that undergoes cyclical periods of rapid advance over ∼1–2 years, followed by retreat for ∼10 years. Since the 1990s, the advances have caused the formation of ice-dammed Dań Zhùr Lake, which has filled and drained in summers following a surge event. Here, we report how these drainages initially occur through a subglacial channel under the glacier terminus, which then typically closes the following winter, enabling another lake to form and drain the next summer. However, our remote sensing and field observations indicate that after several drainage events, a subaerial ice canyon is formed through the glacier terminus, which prevents another lake from forming until after the glacier surges again. We predict that the next surge of Dań Zhùr Glacier will occur around the mid-2020s, causing the formation of a larger Dań Zhùr Lake during the following quiescent phase because, despite periodic advances, a long-term trend of glacier recession is exposing a larger basin for the lake to form in. However, each subsequent surge is causing less terminus advance than the previous one, until ultimately the surges will be insufficient to dam Dań Zhùr Chù’ (Donjek River), and lakes will cease to form. |
format |
Article in Journal/Newspaper |
author |
Painter, Moya Copland, Luke Dow, Christine Kochtitzky, Will Medrzycka, Dorota |
author_facet |
Painter, Moya Copland, Luke Dow, Christine Kochtitzky, Will Medrzycka, Dorota |
author_sort |
Painter, Moya |
title |
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
title_short |
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
title_full |
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
title_fullStr |
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
title_full_unstemmed |
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon |
title_sort |
patterns and mechanisms of repeat drainages of glacier-dammed dań zhùr (donjek) lake, yukon |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1139/as-2023-0001 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2023-0001 https://cdnsciencepub.com/doi/pdf/10.1139/as-2023-0001 |
long_lat |
ENVELOPE(-139.718,-139.718,61.059,61.059) ENVELOPE(-140.004,-140.004,62.602,62.602) |
geographic |
Yukon Donjek Glacier Donjek River |
geographic_facet |
Yukon Donjek Glacier Donjek River |
genre |
Arctic Yukon |
genre_facet |
Arctic Yukon |
op_source |
Arctic Science ISSN 2368-7460 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.en_GB |
op_doi |
https://doi.org/10.1139/as-2023-0001 |
container_title |
Arctic Science |
_version_ |
1785551298418966528 |