| Title | Surface velocities of glaciers in western Canada from speckle-tracking of ALOS PALSAR and RADARSAT-2 data |
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| Author | Van Wychen, W; Copland, L; Jiskoot, H; Gray, L; Sharp, M; Burgess, D |
| Source | Canadian Journal of Remote Sensing vol. 44, no. 1, 2018 p. 57-66, https://doi.org/10.1080/07038992.2018.1433529 |
| Image |  |
| Year | 2018 |
| Alt Series | Natural Resources Canada, Contribution Series 20180116 |
| Publisher | Informa UK Limited |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf; html |
| Province | British Columbia; Alberta |
| NTS | 83C/03; 83C/04; 83C/05; 83C/06; 92K; 92M; 92N; 104B; 104C; 104D; 104E; 104F; 104G; 104J; 104K; 104L; 104M; 104N; 105D; 114; 115A; 115B; 115C; 115F; 115G |
| Area | St. Elias Mountains; Boundary Ranges; Coast Mountains; Alaska; Hubbard Glacier; Seward Glacier; Tweedsmuir Glacier; Lowell Glacier; Rocky Mountains; Columbia Mountains; Chaba Icefields; Clemenceau
Icefields; Columbia Icefields; Canada; United States of America |
| Lat/Long WENS | -145.0000 -130.0000 62.0000 56.0000 |
| Lat/Long WENS | -128.0000 -124.0000 52.0000 50.5000 |
| Lat/Long WENS | -118.0000 -117.0000 52.5000 52.0000 |
| Subjects | surficial geology/geomorphology; environmental geology; Nature and Environment; glaciers; icefields; remote sensing; satellite imagery; radar methods; ice movement; ice flow; mapping techniques;
climate; change detection; Climate change |
| Illustrations | location maps; tables; geoscientific sketch maps |
| Program | GSC Atlantic Division |
| Released | 2018 04 19 |
| Abstract | Speckle-tracking of historically acquired ALOS PALSAR and RADARSAT-2 datasets are used to determine the dynamics of major glaciers and ice masses in western Canada over the past decade. For the
icefields of the St. Elias Mountains and those that fringe the northern British Columbia/Alaska border, our results are largely consistent with earlier studies that used the same data, but different speckle-tracking techniques, to derive ice motion.
However, our results are generally more spatially comprehensive than those previously published, in particular in fast-flowing regions such as Hubbard, Seward, Tweedsmuir and Lowell glaciers. We also produce new velocity maps for the icefields
located in the Coast Mountains of southwestern British Columbia and for the Chaba, Clemenceau and Columbia icefields of the Rocky Mountains. Generally, faster flow is present on large ocean- and land-terminating outlet glaciers, particularly those in
high accumulation maritime regions. These results, taken together with velocity maps of the Canadian Arctic and Yukon produced in previous studies, mean that baseline maps of glacier velocities determined from speckle tracking of SAR datasets are now
available for nearly all the major ice masses of Canada. |
| Summary | (Plain Language Summary, not published)
The dynamics of alpine glaciers in western Canada can have a significant impact on their mass balance through transport of mass from high elevation
accumulation zones to low elevation ablation zones. Knowledge of the regional scale velocity structure of these features however remains poorly understood. This paper derives original baseline velocity measurements for glaciers and icefields to
improve current and predicted mass loss rates from this region. |
| GEOSCAN ID | 308360 |
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