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TitleSecular change in the glacier cover contributing flow to a World Heritage River - initial findings from work in the Ragged Ranges and headwaters of the South Nahanni River, N.W.T.
AuthorDemuth, M; McCarthy, D; Zdanowicz, C; Pinard, V; Robertson, L; Murray, D; Cato, S
SourceAir, Ocean, Earth and Ice on the Rock": Canadian Meteorological and Oceanographical Society, Canadian Geophysical Union and American Meteorological Society joint congress, Program with abstracts; 2007 p. H06-2DP .2.
Year2007
Alt SeriesEarth Sciences Sector, Contribution Series 20080610
MeetingAir, Ocean, Earth and Ice on the Rock": Canadian Meteorological and Oceanographical Society, Canadian Geophysical Union and American Meteorological Society joint congress; St-John's; CA; May 28 - June 1, 2007
Documentbook
Lang.English
Mediapaper
ProvinceNorthwest Territories
NTS95E; 95F; 95L; 105I; 105O; 105P
AreaSouth Nahanni River; Ragged Ranges; Logan Mountain; Selwyn Mountain; Flat River
Lat/Long WENS-132.0000 -124.0000 64.0000 61.0000
Subjectssurficial geology/geomorphology; glaciers; glacial deposits; fluvial studies; fluvial processes; fluvial systems; fluvial transport; ecosystems; vegetation
AbstractThe South Nahanni River headwaters contain the largest assemblage of glaciers in the Northwest Territory - glaciers that remain hereto unstudied. The majority of these are located in the Ragged Ranges of the Logan and Selwyn Mountains. River flow from these headwaters plays an important but yet to be comprehensively defined role in the functioning of eco-systems related to the South Nahanni River and its tributary, the Flat River. Using recent and historical remote sensing imagery, space-based geodesy and information from geobotanical assays conducted in the glacier foreland, we provide a rudimentary description of the recent and past-century contraction of some notable glaciers in this region. We describe ongoing work towards a better understand the variability of glacier cover, snowpack and related river flows for a region that serves as a northward and eastward extension of perspectives on surface energy balance and hydrological inputs provided by several observing sites in operation in the Rocky Mountains, Interior Ranges and Coast Mountains.
GEOSCAN ID226295