Thermal studies related to surging glaciers
Deep-ice temperature measurements have been made in two surge-type glaciers in the Yukon Territory, Canada. Cold ice warming towards the bed was found in Trapridge Glacier and a model of basal ice temperatures predicts large regions of basal temperate ice. Thermal regulation of the surge behavior of...
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University of British Columbia
1973
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ftunivbritcolcir:oai:circle.library.ubc.ca:2429/32891 2023-05-15T16:22:26+02:00 Thermal studies related to surging glaciers Jarvis, Gary Trevor 1973 http://hdl.handle.net/2429/32891 eng eng University of British Columbia For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Glaciers Text Thesis/Dissertation 1973 ftunivbritcolcir 2019-10-15T18:02:55Z Deep-ice temperature measurements have been made in two surge-type glaciers in the Yukon Territory, Canada. Cold ice warming towards the bed was found in Trapridge Glacier and a model of basal ice temperatures predicts large regions of basal temperate ice. Thermal regulation of the surge behavior of this small glacier is inferred; theoretical considerations show that this hypothesis can reasonably be extended to large surging glaciers as well. Temperatures below 0°C were also recorded on Steele Glacier. An anomalously warm layer was detected at a depth of approximately 50 m. This is attributed to the severe crevassing associated with a glacier surge. Numerical modelling of the effects of water-filled crevasses in a cold glacier, refreezing and injecting latent heat into the ice, predicts temperature profiles very similar to that observed. The model further predicts long term maintenance of the resulting trapped water pockets and, in small surging glaciers, a thermal memory of the initial crevassing throughout the entire quiescent phase. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate Thesis glacier* Yukon University of British Columbia: cIRcle - UBC's Information Repository Canada Steele ENVELOPE(-60.710,-60.710,-70.980,-70.980) Steele Glacier ENVELOPE(-140.171,-140.171,61.249,61.249) Trapridge Glacier ENVELOPE(-140.337,-140.337,61.233,61.233) Yukon |
institution |
Open Polar |
collection |
University of British Columbia: cIRcle - UBC's Information Repository |
op_collection_id |
ftunivbritcolcir |
language |
English |
topic |
Glaciers |
spellingShingle |
Glaciers Jarvis, Gary Trevor Thermal studies related to surging glaciers |
topic_facet |
Glaciers |
description |
Deep-ice temperature measurements have been made in two surge-type glaciers in the Yukon Territory, Canada. Cold ice warming towards the bed was found in Trapridge Glacier and a model of basal ice temperatures predicts large regions of basal temperate ice. Thermal regulation of the surge behavior of this small glacier is inferred; theoretical considerations show that this hypothesis can reasonably be extended to large surging glaciers as well. Temperatures below 0°C were also recorded on Steele Glacier. An anomalously warm layer was detected at a depth of approximately 50 m. This is attributed to the severe crevassing associated with a glacier surge. Numerical modelling of the effects of water-filled crevasses in a cold glacier, refreezing and injecting latent heat into the ice, predicts temperature profiles very similar to that observed. The model further predicts long term maintenance of the resulting trapped water pockets and, in small surging glaciers, a thermal memory of the initial crevassing throughout the entire quiescent phase. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate |
format |
Thesis |
author |
Jarvis, Gary Trevor |
author_facet |
Jarvis, Gary Trevor |
author_sort |
Jarvis, Gary Trevor |
title |
Thermal studies related to surging glaciers |
title_short |
Thermal studies related to surging glaciers |
title_full |
Thermal studies related to surging glaciers |
title_fullStr |
Thermal studies related to surging glaciers |
title_full_unstemmed |
Thermal studies related to surging glaciers |
title_sort |
thermal studies related to surging glaciers |
publisher |
University of British Columbia |
publishDate |
1973 |
url |
http://hdl.handle.net/2429/32891 |
long_lat |
ENVELOPE(-60.710,-60.710,-70.980,-70.980) ENVELOPE(-140.171,-140.171,61.249,61.249) ENVELOPE(-140.337,-140.337,61.233,61.233) |
geographic |
Canada Steele Steele Glacier Trapridge Glacier Yukon |
geographic_facet |
Canada Steele Steele Glacier Trapridge Glacier Yukon |
genre |
glacier* Yukon |
genre_facet |
glacier* Yukon |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
_version_ |
1766010412151603200 |