Mineral Alteration Information Extraction Based on SREM Fusion Data
Wang Guizhen
Zhang Lifu
Sun Xuejian
Yang Hang
Jiang Hailing
Tong Qingxi
Abstract：The current satellite hyperspectral data with narrow swath has been restricted in the use of large area mineral map-ping.The spectral resolution enhancement method (SREM)which restructures a large width hyperspectral data with Hyperion (narrow swath hyperspectal data)and advanced spaceborne thermal emission and reflection radiometer (ASTER)(wide swath multi-spectral data)is discussed in the paper.The results show that:(1)only three kinds of minerals (Al-OH,Mg-OH and Fe3 + )are detected in ASTER data,while five kinds of minerals (kaolinite,illite,chlorite,sericite and jarosite)are identified in fusion hyperspectral data;(2)compared with the minerals of fusion data with ASTER and Hyperion data,the overall accu-racy is respectively 90.56% and 92.85%;(3)sericite,illite and kaolinite appear at the region of Al-OH,jarosite shows up at the area of Fe3 + and chlorite shows up at Mg-OH region.The SREM fusion data with high spectral resolution can improve the mineral alteration extraction accuracy which makes a good example for large area mineral mapping.
Keywords：SREM fusion dataalteration information extractionporphyry coppermixture tuned matched fliterremote sensing
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 1330-1338 )