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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Using ASTER remote sensing data set for geological mapping, in Namibia
Physics and Chemistry of the Earth, Volume 30, No. 1-3 SPEC. ISS., Year 2005
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Description
The present study deals with the estimation of the advanced spaceborne thermal emission and reflection radiometer (ASTER) data for geological application. Visible, near-infrared and short wave infrared reflectance data (9 ASTER bands) have been processed and interpreted in framework of a mapping project concerning the western margin of the Kalahari desert. A methodology has been applied to apparent reflectance images corrected to illumination effects. A Principal Component Analysis (PCA) has been realised on the 9 ASTER bands in order to reduce the redundancy information in highly correlated bands. PCA results enable the validation and the revision of the lithological boundaries defined on previous geological map and provide information for characterising new lithological units corresponding to surficial formations previously unrecognised. A supervised classification realised from PCA results and based on the geological map shows that lithological units may have similar spectral signature, a strong spectral variability or a spectral homogeneity. The processing of ASTER remote sensing data set can thus be used as a powerful tool for geological mapping. © 2004 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Gomez, Cécile
France, Villeurbanne
Université Claude Bernard Lyon 1
Delacourt, Christophe
France, Villeurbanne
Université Claude Bernard Lyon 1
Allemand, Pascal
France, Villeurbanne
Université Claude Bernard Lyon 1
Ledru, Patrick
France, Orleans
Bureau de Recherche Géologique et Minière
Wackerle, Rainer
Namibia, Windhoek
Geological Survey of Namibia
Statistics
Citations: 123
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.pce.2004.08.042
ISSN:
14747065
Research Areas
Environmental
Study Locations
Namibia