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TitreLandslide inventory and susceptibility mapping for the Yukon Alaska Highway Corridor
AuteurBlais-Stevens, A; Lipovsky, P; Kremer, M; Couture, R; Page, A
SourceProceedings of the Second World Landslide Forum; 2011 p. 777-782
Année2011
Séries alt.Secteur des sciences de la Terre, Contribution externe 20110101
ÉditeurThe Canadian Geotechnical Society
RéunionSecond World Landslide Forum; Rome; IT; Octobre 3-7, 2011
Documentlivre
Lang.anglais
Mediapapier; en ligne; numérique
Formatspdf
ProvinceColombie-Britannique; Alberta; Saskatchewan; Manitoba; Ontario; Québec; Nouveau-Brunswick; Nouvelle-Écosse; Île-du-Prince-Édouard; Terre-Neuve-et-Labrador; Territoires du Nord-Ouest; Yukon; Nunavut
SNRC1; 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
Lat/Long OENS-141.0000 -50.0000 90.0000 41.7500
Sujetsglissements de terrain; dépôts de glissement de terrain; coulées boueuses; dépôts de pentes; stabilité des pentes; analyses de la stabilité des pentes; glissements de pentes; stabilité du sédiment; tendance à l'érosion; études de faisabilité du pipeline; pipelines; hydrocarbures; pétrole; gaz; analyse environnementales; etudes de l'environnement; effets sur l'environnement; combustibles fossiles; géologie de l'ingénieur; géologie des dépôts meubles/géomorphologie; géologie de l'environnement
Illustrationslocation maps; flow diagrams
Programmepipeline nordiques, Géoscience de l'environnement
Résumé(disponible en anglais seulement)
In 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