Research on the Methods for Extraction of Alteration Information by Using ASTER Data: A Case Study of the Chambishi Copper Deposit in Zambia
YU Jian1, DONG Yu-sen1, ZHANG Zhi1, YANG Ri-hong2
1. The Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China;
2. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China
Based on several altered rocks in the Chambishi copper deposit and the spectral characteristics of the rocks existing in VNIR-SWIR bands of ASTER data,the authors adopted the methods of Relative absorption-Band Depth(RBD)and band ratio to enhance the mineral alteration information in this paper. The band ratio of ASTER 2/ASTER 1 and the RBD of ASTER 3 were used to enhance the chalcopyrite and pyrite information,the RBD of ASTER 8 was used to enhance biotite and calcite information,and the RBD of ASTER 6 was used to enhance the sericite information. To improve the existing method of Crosta principal component analysis,the authors applied the combination of the enhanced band ratio and RBD to Crosta method with the purpose of extracting the alteration information of the copper deposit and neighborhood areas in Chambishi. As proved by known copper deposit locations and geological analysis,the methods mentioned above can effectively extract the alteration information and distinguish the main minerals in the study area. The results are reliable,thus supplying references to the extraction of alteration information.
余健, 董玉森, 张志, 杨日红. 基于ASTER影像的蚀变异常提取方法研究——以赞比亚谦比希铜矿床地区为例[J]. 国土资源遥感, 2011, 23(3): 54-60.
YU Jian, DONG Yu-sen, ZHANG Zhi, YANG Ri-hong. Research on the Methods for Extraction of Alteration Information by Using ASTER Data: A Case Study of the Chambishi Copper Deposit in Zambia. REMOTE SENSING FOR LAND & RESOURCES, 2011, 23(3): 54-60.
[5] Rokos D.Argialas D,Mavrantza R,et al.Structural Analysis for Gold Mineralization Using Remote Sensing and Geochemical Techniques in a GIS.Environment:Island of Lesvos,Hellas [J].Natural Resources Research,2000(4):277-293.
[6] Kusky T M,Ramadan T M.Structural Controls on Neoprotero zoic Mineralization in the South Eastern Desert,Egypt:an Integrated Field,Landsat TM and SIR-C/X SAR Approach [J].Journal of African Earth Sciences,2002(1):107-121.
[7] Loughlin W P.Principal Component Analysis for Alteration Mapping. [C]//The Eighth Thematic Conference on Geologic Remote Sensing.Denvor,Cclorado,USA,1991.
[8] Hunt G R.Electromagnetic Radiation:the Communication Link in Remote Sensing [J].Remote Sensing in Geology,1980(2):5-45.
[9] Clark R N.Spectroscopy of Rocks and Minerals and Principles of Spectroscopy [C]//Rencz A N.Remote Sensing for the Earth Science.New York:John Wiley,1999.
[10] Abrams M J,Ashley R P,Goetz A F H,et al.Mapping of Hydrothermal Alteration in the Cuprite Mining Disrtrict,Nevada,Using Aircraft Scanning Images for the Spectral Region 0.46 to 2.36 mm [J].Geology,1977(12):713-718.
[11] Duke E F.Near Infrared Spectra of Muscovite,Tschermak Substitution,and Metamorphic Reaction Process:Implications for Remote Sensing [J].Geology,1994,22:621-624.
[12] Hewson R D,Cudahy T J,Mizuhiko S,et al.Seamless Geological Map Generation Using ASTER in the Broken Hill-Curnamona Province of Australia [J].Remote Sensing of Enviroment,2005,99:159-172.
[13] Hunt G R,Salisbury J W,Lenhoff C J,et al.Visible and Near Infrared Spectra of Minerals and Rocks:V.Halides,Phosphates,Arsenates,Vanadates and Borates [J].Modern Geology,1972(3):121-132.
[14] Rowan L C,Kingston M J,Crowley J K.Spectral Reflectance of Carbonatite and Related Alkalic Igneous Rocks;Selected Samples from Four North American Localities [J].Economic Geology,1986,81:857-871.
[15] Hunt G R.Spectral Signatures of Particulate Minerals in the Visible and Near Infrared [J].Geophysics,1977,42(3):501-513.
[16] Knipling E B.Physical and Physiological Basis for the Reflectance of Visible and Near-infrared Radiation from Vegetation [J].Remote Sensing of Enviroment,1970(3):155-159.
[17] Hunt G R,Salisbury J W.Mid-infrared Spectral Behavior of Igneous Rocks [R].Cambridge,MA:Technical Report AFRCL-TR-75-0356,US Air Force Cambridge Research Laboratory,1974.
[18] Hunt G R,Salisbury J W.Mid-infrared Spectral Behavior of Sedimentary Rocks [R].Cambridge,MA:Technical Report AFRCL-TR-75-0356,US Air Force Cambridge Research Laboratory,1975.
[19] Hunt G R,Salisbury J W.Mid-infrared Spectral Behavior of Metamorphic Rocks [R].Cambridge,MA:Technical Report AFRCL-TR-76-0003,US Air Force Cambridge Research Laboratory,1974.
[20] Lyon R J P.Evaluation of Infrared Spectrophotometery for Compositional Analysis of Lunar and Planetary Soils [R].NASA:Ⅱ.NASA Contract Rep CR-100,1964.
[21] Fujisada H.Design and Performance of ASTER Instrument.Proceedings of SPIE [J].The International Society for Optical Engineering,1995,2583:16-25.
[26] Hunt G R,Salisbury J W.Assessment of Landsat Filters for Rock Type Discrimination Based on Intrinsic Information in Laboratory Spectral [J].Geophysics,1978,43:738-748.
[28] Crosta A P,Moore J Mc M.Enhancement of Landsat Thematic Mapper Imagery for Residual Soil Mapping in SW Minas Gerais State Brazil:a Prospecting Case History in Greenstone Belt Terrain [C]//Calgary.Proceedings of the 9th Thematic Conference on Remote Sensing for Exploration Geology.Ann Arbor,MI:Environmental Research Institute of Michigan,1989:1173-1187.
[29] Rowan L C,Goetz A F H,Ashley R P.Discrimination of Hydrothermally Altered Rocks and Unaltered Rocks in Visible and Near Infrared Multispectral Images [J].Geophysics,1977,42(3):522-535.
[30] Rowan L C,Wetlaufer P H,Goetz A F H,et al.Discrimination of Rock Types and Detection of Hydrothermally Altered Areas in South-central Nevada [J].US Geological Survey Professional Paper,1974,883:1-35.
[31] Crowley J K,Brickey D W,Rowan L C.Airborne Imaging Spectrometer Data of the Ruby Mountains,Montana:Mineral Discrimination Using Relative Absorption Band-depth Images [J].Remote sensing of Environment,1989,29(2):121-134.
2011, Vol. 23 
