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TitreEssai de cartographie du pergélisol discontinu à l'aide d'un SIG: détroit de Manitounuk, Québec nordique, Canada
AuteurMenard, E; Allard, M; Michaud, Y
SourcePermafrost and Periglacial Processes vol. 8, 1997 p. 237-244, https://doi.org/10.1002/(sici)1099-1530(199732)8:2<237::aid-ppp249>3.0.co;2-d
Année1997
Séries alt.Commission géologique du Canada, Contributions aux publications extérieures 1996147
ÉditeurWiley-Blackwell
Documentpublication en série
Lang.français
DOIhttps://doi.org/10.1002/(sici)1099-1530(199732)8:2<237::aid-ppp249>3.0.co;2-d
Mediapapier; en ligne; numérique
Formatspdf
ProvinceQuébec
SNRC33N/06NW; 33N/11
Lat/Long OENS -77.5000 -77.0000 55.7500 55.3333
Sujetspergélisol; argiles; silts; tills; drumlins; végétation; techniques de cartographie; cartographie par ordinateur; techniques de cartographie; applications de système d'information géographique; géologie des dépôts meubles/géomorphologie; géomathématique; Quaternaire
Illustrationstables; histograms
Diffusé2001 01 01
RésuméTwo variables (surficial deposits, vegetation assemblages) were entered numerically into a GIS which allowed the production of a permafrost regional map. A second permafrost map produced by air photo interpretation and precise field work were compared with the GIS-produced map. The two maps are similar at 92%. In the test region, surficial deposits stand out as the most significant control factor of permafrost distribution: permafrost areas appear almost exclusively in the clayey silts of the Tyrrell Sea and in the ®ne matrix till under several bare drumlin ridges. Vegetation cover, which controls snow depth, comes out as the second variable that allows detailed mapping of permafrost within the fine sediment areas.
GEOSCAN ID207718