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TitleContemporary glacier area changes in the Ragged Range, Northwest Territories, including Nahanni National Park Reserve of Canada
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AuthorEdnie, M; Demuth, M N
SourceGeological Survey of Canada, Open File 8401, 2018, 22 pages, https://doi.org/10.4095/311351
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf (Adobe® Reader®)
ProvinceNorthwest Territories
NTS95E/13; 95E/14; 95L/03; 95L/04; 95L/05; 95L/06; 105H/16; 105I/01; 105I/08
AreaRagged Range; Nahanni National Park Reserve; South Nahanni River; Dehcho; Sahtu Settlement; Tungsten
Lat/Long WENS-128.3333 -127.3333 62.3333 61.8333
Subjectshydrogeology; surficial geology/geomorphology; environmental geology; geophysics; glaciology; glaciers; morphometry; remote sensing; satellite imagery; glacier surveys; climate; drainage systems; basins; ecosystems; Reference Glacier-Climate Observing System; United Nations Framework Convention on Climate Change; Bologan-Brintnell Icefield; Bologna Glacier; Brintnell Glacier; surface area changes; glacier fragmentation; climate change; monitoring; Landsat 8; glacier inventories; error analysis; Fractional Area Change (FAC); trends
Illustrationsphotographs; block diagrams; satellite images; location maps; geoscientific sketch maps; tables; plots; frequency distribution diagrams
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramGlacier Mass Balance Project, GSC Atlantic Division
Released2018 10 26
Abstract(Summary)
Geological Survey of Canada Open File 8401 presents an analysis of recently documented glacier area changes for the Ragged Range, Northwest Territory, including the glaciers of Nahanni National Park Reserve of Canada. Utilizing uniform methods from a previous analysis - 1982-2008 - glacier morphometry was updated with 2017 satellite imagery. Analysis reveals that currently there are 345 individual glaciers in the Ragged Range region covering a total area of 204.5 km2. Between 2008 and 2017, the overall surface area decreased by ~34 km2 while the population increased by 4 glaciers. The increase in the number of glaciers during the last 8 years is attributed to fragmentation of larger glaciers into multiple smaller glaciers. It has also been determined that the rate of total area contraction has increased - from -2.9 km2 a(-1) during 1982-2008 to -3.8 km2 a(-1) during 2008-2017.
Summary(Plain Language Summary, not published)
This open file presents an analysis of recently documented glacier area changes for the Ragged Range, Northwest Territory, including the glaciers of Nahanni National Park Reserve of Canada. Utilizing uniform methods from a previous analysis glacier morphometry was updated with 2017 satellite imagery. Analysis reveals that currently there are 345 individual glaciers in the Ragged Range region covering a total area of 204.5 km2. Between 2008 and 2017, the overall surface area decreased by ~34 km2 while the population increased by 4 glaciers. The increase in the number of glaciers during the last 8 years is attributed to fragmentation of larger glaciers into multiple new smaller glaciers. It has also been determined that the rate of total area contraction has increased - from -2.9 km2 a-1 during 1982-2008 to -3.8 km2 a-1 during 2008-2017.
GEOSCAN ID311351