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TitreDigital elevation model of the Mackenzie River valley, Northwest Territories
TéléchargerTéléchargements
LicenceVeuillez noter que la Licence du gouvernement ouvert - Canada remplace toutes les licences antérieures.
AuteurDuchesne, C; Ednie, M; Wright, J F
SourceCommission géologique du Canada, Dossier public 5337, 2007, 14 pages; 1 DVD, https://doi.org/10.4095/223610 (Accès ouvert)
LiensMetadata - Métadonnées 1
LiensMetadata - Métadonnées 2
LiensMetadata - Métadonnées 3
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LiensMetadata - Métadonnées 5
Année2007
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/223610
MediaDVD; numérique; en ligne
Liensreadme / lisez-moi
Formatsadf (ArcGIS® with/avec Spatial Analyst extension, ArcView® v.3.0 + with/avec Spatial Analyst extension); htm; pdf (Adobe® Acrobat® Reader®); txt; xml
ProvinceTerritoires du Nord-Ouest
SNRC85D; 95A; 95B; 95G; 95H; 95I; 95J; 95N; 95O; 96C; 96D; 96E; 96F; 96L/05; 96L/06; 106G; 106H; 106I; 106J; 106K; 106L/09; 106L/16; 106M; 106N; 106O; 106P; 107A; 107B; 107C; 107D; 107E; 116P/01; 116P/08; 116P/09; 116P/16; 117A/01; 117A/08; 117A/09; 117A/16; 117D/01
Lat/Long OENS-137.0000 -118.0000 71.0000 60.0000
Sujetsmodélisation numérique de terrain; topographie; analyses statistiques; distributions de fréquences; système d'information géographique; géomathématique; géologie générale
Illustrationsdigital elevation models; sketch maps; plots; frequency distribution diagrams
ProgrammeLe Programme de recherche et de développement énergétiques (PRDE)
Diffusé2007 04 01
Résumé(disponible en anglais seulement)
The data represent a digital elevation model (DEM) of the Mackenzie River valley, Northwest Territories, which spans from the Alberta border to the Beaufort Sea (10° of latitude). Contour lines from 1:50 000 digital map sheets (source: <>) for the Mackenzie River valley were edge matched. A line file representing the coastline was also extracted from the waterbodies element of the NTDB and was merged with the contour lines and assigned an elevation of 0 metres. These contour lines were used to generate the DEM. To make the resulting DEM file sizes manageable, the study area is divided in 5 sections. Because of memory limitations, to generate the DEM, each section was subdivided in 5 or 6 parcels. A 30 km buffer around the parcel's boundary was assigned while generating the DEMs with the ANUDEM algorithm in ArcINFO workstation. All contour lines inside the 30 km buffer were used and a minimum Z value of 0 metres was enforced. The resulting DEMs were trimmed by 9 km, then the parcels were mosaicked using a mean. A final step cropped the resulting section to its appropriate neatline (with a 150 m buffer on adjacent sections). Hillshade grids were generated for each section with values of 315º for azimuth, 45º for altitude and 1 for vertical exaggeration (z). The hillshades were used to visually check the quality of the DEM; local filtering was applied where needed. The final DEM sections are named from north to south: mcdem30a, mcdem30b, mcdem30c, mcdem30d, and mcdem30e. Their respective hillshades are named with the "hs" prefix: mcdem30a hs, mcdem30b hs, mcdem30c hs, mcdem30d hs, mcdem30e hs.
GEOSCAN ID223610