Technology Application |
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The Application of ETM Data to the Extraction of Gold Mineralization and Alteration Information: a Case Study of Xiashuangtai Area in Zhangjiakou |
DENG Su-zhen 1, HE Jia-hui 2, WANG Yong-jun 3
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1.Hebei Institute of Geological Survey, Shijiazhuang 050000, China; 2.China University of Geosciences, Wuhan 430074, China; 3.Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002, China |
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Abstract The key point for gold exploration using remote sensing technology is the information extraction of ore-forming structures and spectral characteristics of ferrite oxides and altered hydrous minerals. On the basis of the remote sensing image processing software (ENVI 4.0) and by using a new quick, exact and effective method for extraction of gold mineralization and alteration information,namely "multivariate data analysis+ratio+PCA+DS+classification",the spectral characteristics of altered minerals can be extracted,and the influence of the vegetation can be suppressed. It is demonstrated that the gold mineralization and alteration information is in accordance with the known mine spot,and the method is very feasible.
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Keywords
Satellite remote sensing
Multi-spectral imagery
3D humidity field
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Issue Date: 02 August 2011
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