Mapping Lunar Olivine Using Clementine Spectral Indices and Chemical Composition Parameters  

作　　者：YUE Zongyu XIE Hongjie DI Kaichang OUYANG Ziyuan 

机构地区：[1]The State Key Laboratory of Remote Sensing Science,Institute of Remote SensingApplications,Chinese Academy of Sciences,Beijing 100101,China [2]Department of Geological Sciences,the University of Texas at San Antonio,San Antonio,TX,78249,USA [3]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China

出　　处：《Acta Geologica Sinica(English Edition)》2012年第1期65-72,共8页地质学报（英文版）

基　　金：supported by the National High Technology Research and Development Program(No.2010AA12220101 and 2009AA12Z310);National Natural Science Foundation of China(No.40871202 and 41002120)

摘　　要：Olivine exposures at the central peak of Copernicus crater of the Earth＇s Moon have been confirmed by telescope observations and Clementine spectra data. Using these exposures as training sites, this study used a method of combining two spectral indices （950 nm/750 nm and 2000 nm/1500 nm）, one maturity index （Is/FeO）, and four chemical content indices （FeO, Mg, Al, Ca）, through a decision tree classifier, to map olivine-rich units on the west lunar surface based on mosaicked Clementine image （500 m pixel size）. Most classified olivine exposures are found inside craters or on their rays, suggesting that olivine exposures are directly associated with the impact processes. The results have been validated in several selected sites, though further validations with data from the newest missions are strongly needed.Olivine exposures at the central peak of Copernicus crater of the Earth＇s Moon have been confirmed by telescope observations and Clementine spectra data. Using these exposures as training sites, this study used a method of combining two spectral indices （950 nm/750 nm and 2000 nm/1500 nm）, one maturity index （Is/FeO）, and four chemical content indices （FeO, Mg, Al, Ca）, through a decision tree classifier, to map olivine-rich units on the west lunar surface based on mosaicked Clementine image （500 m pixel size）. Most classified olivine exposures are found inside craters or on their rays, suggesting that olivine exposures are directly associated with the impact processes. The results have been validated in several selected sites, though further validations with data from the newest missions are strongly needed.

关 键 词：CLEMENTINE OLIVINE Copernicus crater 

分 类 号：P184.5[天文地球—天文学] TP75[自动化与计算机技术—检测技术与自动化装置]