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TitleMulti-Polarized Airborne C-SAR Images for Geological Mapping at Lac Volant, Québec
DownloadDownloads (Preprint)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSaint-Jean, R; Singhroy, V; Rheault, M
SourceThirteenth International Conference and WorkshopApplied Geologic Remote SensingERIM, Vancouver, British Columbia, Canada, 1-3 March; 1999., Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20042685
Mediapaper; on-line; digital
File formatpdf
Released1999 01 01
AbstractThis investigation explores the utility of multi-polarized airborne SAR images for geological mapping at the lac Volant site in eastern Québec.

The discovery of the Voisey's Bay massive sulphide deposit triggered a considerable interest in the Canadian mining community. In August 1996, a discovery with similar mineralogical associations was made near Lac Volant, 65 km NE of Sept-Îles, Québec. The Lac Volant showing started an unprecedented exploration rush in the area and geological mapping is now still in progress. Preliminary interpretation of a RADARSAT S6 image led to the acquisition of an airborne quad-polarization C-SAR image for MIR Télédétection Inc.

Our results show that the use of C-HH, C-VH and C-VV, airborne SAR images provide information on the distribution and orientation of lineaments. Analysis of the individual polarimetric images shows that the C-VH image provides a different enhancement of certain directions. The difference can be explained by a depolarization of the signal by vegetation combined to a geometrical effect of the topography.

These results are particularly relevant to RADARSAT-2, currently scheduled for 2001, which will have multiple polarization capability.


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