A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada
Abstract Icing occurs each winter along the floodplain of the Kuuguluk River in the continuous permafrost zone at Salluit in Nunavik (Quebec), Canada. The source of successive water overflows which thicken and enlarge this ice cover over time is suprapermafrost groundwater discharging from a talik b...
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crwiley:10.1002/ppp.2111 2024-06-02T08:08:00+00:00 A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada Liu, Weibo Fortier, Richard Molson, John Lemieux, Jean‐Michel Canada First Research Excellence Fund Québec Ministère du Développement Durable, de l’Environnement et de la Lutte Contre les Changements Climatiques Natural Sciences and Engineering Research Council of Canada Institut national de la recherche scientifique 2021 http://dx.doi.org/10.1002/ppp.2111 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2111 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2111 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 32, issue 3, page 468-483 ISSN 1045-6740 1099-1530 journal-article 2021 crwiley https://doi.org/10.1002/ppp.2111 2024-05-03T11:58:28Z Abstract Icing occurs each winter along the floodplain of the Kuuguluk River in the continuous permafrost zone at Salluit in Nunavik (Quebec), Canada. The source of successive water overflows which thicken and enlarge this ice cover over time is suprapermafrost groundwater discharging from a talik below the riverbed. Electrical resistivity tomography was used to delineate the talik, while water level and temperature dataloggers were used to assess the thermo‐hydraulic conditions of the riverbed. The mean annual riverbed temperature was 1.8°C in 2016 while the mean annual air temperature was −6.0°C. Hydraulic heads below the ice cover as high as 2.8 m and events of abrupt decreases in hydraulic head due to suprapermafrost groundwater overflow through cracks in the ice cover were monitored. An analytical solution based on beam mechanics theory was used to assess the water pressure‐induced stresses which are sufficient to fracture the ice cover. A detailed conceptual model of the talik and icing dynamics is proposed to explain the cryo‐hydrogeological processes taking place in this complex groundwater–river system. The groundwater pressure buildup in the talik during the winter is due to constricted flow of suprapermafrost groundwater in the talik. These results have implications for understanding the dynamics of river taliks and their use as potential water supplies in northern communities. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Salluit Nunavik Wiley Online Library Nunavik Canada Talik ENVELOPE(146.601,146.601,59.667,59.667) Salluit ENVELOPE(-75.643,-75.643,62.204,62.204) Permafrost and Periglacial Processes |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Icing occurs each winter along the floodplain of the Kuuguluk River in the continuous permafrost zone at Salluit in Nunavik (Quebec), Canada. The source of successive water overflows which thicken and enlarge this ice cover over time is suprapermafrost groundwater discharging from a talik below the riverbed. Electrical resistivity tomography was used to delineate the talik, while water level and temperature dataloggers were used to assess the thermo‐hydraulic conditions of the riverbed. The mean annual riverbed temperature was 1.8°C in 2016 while the mean annual air temperature was −6.0°C. Hydraulic heads below the ice cover as high as 2.8 m and events of abrupt decreases in hydraulic head due to suprapermafrost groundwater overflow through cracks in the ice cover were monitored. An analytical solution based on beam mechanics theory was used to assess the water pressure‐induced stresses which are sufficient to fracture the ice cover. A detailed conceptual model of the talik and icing dynamics is proposed to explain the cryo‐hydrogeological processes taking place in this complex groundwater–river system. The groundwater pressure buildup in the talik during the winter is due to constricted flow of suprapermafrost groundwater in the talik. These results have implications for understanding the dynamics of river taliks and their use as potential water supplies in northern communities. |
author2 |
Canada First Research Excellence Fund Québec Ministère du Développement Durable, de l’Environnement et de la Lutte Contre les Changements Climatiques Natural Sciences and Engineering Research Council of Canada Institut national de la recherche scientifique |
format |
Article in Journal/Newspaper |
author |
Liu, Weibo Fortier, Richard Molson, John Lemieux, Jean‐Michel |
spellingShingle |
Liu, Weibo Fortier, Richard Molson, John Lemieux, Jean‐Michel A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
author_facet |
Liu, Weibo Fortier, Richard Molson, John Lemieux, Jean‐Michel |
author_sort |
Liu, Weibo |
title |
A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
title_short |
A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
title_full |
A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
title_fullStr |
A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
title_full_unstemmed |
A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada |
title_sort |
conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at salluit, nunavik (quebec), canada |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ppp.2111 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2111 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2111 |
long_lat |
ENVELOPE(146.601,146.601,59.667,59.667) ENVELOPE(-75.643,-75.643,62.204,62.204) |
geographic |
Nunavik Canada Talik Salluit |
geographic_facet |
Nunavik Canada Talik Salluit |
genre |
Ice permafrost Permafrost and Periglacial Processes Salluit Nunavik |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Salluit Nunavik |
op_source |
Permafrost and Periglacial Processes volume 32, issue 3, page 468-483 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2111 |
container_title |
Permafrost and Periglacial Processes |
_version_ |
1800753160647606272 |