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TitleApplication of airborne C-SAR and SPOT image data to the geological setting of the Nahanni earthquake area
AuthorMoon, W M; Won, J S; Li, B; Slaney, V R; Lamontagne, MORCID logo
SourceCanadian Journal of Remote Sensing vol. 17, no. 3, 1991 p. 272-278,
Alt SeriesGeological Survey of Canada, Contribution Series 2000133
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS95F/09; 95F/10; 95F/15; 95F/16; 95G/11; 95G/12; 95G/13; 95G/14; 95J/03; 95J/04; 95J/05; 95J/06; 95K/01; 95K/02; 95K/07; 95K/08
AreaNorth Nahanni River; Mackenzie River; Boom Creek; Mackenzie Plain; Inverson Range; Franklin Mountains
Lat/Long WENS-125.0000 -123.0000 62.5000 61.5000
Subjectsgeophysics; tectonics; earthquake studies; remote sensing; LANDSAT imagery; radar imagery; satellite imagery; terrain analysis; structural interpretations; Recent; tectonic elements; tectonic zones; tectonic environments; Foreland Fold Belt; Iverson Thrust Fault; Battlement Thrust Fault; English Chief Anticline; Mackenzie Plain; Quaternary
Illustrationssketch maps; Landsat images; SPOT images; images
Released1991 01 01
AbstractRecent large earthquakes near the North Nabanni River in the northeast Cordillera, Northwest Territories, have received considerable attention from earth scientists. In this study, Landsat (MSS), SPOT satellite images, and airborne C-band SAR (Synthetic Aperture Radar) images were processed, integrated, and interpreted for regional tectonic features, including surface geological and topographical characteristics. The SPOT image clearly shows the 1985 landslides caused the two large earthquakes (Oct. 5, 1985, and Dec. 23, 1985). The final C-SAR /SPOT image overlaid with main shock and after-shock epicentre information reveals a new North-South trending tectonic feature that meets the Iverson thrust fault at the southernmost portion of Boom Creek. This coincides with the southern end of the main and after-shock epicentre cluster in the area. There also appears to be an East-West trending structure that follows the North Nahanni River west of the Iverson Range. This feature extends eastward outside the C-SAR/SPOT composite image area and appears to continue in an east-southeastern implications and need to be investigated further.

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