Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques
This thesis investigates the nature and distribution of ground ice occurrences on the central Fosheim Peninsula, Ellesmere Island, and assesses the potential for thermokarst in light of possible climatic warming. Field observations conducted in 1990 and 1991 involved geomorphological and cryostratig...
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McGill University
1992
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ftcanadathes:oai:collectionscanada.gc.ca:QMM.56907 2023-05-15T16:05:55+02:00 Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques Barry, Peter Pollard, W. H. (advisor) Master of Science (Department of Geography.) 1992 application/pdf http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56907 en eng McGill University alephsysno: 001325991 proquestno: AAIMM87613 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56907 All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. Frozen ground -- Nunavut -- Ellesmere Island Electronic Thesis or Dissertation 1992 ftcanadathes 2014-02-16T01:04:26Z This thesis investigates the nature and distribution of ground ice occurrences on the central Fosheim Peninsula, Ellesmere Island, and assesses the potential for thermokarst in light of possible climatic warming. Field observations conducted in 1990 and 1991 involved geomorphological and cryostratigraphic examinations of twenty-eight ground ice sections exposed in retrogressive thaw slumps and ground probing radar surveys of two of the thaw slumps. Samples were taken of ground ice and sediments exposed in thaw slump headwalls for laboratory analysis. Samples were analyzed for moisture content, grain size distribution, and Atterberg limits. Gravimetric ice contents were calculated and an average ice content profile was constructed for the study area. Ground ice was found to be an important component of permafrost on the Fosheim Peninsula and was widely observed in Holocene marine sediments. The ice occurred in two stratigraphic settings at depths of one to five meters in silt and clay, and at ten meters or deeper beneath massive clay. Ice contents were generally found to increase rapidly with depth down to three meters, below which ice content was stabilized. Ground probing radar was found to be a useful tool for permafrost research, given its ability to discriminate between ice and soil, as well as between frozen and unfrozen water. Thesis Ellesmere Island Fosheim Peninsula Ice Nunavut permafrost Thermokarst Theses Canada/Thèses Canada (Library and Archives Canada) Ellesmere Island Fosheim Peninsula ENVELOPE(-83.749,-83.749,79.669,79.669) Nunavut |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Frozen ground -- Nunavut -- Ellesmere Island |
spellingShingle |
Frozen ground -- Nunavut -- Ellesmere Island Barry, Peter Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
topic_facet |
Frozen ground -- Nunavut -- Ellesmere Island |
description |
This thesis investigates the nature and distribution of ground ice occurrences on the central Fosheim Peninsula, Ellesmere Island, and assesses the potential for thermokarst in light of possible climatic warming. Field observations conducted in 1990 and 1991 involved geomorphological and cryostratigraphic examinations of twenty-eight ground ice sections exposed in retrogressive thaw slumps and ground probing radar surveys of two of the thaw slumps. Samples were taken of ground ice and sediments exposed in thaw slump headwalls for laboratory analysis. Samples were analyzed for moisture content, grain size distribution, and Atterberg limits. Gravimetric ice contents were calculated and an average ice content profile was constructed for the study area. Ground ice was found to be an important component of permafrost on the Fosheim Peninsula and was widely observed in Holocene marine sediments. The ice occurred in two stratigraphic settings at depths of one to five meters in silt and clay, and at ten meters or deeper beneath massive clay. Ice contents were generally found to increase rapidly with depth down to three meters, below which ice content was stabilized. Ground probing radar was found to be a useful tool for permafrost research, given its ability to discriminate between ice and soil, as well as between frozen and unfrozen water. |
author2 |
Pollard, W. H. (advisor) |
format |
Thesis |
author |
Barry, Peter |
author_facet |
Barry, Peter |
author_sort |
Barry, Peter |
title |
Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
title_short |
Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
title_full |
Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
title_fullStr |
Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
title_full_unstemmed |
Ground ice characteristics in permafrost on the Fosheim Peninsula, Ellesmere Island, N.W.T. : a study utilizing ground probing radar and geomorphological techniques |
title_sort |
ground ice characteristics in permafrost on the fosheim peninsula, ellesmere island, n.w.t. : a study utilizing ground probing radar and geomorphological techniques |
publisher |
McGill University |
publishDate |
1992 |
url |
http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56907 |
op_coverage |
Master of Science (Department of Geography.) |
long_lat |
ENVELOPE(-83.749,-83.749,79.669,79.669) |
geographic |
Ellesmere Island Fosheim Peninsula Nunavut |
geographic_facet |
Ellesmere Island Fosheim Peninsula Nunavut |
genre |
Ellesmere Island Fosheim Peninsula Ice Nunavut permafrost Thermokarst |
genre_facet |
Ellesmere Island Fosheim Peninsula Ice Nunavut permafrost Thermokarst |
op_relation |
alephsysno: 001325991 proquestno: AAIMM87613 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56907 |
op_rights |
All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1766401834871685120 |