Icings and groundwater conditions in permafrost catchments of northwestern Canada
Abstract Icings are sheet-like masses of ice that form on the ground surface or in fluvial channels from groundwater seepage. Although the presence of icings in the landscape is known, few studies investigated their regional distribution and explored relations with terrain factors including permafro...
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ftdoajarticles:oai:doaj.org/article:5110c89e93994117b8f4bf87e02d23a6 2023-05-15T16:36:56+02:00 Icings and groundwater conditions in permafrost catchments of northwestern Canada Hugo Crites Steve V. Kokelj Denis Lacelle 2020-02-01T00:00:00Z https://doi.org/10.1038/s41598-020-60322-w https://doaj.org/article/5110c89e93994117b8f4bf87e02d23a6 EN eng Nature Portfolio https://doi.org/10.1038/s41598-020-60322-w https://doaj.org/toc/2045-2322 doi:10.1038/s41598-020-60322-w 2045-2322 https://doaj.org/article/5110c89e93994117b8f4bf87e02d23a6 Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020) Medicine R Science Q article 2020 ftdoajarticles https://doi.org/10.1038/s41598-020-60322-w 2022-12-31T05:23:14Z Abstract Icings are sheet-like masses of ice that form on the ground surface or in fluvial channels from groundwater seepage. Although the presence of icings in the landscape is known, few studies investigated their regional distribution and explored relations with terrain factors including permafrost and winter baseflow conditions. Here, we mapped the distribution of icings in a 618,430 km2 area of northwestern Canada from a stack of 573 Landsat imageries (1985–2017) and determined using hydrometric data the winter baseflow contribution to the total annual discharge of 17 rivers in the study area. The 1402 mapped icings occur preferentially at the foothills of heavily faulted karstic mountainous regions in the continuous permafrost. Winter baseflow and its contribution to annual discharge was lower in continuous permafrost catchments than in discontinuous permafrost but showed a general increase over the 1970–2016 period. As such, the distribution of icings appears to be sensitive to winter air temperatures and winter baseflow conditions and icings located at the southern boundary of continuous permafrost would be more sensitive to degrading permafrost and the predicted increase in winter baseflow. Article in Journal/Newspaper Ice permafrost Directory of Open Access Journals: DOAJ Articles Canada Scientific Reports 10 1 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
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topic |
Medicine R Science Q |
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Medicine R Science Q Hugo Crites Steve V. Kokelj Denis Lacelle Icings and groundwater conditions in permafrost catchments of northwestern Canada |
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Medicine R Science Q |
description |
Abstract Icings are sheet-like masses of ice that form on the ground surface or in fluvial channels from groundwater seepage. Although the presence of icings in the landscape is known, few studies investigated their regional distribution and explored relations with terrain factors including permafrost and winter baseflow conditions. Here, we mapped the distribution of icings in a 618,430 km2 area of northwestern Canada from a stack of 573 Landsat imageries (1985–2017) and determined using hydrometric data the winter baseflow contribution to the total annual discharge of 17 rivers in the study area. The 1402 mapped icings occur preferentially at the foothills of heavily faulted karstic mountainous regions in the continuous permafrost. Winter baseflow and its contribution to annual discharge was lower in continuous permafrost catchments than in discontinuous permafrost but showed a general increase over the 1970–2016 period. As such, the distribution of icings appears to be sensitive to winter air temperatures and winter baseflow conditions and icings located at the southern boundary of continuous permafrost would be more sensitive to degrading permafrost and the predicted increase in winter baseflow. |
format |
Article in Journal/Newspaper |
author |
Hugo Crites Steve V. Kokelj Denis Lacelle |
author_facet |
Hugo Crites Steve V. Kokelj Denis Lacelle |
author_sort |
Hugo Crites |
title |
Icings and groundwater conditions in permafrost catchments of northwestern Canada |
title_short |
Icings and groundwater conditions in permafrost catchments of northwestern Canada |
title_full |
Icings and groundwater conditions in permafrost catchments of northwestern Canada |
title_fullStr |
Icings and groundwater conditions in permafrost catchments of northwestern Canada |
title_full_unstemmed |
Icings and groundwater conditions in permafrost catchments of northwestern Canada |
title_sort |
icings and groundwater conditions in permafrost catchments of northwestern canada |
publisher |
Nature Portfolio |
publishDate |
2020 |
url |
https://doi.org/10.1038/s41598-020-60322-w https://doaj.org/article/5110c89e93994117b8f4bf87e02d23a6 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020) |
op_relation |
https://doi.org/10.1038/s41598-020-60322-w https://doaj.org/toc/2045-2322 doi:10.1038/s41598-020-60322-w 2045-2322 https://doaj.org/article/5110c89e93994117b8f4bf87e02d23a6 |
op_doi |
https://doi.org/10.1038/s41598-020-60322-w |
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Scientific Reports |
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10 |
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1 |
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1766027246007484416 |