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TitleLandslide inventory and susceptibility mapping for the Yukon Alaska Highway Corridor
AuthorBlais-Stevens, A; Lipovsky, P; Kremer, M; Couture, R; Page, A
SourceProceedings of the Second World Landslide Forum; 2011 p. 777-782, https://doi.org/10.1007/978-3-642-31319-6 30
Year2011
Alt SeriesEarth Sciences Sector, Contribution Series 20110101
PublisherThe Canadian Geotechnical Society
MeetingSecond World Landslide Forum; Rome; IT; October 3-7, 2011
Documentbook
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
AreaMackenzie River; Mackenzie Delta; Norman Wells
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectsfossil fuels; engineering geology; surficial geology/geomorphology; environmental geology; landslides; landslide deposits; mudflows; slope deposits; slope stability; slope stability analyses; slope failures; sediment stability; erosion susceptibility; pipeline feasibility studies; pipelines; hydrocarbons; oil; gas; environmental analysis; environmental studies; environmental impacts
Illustrationslocation maps; flow diagrams
ProgramNorthern Pipelines, Environmental Geoscience
AbstractIn Canada's north, slope stability is a critical issue along infrastructure. In addition to finding slope failures that occur in mountainous regions, there are several types of landslides and ground hazard features that are directly related to the presence of permafrost: active layer detachment slides, retrogressive thaw flows, solifluction, karstic depressions, and rock glaciers.
A landslide inventory and preliminary susceptibility assessment of debris flows and rockfalls/rock slides was carried out for a proposed pipeline route along the Yukon Alaska Highway Corridor (YAHC). The YAHC covers a distance of 950 km by a 40 km width. A total of 1612 landslides were identified, which represents about 1 landslide per 17 km2. Prominent landslide types included debris slides (31%), debris flows and fans (28%), rock slides (11%), solifluction (8%), earth slides/flows (5%), karstic depressions (5%), rockfalls (4%), and combined retrogressive thaw flows and active layer detachments (1%). Rock glaciers were also identified (6%).
The qualitative heuristic debris flow susceptibility map indicates that 69% of the debris flow deposits occur downstream from a high susceptibility zone and 28% from the moderate susceptibility zone. For the qualitative heuristic rockfall/rock slide susceptibility map, 64% fall on the high susceptibility zone and 20% on the moderate susceptibility zone. Thus, as preliminary qualitative landslide susceptibility mapping, this is considered a good correlation between the maps and landslide inventory.
GEOSCAN ID288807