Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988
Rain-induced landslides are a major geological hazard in the Canadian Cordillera that impact directly on the economic infrastructure of the region. In July 1988, heavy rains triggered debris flows and related sediment-water flow processes which severed the Alaska Highway in three areas: Muncho Lake,...
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ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/3623 2023-05-15T17:08:01+02:00 Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 Evans, S. G. Clague, J. J. 1989-09-09 application/pdf https://journals.lib.unb.ca/index.php/GC/article/view/3623 eng eng Geological Association of Canada https://journals.lib.unb.ca/index.php/GC/article/view/3623/4137 https://journals.lib.unb.ca/index.php/GC/article/view/3623 Copyright (c) 2015 Geoscience Canada Geoscience Canada; Volume 16, Number 3 (1989) 1911-4850 0315-0941 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion other 1989 ftuninewbrunojs 2022-07-11T11:47:40Z Rain-induced landslides are a major geological hazard in the Canadian Cordillera that impact directly on the economic infrastructure of the region. In July 1988, heavy rains triggered debris flows and related sediment-water flow processes which severed the Alaska Highway in three areas: Muncho Lake, BC, Rancheria, Yukon, and Kluane Lake, Yukon. The events paralysed travel in the region for several days. In addition, the heavy rainfall caused wide spread landsliding over a large area of the northern Cordillera. One of the largest events was a complex failure at Nahanni Butte, NWT. Debris flows originating in the steep watersheds of the Sentinel Range of the Rocky Mountains severed the highway at six locations in the vicinity of Muncho Lake. At Kluane Lake, the highway was severed in numerous places by debris flows and related processes and at one location, near the Slims River, a debris flow covered over 500 m of highway. A large landslide, covering nearly 2 km2, threatened a National Park ranger station near Nahanni Butte. North-east of the station a large mobile mudflow travelled almost 2 km to the Liard River. The direct cost of restoring the Alaska Highway was in the order of $1.8 M. The paper points to the vulnerability of transportation facilities in mountainous terrain where the location of routes necessarily involves the traversing of active geomorphic surfaces. Article in Journal/Newspaper Liard River Nahanni Butte Alaska Yukon University of New Brunswick: Centre for Digital Scholarship Journals Yukon The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Liard ENVELOPE(-67.417,-67.417,-66.850,-66.850) Kluane Lake ENVELOPE(-138.773,-138.773,61.261,61.261) Slims River ENVELOPE(-138.537,-138.537,60.995,60.995) Rancheria ENVELOPE(-130.606,-130.606,60.087,60.087) Sentinel Range ENVELOPE(-85.500,-85.500,-78.167,-78.167) Nahanni Butte ENVELOPE(-123.384,-123.384,61.000,61.000) Muncho Lake ENVELOPE(-125.770,-125.770,58.933,58.933) |
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Open Polar |
collection |
University of New Brunswick: Centre for Digital Scholarship Journals |
op_collection_id |
ftuninewbrunojs |
language |
English |
description |
Rain-induced landslides are a major geological hazard in the Canadian Cordillera that impact directly on the economic infrastructure of the region. In July 1988, heavy rains triggered debris flows and related sediment-water flow processes which severed the Alaska Highway in three areas: Muncho Lake, BC, Rancheria, Yukon, and Kluane Lake, Yukon. The events paralysed travel in the region for several days. In addition, the heavy rainfall caused wide spread landsliding over a large area of the northern Cordillera. One of the largest events was a complex failure at Nahanni Butte, NWT. Debris flows originating in the steep watersheds of the Sentinel Range of the Rocky Mountains severed the highway at six locations in the vicinity of Muncho Lake. At Kluane Lake, the highway was severed in numerous places by debris flows and related processes and at one location, near the Slims River, a debris flow covered over 500 m of highway. A large landslide, covering nearly 2 km2, threatened a National Park ranger station near Nahanni Butte. North-east of the station a large mobile mudflow travelled almost 2 km to the Liard River. The direct cost of restoring the Alaska Highway was in the order of $1.8 M. The paper points to the vulnerability of transportation facilities in mountainous terrain where the location of routes necessarily involves the traversing of active geomorphic surfaces. |
format |
Article in Journal/Newspaper |
author |
Evans, S. G. Clague, J. J. |
spellingShingle |
Evans, S. G. Clague, J. J. Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
author_facet |
Evans, S. G. Clague, J. J. |
author_sort |
Evans, S. G. |
title |
Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
title_short |
Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
title_full |
Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
title_fullStr |
Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
title_full_unstemmed |
Active Earth: Rain-induced Landslides in the Canadian Cordillera, July 1988 |
title_sort |
active earth: rain-induced landslides in the canadian cordillera, july 1988 |
publisher |
Geological Association of Canada |
publishDate |
1989 |
url |
https://journals.lib.unb.ca/index.php/GC/article/view/3623 |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) ENVELOPE(-67.417,-67.417,-66.850,-66.850) ENVELOPE(-138.773,-138.773,61.261,61.261) ENVELOPE(-138.537,-138.537,60.995,60.995) ENVELOPE(-130.606,-130.606,60.087,60.087) ENVELOPE(-85.500,-85.500,-78.167,-78.167) ENVELOPE(-123.384,-123.384,61.000,61.000) ENVELOPE(-125.770,-125.770,58.933,58.933) |
geographic |
Yukon The Sentinel Liard Kluane Lake Slims River Rancheria Sentinel Range Nahanni Butte Muncho Lake |
geographic_facet |
Yukon The Sentinel Liard Kluane Lake Slims River Rancheria Sentinel Range Nahanni Butte Muncho Lake |
genre |
Liard River Nahanni Butte Alaska Yukon |
genre_facet |
Liard River Nahanni Butte Alaska Yukon |
op_source |
Geoscience Canada; Volume 16, Number 3 (1989) 1911-4850 0315-0941 |
op_relation |
https://journals.lib.unb.ca/index.php/GC/article/view/3623/4137 https://journals.lib.unb.ca/index.php/GC/article/view/3623 |
op_rights |
Copyright (c) 2015 Geoscience Canada |
_version_ |
1766063569617551360 |