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TitleDelineation of lakes and channels in the Mackenzie Delta, NWT, using airborne LiDAR
AuthorCrasto, N; Hopkinson, C; Marsh, P; Forbes, D L; Spooner, I
SourceProceedings of Remote Sensing and Hydrology; International Association of Hydrological Sciences, Publication 352, 2012 p. 359-362
LinksOnline - En ligne
Year2012
Alt SeriesEarth Sciences Sector, Contribution Series 20120055
MeetingRemote Sensing and Hydrology Symposium; Jackson Hole, Wyoming; US; September 2010
Documentserial
Lang.English
Mediapaper; on-line; digital; paper
File formatpdf
ProvinceNorthwest Territories
NTS107B/07
AreaInuvik; Mackenzie River
Lat/Long WENS-134.0833 -134.0000 68.3333 68.2500
Subjectshydrology; river channel delineation; water masks; remote sensing; LiDAR; digital terrain analysis
ProgramProgram Management - Climate Change Science, Climate Change Geoscience
AbstractA terrain-based method using locally adaptive thresholds that adjust to slope and orientation of banks was tested to delineate lake and channel banks in the Mackenzie Delta, NWT, Canada. Results will contribute to an improved understanding of the local hydrology, the development of a hydraulic model and studies on subsidence impacts of planned natural gas extraction projects in the area. In addition to prevalent terrain-based methods that use point elevations alone, an approach based on using a water mask was tested. Water masks can improve the accuracy of terrain-based bank delineation by: (a) suppressing the effect of low signal-to-noise areas; and (b) prioritizing regions around existing water bodies that are most likely to contain sill points.
GEOSCAN ID291424