多光谱遥感的盐类预测模型在莎车盆地找钾中的应用  

Application of multispectral remote sensing potash prognostic model to potassium prospecting work in Yarkend Basin,Xinjiang

作　　者：姚佛军[1,2] 刘成林[1] 焦鹏程[1] 曹养同[1] 张华[1] 

机构地区：[1]中国地质科学院矿产资源研究所国土资源部成矿作用和资源评价重点实验室,北京100037 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《矿床地质》2014年第5期1091-1100,共10页Mineral Deposits

基　　金：国家重点发展研究计划项目(973计划)(编号:2011CB403007);自然科学基金项目(编号:41102205);“十二五”国家科技支撑计划305项目(编号:2011BAB06B00);中央级科研院所基本业务费项目(编号:K1208、K1213)的资助

摘　　要：石膏和盐类矿物的实测光谱特征表明,石膏反映在ASTER图像631(ETM图像743)假彩色合成图上呈现浅天蓝色调,而石盐为弱粉红色的色调特征。文章在此基础上利用主成分分析提取了石膏与盐类矿物的信息。野外查证结果显示,本次提取的信息与实际地物对应良好,并且在野外查证中新发现了一处含钾石盐层,根据遥感信息推测喀什西南凹陷区(文中D区)为找钾的预测区。In this paper, actual spectral curves of gypsum and halite were measured by a spectrometer. The results show that spectral characteristics of gypsum can be identified by ASTER/ETM bands, which show pale blue hue characteristics in the ASTER 631 or ETM 743 false-color composite image. Based on the above characteristics, some anomalistic information of gypsum and halite was extracted by using PCA method. In combination with field verification, it can be concluded that the extracted information in this paper is consistent with the actual strata. The field verification led to the discovery of a new potassium-bearing halite layer, which seems to be a potassiumprospecting prognostic area, as inferred by remote-sensing information. Key words： geology, remote sensing, potassium, gypsum, spectrum

关 键 词：地质学 遥感 钾盐 石膏 光谱 

分 类 号：P627[天文地球—地质矿产勘探] P619.211[天文地球—地质学]