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TitreSeasonal surface displacement derived from InSAR, Yellowknife and surrounding area, Northwest Territories
AuteurShort, N; Stevens, C W; Wolfe, S A
SourceCommission géologique du Canada, Dossier public 7030, 2011, 11 pages; 1 CD-ROM, (Accès ouvert)
Documentdossier public
CartesCette publication contient 1 carte
Info. cartephysiographique, 1/15,000
ProjectionProjection transverse universelle de Mercator (NAD83)
MediaCD-ROM; en ligne; numérique
Formatsrtf; pdf; shp
ProvinceTerritoires du Nord-Ouest
Lat/Long OENS-114.4667 -114.3500 62.4833 62.4250
Sujetstélédétection; déplacement; pergélisol; compaction; levés pédologiques; végétation; transport des sediments; moyens de transport; géophysique; géologie de l'environnement; géologie des dépôts meubles/géomorphologie
Northwest Territories Geoscience Office (Yellowknife)
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
Bibliothèque de Ressources naturelles Canada - Calgary (Sciences de la Terre)
Commission géologique du Canada (Atlantique)
Bibliothèque de Ressources naturelles Canada - Vancouver (Sciences de la Terre)
Bibliothèque de Ressources naturelles Canada - Québec (Sciences de la Terre)
ProgrammeGestionaire de programme - sciences de changements climatiques, Géosciences de changements climatiques
Diffusé2011 12 14
Résumé(disponible en anglais seulement)
Seasonal surface displacement was mapped by the Canada Centre for Remote Sensing and the Geological Survey of Canada for Yellowknife and the surrounding area using satellite interferometric synthetic aperture radar (InSAR). RADARSAT-2 Ultra-fine scenes acquired on May 21, July 8, August 1, August 25 and September 18, 2010, were interferometrically stacked and the total amount of summer vertical displacement was calculated. This open file presents the relative surface displacement in both map and digital ArcGIS form. The calculated values are portrayed in terms of relative displacement that has been classified as stable, low and medium downward displacement and upward displacement. At some locations a significant change in surface characteristics results in a loss of interferometric coherence and no values were calculated. Surface displacement may be from natural and human-induced processes.
This dataset provides spatial context for the variability and relative magnitude of seasonal surface displacement within the Yellowknife area.