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TitleUsing airborne lidar to assess the influence of glacier downwasting on water resources in the Canadian Rocky Mountains
AuthorHopkinson, C; Demuth, M N
SourceSelectd 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)
Year2006
Alt SeriesEarth Sciences Sector, Contribution Series 20060494
PublisherInforma UK Limited
Meeting26th 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
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceAlberta
NTS82N/10
AreaPeyto Glacier; Canadian Rocky Mountains; Mistaya River Basin
Lat/Long WENS-116.5833 -116.5167 51.7000 51.6333
Subjectshydrogeology; 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; glacier downwasting; lidar; climate change; water supply; digital elevation models; ice cores; Water resources; Phanerozoic; Cenozoic; Quaternary
Illustrationssketch maps; satellite images; photographs; tables; plots; digital elevation models; lidar images
ProgramGovernment of Canada Action Plan 2000 on Climate Change
Released2014 06 02
AbstractKnowledge 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 ID223123