Heat transfer within frozen slopes in subarctic Yukon, Canada
The dominant mechanism of heat transfer during ground thaw is typically assumed to be vertical conduction. However, the addition of lateral subsurface water flow introduces the potential for the forced convection of energy, having an influence on ground temperatures and thaw rates. Field observation...
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Online Access: | http://dx.doi.org/10.1680/jenge.15.00058 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00058 |
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crtelford:10.1680/jenge.15.00058 2023-05-15T18:28:28+02:00 Heat transfer within frozen slopes in subarctic Yukon, Canada Steeves, Joel T Barbour, Sidney Lee Ferguson, Grant Carey, Sean K 2019 http://dx.doi.org/10.1680/jenge.15.00058 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00058 en eng Thomas Telford Ltd. Environmental Geotechnics volume 6, issue 6, page 420-429 ISSN 2051-803X Management, Monitoring, Policy and Law Nature and Landscape Conservation Geochemistry and Petrology Waste Management and Disposal Geotechnical Engineering and Engineering Geology Water Science and Technology Environmental Chemistry Environmental Engineering journal-article 2019 crtelford https://doi.org/10.1680/jenge.15.00058 2022-10-04T10:16:56Z The dominant mechanism of heat transfer during ground thaw is typically assumed to be vertical conduction. However, the addition of lateral subsurface water flow introduces the potential for the forced convection of energy, having an influence on ground temperatures and thaw rates. Field observations of snowmelt run-off and rates of ground thaw for two slopes within the Wolf Creek basin, Yukon, Canada, highlighted different rates of ground thaw with slope position. Ground temperatures were numerically simulated to evaluate the relative influence of conduction and convection on the thawing of these slopes; each slope comprised different soils and had a different slope aspect. Both slopes were composed of an organic layer overlying a mineral soil. Lateral water flow above the frozen layer occurred within both slopes as a result of a perched saturated zone above the organic–mineral interface. The numerical models reveal that lateral diversion within a surficial, high-hydraulic conductivity layer, such as an organic layer, can initiate convective heat transfer. However, the observed differential thaw was determined to be a result of conduction and variations in the initial ice content and snow cover rather than lateral convection of heat. Article in Journal/Newspaper Subarctic Yukon ICE Virtual Library (ICE Publishing - via Crossref) Canada Yukon Environmental Geotechnics 6 6 420 429 |
institution |
Open Polar |
collection |
ICE Virtual Library (ICE Publishing - via Crossref) |
op_collection_id |
crtelford |
language |
English |
topic |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Geochemistry and Petrology Waste Management and Disposal Geotechnical Engineering and Engineering Geology Water Science and Technology Environmental Chemistry Environmental Engineering |
spellingShingle |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Geochemistry and Petrology Waste Management and Disposal Geotechnical Engineering and Engineering Geology Water Science and Technology Environmental Chemistry Environmental Engineering Steeves, Joel T Barbour, Sidney Lee Ferguson, Grant Carey, Sean K Heat transfer within frozen slopes in subarctic Yukon, Canada |
topic_facet |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Geochemistry and Petrology Waste Management and Disposal Geotechnical Engineering and Engineering Geology Water Science and Technology Environmental Chemistry Environmental Engineering |
description |
The dominant mechanism of heat transfer during ground thaw is typically assumed to be vertical conduction. However, the addition of lateral subsurface water flow introduces the potential for the forced convection of energy, having an influence on ground temperatures and thaw rates. Field observations of snowmelt run-off and rates of ground thaw for two slopes within the Wolf Creek basin, Yukon, Canada, highlighted different rates of ground thaw with slope position. Ground temperatures were numerically simulated to evaluate the relative influence of conduction and convection on the thawing of these slopes; each slope comprised different soils and had a different slope aspect. Both slopes were composed of an organic layer overlying a mineral soil. Lateral water flow above the frozen layer occurred within both slopes as a result of a perched saturated zone above the organic–mineral interface. The numerical models reveal that lateral diversion within a surficial, high-hydraulic conductivity layer, such as an organic layer, can initiate convective heat transfer. However, the observed differential thaw was determined to be a result of conduction and variations in the initial ice content and snow cover rather than lateral convection of heat. |
format |
Article in Journal/Newspaper |
author |
Steeves, Joel T Barbour, Sidney Lee Ferguson, Grant Carey, Sean K |
author_facet |
Steeves, Joel T Barbour, Sidney Lee Ferguson, Grant Carey, Sean K |
author_sort |
Steeves, Joel T |
title |
Heat transfer within frozen slopes in subarctic Yukon, Canada |
title_short |
Heat transfer within frozen slopes in subarctic Yukon, Canada |
title_full |
Heat transfer within frozen slopes in subarctic Yukon, Canada |
title_fullStr |
Heat transfer within frozen slopes in subarctic Yukon, Canada |
title_full_unstemmed |
Heat transfer within frozen slopes in subarctic Yukon, Canada |
title_sort |
heat transfer within frozen slopes in subarctic yukon, canada |
publisher |
Thomas Telford Ltd. |
publishDate |
2019 |
url |
http://dx.doi.org/10.1680/jenge.15.00058 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00058 |
geographic |
Canada Yukon |
geographic_facet |
Canada Yukon |
genre |
Subarctic Yukon |
genre_facet |
Subarctic Yukon |
op_source |
Environmental Geotechnics volume 6, issue 6, page 420-429 ISSN 2051-803X |
op_doi |
https://doi.org/10.1680/jenge.15.00058 |
container_title |
Environmental Geotechnics |
container_volume |
6 |
container_issue |
6 |
container_start_page |
420 |
op_container_end_page |
429 |
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1766210957666680832 |