A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada
Using data contained in the Mackenzie Valley Geotechnical Data Bank together with data derived from morphometric analyses of topographic maps and air photographs, the volume of ground ice present in the upper 10 m of Richards Island is calculated to be 10.27 km 3 . Pore and segregated ice constitute...
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Language: | English |
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Canadian Science Publishing
1980
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Online Access: | http://dx.doi.org/10.1139/t80-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/t80-059 |
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crcansciencepubl:10.1139/t80-059 2024-04-28T08:10:29+00:00 A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada Pollard, W. H. French, H. M. 1980 http://dx.doi.org/10.1139/t80-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/t80-059 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 17, issue 4, page 509-516 ISSN 0008-3674 1208-6010 Civil and Structural Engineering Geotechnical Engineering and Engineering Geology journal-article 1980 crcansciencepubl https://doi.org/10.1139/t80-059 2024-04-09T06:56:26Z Using data contained in the Mackenzie Valley Geotechnical Data Bank together with data derived from morphometric analyses of topographic maps and air photographs, the volume of ground ice present in the upper 10 m of Richards Island is calculated to be 10.27 km 3 . Pore and segregated ice constitute over 80% of the total ice volume. Wedge ice constitutes between 12 and 16% of total ice volume in the upper 4.5 m, and approximately 36% of all excess ice. In the upper 1–2 m, wedge ice may exceed 50% of earth materials. Pingo ice is insignificant in terms of its contribution to total ice volumes. Excess ice constitutes 14% of the upper 10 m of permafrost; it follows that thawing of this layer of permafrost may lead to an average subsidence of 1.4 m.The results of this study are probably typical of other areas of the Pleistocene Mackenzie delta. There is also general agreement with data obtained from arctic Alaska. Article in Journal/Newspaper Arctic Ice Mackenzie Delta Mackenzie Valley Northwest Territories permafrost Richards Island wedge* Alaska Canadian Science Publishing Canadian Geotechnical Journal 17 4 509 516 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology |
spellingShingle |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology Pollard, W. H. French, H. M. A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
topic_facet |
Civil and Structural Engineering Geotechnical Engineering and Engineering Geology |
description |
Using data contained in the Mackenzie Valley Geotechnical Data Bank together with data derived from morphometric analyses of topographic maps and air photographs, the volume of ground ice present in the upper 10 m of Richards Island is calculated to be 10.27 km 3 . Pore and segregated ice constitute over 80% of the total ice volume. Wedge ice constitutes between 12 and 16% of total ice volume in the upper 4.5 m, and approximately 36% of all excess ice. In the upper 1–2 m, wedge ice may exceed 50% of earth materials. Pingo ice is insignificant in terms of its contribution to total ice volumes. Excess ice constitutes 14% of the upper 10 m of permafrost; it follows that thawing of this layer of permafrost may lead to an average subsidence of 1.4 m.The results of this study are probably typical of other areas of the Pleistocene Mackenzie delta. There is also general agreement with data obtained from arctic Alaska. |
format |
Article in Journal/Newspaper |
author |
Pollard, W. H. French, H. M. |
author_facet |
Pollard, W. H. French, H. M. |
author_sort |
Pollard, W. H. |
title |
A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
title_short |
A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
title_full |
A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
title_fullStr |
A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
title_full_unstemmed |
A first approximation of the volume of ground ice, Richards Island, Pleistocene Mackenzie delta, Northwest Territories, Canada |
title_sort |
first approximation of the volume of ground ice, richards island, pleistocene mackenzie delta, northwest territories, canada |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/t80-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/t80-059 |
genre |
Arctic Ice Mackenzie Delta Mackenzie Valley Northwest Territories permafrost Richards Island wedge* Alaska |
genre_facet |
Arctic Ice Mackenzie Delta Mackenzie Valley Northwest Territories permafrost Richards Island wedge* Alaska |
op_source |
Canadian Geotechnical Journal volume 17, issue 4, page 509-516 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/t80-059 |
container_title |
Canadian Geotechnical Journal |
container_volume |
17 |
container_issue |
4 |
container_start_page |
509 |
op_container_end_page |
516 |
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1797578359546314752 |