Application study of multi-spectral ASTER data for determination of ETM remote sensing anomaly property: Taking Wulonggou region of eastern KunLun mountain range as example
应用多光谱ASTER数据对ETM遥感异常的定性判别研究——以东昆仑五龙沟为例

The geological basis and the spectral presupposition for the alteration anomalies, as the new parameter for the prediction of the mineral resources, are discussed. On the basis of deposit geology and spectral characteristics of altered minerals a table for extraction of remote sensing anomaly and geological interpretation was constructed. The multi-spectral remote sensing techniques for extraction of ETM (Enhanced Thematic Mapper) anomalies were already popularized for the whole country. The ASTER (Advanced Space-borne Thermal Emission and Reflection radiometer) data can play important auxiliary role for ETM data in 3 aspects: 1. for determination of the mineralization types for several types of deposits, using the added new SWIR channels; 2. for determination of several rock types, using the added TIR channels; 3. for resolving several problems with ETM RS anomaly due to the big width of the 7th channel. This work shows the study results of ASTER data for Wulonggou region of eastern Kunlun mountain range in solving of the problems with determination of the property of the ETM RS anomaly.