Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba
Soil temperatures and active layer depths were recorded near Churchill, Manitoba to determine the near-surface thermal regime for three different permafrost terrains. Soil moisture and net radiation were measured also. The interaction between the heat and water balance of the active layer was invest...
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ftmcmaster:oai:macsphere.mcmaster.ca:11375/6129 2023-05-15T15:55:03+02:00 Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba Gourlay, Jean Patricia Rouse, Wayne R. Geography 2009-07-27 http://hdl.handle.net/11375/6129 unknown opendissertations/146 1468 912170 http://hdl.handle.net/11375/6129 Geography thesis 2009 ftmcmaster 2022-03-22T21:09:34Z Soil temperatures and active layer depths were recorded near Churchill, Manitoba to determine the near-surface thermal regime for three different permafrost terrains. Soil moisture and net radiation were measured also. The interaction between the heat and water balance of the active layer was investigated to observe the short term effects of water movement on active layer development. Results show that the soil heat component of the surface energy budget composed 18% of the net radiation in the grassland, 14% in the peat and 13% in the tundra. In all terrains at least 93% of the soil heat is consumed in latent heat of fusion. Evaluation of the water budget indicates a large subsurface water loss from the upland tundra and a moderate gain in the grass lowlands during the summer period. Active layer development is shown to respond to both the conductive heat flux and the thermal exports and imports associated with the subsurface water flux. Master of Science (MS) Thesis Churchill permafrost Tundra MacSphere (McMaster University) |
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MacSphere (McMaster University) |
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Geography |
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Geography Gourlay, Jean Patricia Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
topic_facet |
Geography |
description |
Soil temperatures and active layer depths were recorded near Churchill, Manitoba to determine the near-surface thermal regime for three different permafrost terrains. Soil moisture and net radiation were measured also. The interaction between the heat and water balance of the active layer was investigated to observe the short term effects of water movement on active layer development. Results show that the soil heat component of the surface energy budget composed 18% of the net radiation in the grassland, 14% in the peat and 13% in the tundra. In all terrains at least 93% of the soil heat is consumed in latent heat of fusion. Evaluation of the water budget indicates a large subsurface water loss from the upland tundra and a moderate gain in the grass lowlands during the summer period. Active layer development is shown to respond to both the conductive heat flux and the thermal exports and imports associated with the subsurface water flux. Master of Science (MS) |
author2 |
Rouse, Wayne R. Geography |
format |
Thesis |
author |
Gourlay, Jean Patricia |
author_facet |
Gourlay, Jean Patricia |
author_sort |
Gourlay, Jean Patricia |
title |
Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
title_short |
Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
title_full |
Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
title_fullStr |
Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
title_full_unstemmed |
Near-Surface Soil Heat and Water Fluxes in Different Permafrost Terrains, Churchill, Manitoba |
title_sort |
near-surface soil heat and water fluxes in different permafrost terrains, churchill, manitoba |
publishDate |
2009 |
url |
http://hdl.handle.net/11375/6129 |
genre |
Churchill permafrost Tundra |
genre_facet |
Churchill permafrost Tundra |
op_relation |
opendissertations/146 1468 912170 http://hdl.handle.net/11375/6129 |
_version_ |
1766390397276258304 |