The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories
The closing of thermal contraction (ice-wedge) cracks at Garry Island, N.W.T., 150 km northwest of Inuvik, N.W.T., has been measured by means of gauge probes inserted into the cracks and by precise taping between bench marks across ice-wedge troughs. The results show that a simple elastic model fail...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1975
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Online Access: | http://dx.doi.org/10.1139/e75-146 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-146 |
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crcansciencepubl:10.1139/e75-146 2023-12-17T10:31:30+01:00 The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories Mackay, J. Ross 1975 http://dx.doi.org/10.1139/e75-146 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-146 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 12, issue 9, page 1668-1674 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1975 crcansciencepubl https://doi.org/10.1139/e75-146 2023-11-19T13:39:17Z The closing of thermal contraction (ice-wedge) cracks at Garry Island, N.W.T., 150 km northwest of Inuvik, N.W.T., has been measured by means of gauge probes inserted into the cracks and by precise taping between bench marks across ice-wedge troughs. The results show that a simple elastic model fails to explain the time of cracking, the depth of cracking, the crack spacing, and the time of closing. The mean annual ice vein increment, at Garry Island, is probably less than 20% of the mean winter crack width. Thermal contraction cracks are of potential engineering interest, because they may affect underground cables, reservoirs, and other man-made structures. Article in Journal/Newspaper Ice Inuvik Northwest Territories permafrost wedge* Canadian Science Publishing (via Crossref) Northwest Territories Inuvik ENVELOPE(-133.610,-133.610,68.341,68.341) Garry ENVELOPE(-62.233,-62.233,-63.350,-63.350) Garry Island ENVELOPE(-135.717,-135.717,69.487,69.487) Canadian Journal of Earth Sciences 12 9 1668 1674 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Mackay, J. Ross The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
topic_facet |
General Earth and Planetary Sciences |
description |
The closing of thermal contraction (ice-wedge) cracks at Garry Island, N.W.T., 150 km northwest of Inuvik, N.W.T., has been measured by means of gauge probes inserted into the cracks and by precise taping between bench marks across ice-wedge troughs. The results show that a simple elastic model fails to explain the time of cracking, the depth of cracking, the crack spacing, and the time of closing. The mean annual ice vein increment, at Garry Island, is probably less than 20% of the mean winter crack width. Thermal contraction cracks are of potential engineering interest, because they may affect underground cables, reservoirs, and other man-made structures. |
format |
Article in Journal/Newspaper |
author |
Mackay, J. Ross |
author_facet |
Mackay, J. Ross |
author_sort |
Mackay, J. Ross |
title |
The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
title_short |
The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
title_full |
The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
title_fullStr |
The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
title_full_unstemmed |
The Closing of Ice-wedge Cracks in Permafrost, Garry Island, Northwest Territories |
title_sort |
closing of ice-wedge cracks in permafrost, garry island, northwest territories |
publisher |
Canadian Science Publishing |
publishDate |
1975 |
url |
http://dx.doi.org/10.1139/e75-146 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-146 |
long_lat |
ENVELOPE(-133.610,-133.610,68.341,68.341) ENVELOPE(-62.233,-62.233,-63.350,-63.350) ENVELOPE(-135.717,-135.717,69.487,69.487) |
geographic |
Northwest Territories Inuvik Garry Garry Island |
geographic_facet |
Northwest Territories Inuvik Garry Garry Island |
genre |
Ice Inuvik Northwest Territories permafrost wedge* |
genre_facet |
Ice Inuvik Northwest Territories permafrost wedge* |
op_source |
Canadian Journal of Earth Sciences volume 12, issue 9, page 1668-1674 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e75-146 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
12 |
container_issue |
9 |
container_start_page |
1668 |
op_container_end_page |
1674 |
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1785584823658610688 |