| Title | Contemporary glacier area changes in the Ragged Range, Northwest Territories, including Nahanni National Park Reserve of Canada |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Ednie, M; Demuth, M N |
| Source | Geological Survey of Canada, Open File 8401, 2018, 22 pages, https://doi.org/10.4095/311351  Open Access |
| Image |  |
| Year | 2018 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf (Adobe® Reader®) |
| Province | Northwest Territories |
| NTS | 95E/13; 95E/14; 95L/03; 95L/04; 95L/05; 95L/06; 105H/16; 105I/01; 105I/08 |
| Area | Ragged Range; Nahanni National Park Reserve; South Nahanni River; Dehcho; Sahtu Settlement; Tungsten |
| Lat/Long WENS | -128.3333 -127.3333 62.3333 61.8333 |
| Subjects | hydrogeology; surficial geology/geomorphology; environmental geology; geophysics; Nature and Environment; 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; Climate change; monitoring; Trends |
| Illustrations | photographs; block diagrams; satellite images; location maps; geoscientific sketch maps; tables; plots; frequency distribution diagrams |
| Program | GSC Atlantic Division |
| Released | 2018 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 ID | 311351 |
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