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TitleMineral Mapping in the Canadian Arctic Using Hyperspectral Data
AuthorBudkewitsch, P; Staenz, K; Wong, P K; Sangster, D; Rencz, A
SourceThirteenth International Conference on Applied Geologic Remote Sensing, 1-3 March; 1999.
Alt SeriesEarth Sciences Sector, Contribution Series 20042739
AbstractHyperspectral remote sensing plays an increasing role in mineral exploration, particularly in arid and semi-arid regions. In most of these environments, vegetation cover is sparse and, therefore, spectral libraries using pure mineral species have been successfully applied to hyperspecteal data for identification and mapping of mineral abundances. In barren arctic regions, rock surfaces are usually heavily encrusted with lichen of various kinds which change the spectral signature of minerals. Consequently, the magnitude of the effect of lichens on the spectral signature needs to be understood to accurately map the minerals from hyperspectral data.

In order to address these obstacles, several test sites in the Canadian arctic have been investigated with airborne hyperspectral imaging measurements using Probe-1 and ground-based spectral measurements of bedrock and lichen between 400 nm and 2500 nm. One of the objectives is to create a spectral database of rock types and lichen species from the ground measurements which may be used for spectral unmixing of hyperspectral image data. Results from the 1998 field campaign will be presented.


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