| Title | Using airborne lidar to assess the influence of glacier downwasting on water resources in the Canadian Rocky Mountains |
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| Author | Hopkinson, C; Demuth, M N |
| Source | Selectd papers from the 26th Canadian Symposium on Remote Sensing: Managing resources and monitoring the environment/Documents choisis du 26e Symposium canadien de télédétection : La gestion des
ressources et le suivi de l'environnement; by Hopkinson, C (ed.); White, H P (ed.); Canadian Journal of Remote Sensing vol. 32, no. 2, 2006 p. 212-222, https://doi.org/10.5589/m06-012  Open Access |
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| Year | 2006 |
| Alt Series | Earth Sciences Sector, Contribution Series 20060494 |
| Publisher | Informa UK Limited |
| Meeting | 26th Canadian Symposium on Remote Sensing: Managing resources and monitoring the environment / 26e Symposium canadien de télédétection : La gestion des ressources et le suivi de l'environnement;
Wolfville; CA; June 14-16, 2005 |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Alberta |
| NTS | 82N/10 |
| Area | Peyto Glacier; Canadian Rocky Mountains; Mistaya River Basin |
| Lat/Long WENS | -116.5833 -116.5167 51.7000 51.6333 |
| Subjects | hydrogeology; surficial geology/geomorphology; Nature and Environment; glaciers; watersheds; resource management; resource estimation; remote sensing; climate; digital terrain modelling; glacial
features; moraines; periglacial features; ice conditions; hydrologic environment; mapping techniques; Climate change; Water supply; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | sketch maps; satellite images; photographs; tables; plots; digital elevation models; lidar images |
| Program | Government of Canada Action Plan
2000 on Climate Change |
| Released | 2014 06 02 |
| Abstract | Knowledge of the changing dimensions of alpine glacier surfaces is critical from both a water resources and climate change indication perspective. With the development of airborne light detection and
ranging (lidar) technologies with the capability to rapidly map large areas of topography at high resolutions, there is a need to assess the utility of this technology for glacier surface change detection and water resources assessment. The study
presented here compares two lidar digital elevation models (DEMs) collected 23 months apart in 2000 and 2002 over Peyto Glacier, Canadian Rocky Mountains, for the purposes of intensity image feature recognition and surface downwasting assessment. The
2002 DEM was subtracted from the 2000 DEM to quantify the total and spatial variability in surface downwasting (or growth) within the glacial and periglacial environments. It was found that there was a reduction in volume totaling 33 × 106 m3 over
the Peyto Glacier surface and surrounding ice-cored moraines. This downwasting was estimated to be equivalent to approximately 22 × 106 m3 of water volume and, after extrapolation, 16% of total basin runoff. The water-equivalent contribution from
ice-cored moraines was estimated to be 6% of the total glacier runoff contribution, highlighting the importance of monitoring this component of glacial melt. |
| GEOSCAN ID | 223123 |
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