多源遥感数据在新疆卡拉麦里地区岩矿识别中的应用  

Application of multi-source remote sensing data in rock and mineral identification in Karamaili area,Xinjiang

作　　者：张昭 陈川 李云鹏 ZHANG Zhao;CHEN Chuan;LI Yunpeng(School of Geology and Mining Engineering Xinjiang University,Urumqi,830017;Xinjiang Key Laboratory for Geodynamic Processes and Metallogenic Prognosis of Central Asian Orogenic Belt,Urumqi,830017;Information Center of Xinjiang Bureau of Geology and Mineral Resources,Urumqi,830099)

机构地区：[1]新疆大学地质与矿业工程学院,乌鲁木齐830017 [2]新疆中亚造山带大陆动力学与成矿预测重点实验室,乌鲁木齐830017 [3]新疆地矿局信息中心,乌鲁木齐830099

出　　处：《地质论评》2022年第6期2365-2380,共16页Geological Review

基　　金：“新疆地矿局自然资源卫星应用技术分中心建设及应用示范”项目(编号:XGMB202146)的成果。

摘　　要：遥感技术广泛应用于地质基础调查、矿产资源勘探、环境评估和地质灾害调查等方面。它已从多光谱发展到高光谱阶段,Landsat-8是目前最具有代表性和最常用的多光谱数据,ASTER具有高的分辨率和多波段特征,资源一号02D(ZY1-02D)卫星是我国2019年发射的高光谱业务卫星。为了更好地了解多源遥感数据在岩矿识别中的作用,在新疆东天山卡拉麦里地区进行了相关研究。结果表明:Landsat-8 OLI的PCA变换结果清晰识别了研究区不同的岩性和地层;使用Landsat-8 OLI、ASTER和ZY1-02D高光谱数据,分别采取不同的图像端元提取方法,在进行光谱分析的基础上,利用光谱角填图(SAM)即可得到研究区的主要矿物分类图件。通过野外验证,应用GIS技术进行集成和分析,修正相关图件后,便得到了精准的矿物分类综合图。研究表明:多源遥感数据的集成在岩矿识别方面效果良好、前景巨大。Objective:Remote sensing technology is widely used in basic geological survey,mineral resources exploration,environmental assessment and geological disaster survey.It has developed from multi spectral to hyperspectral.Landsat-8 is the most representative and commonly used multispectral data at present.ASTER has high resolution and multi band characteristics.Resource-102 D(ZY1-02 D)satellite is a hyperspectral operational satellite launched in 2019.In order to better understand the role of multi-source remote sensing data in rock and mineral identification,relevant research was carried out in karamaili area of East Tianshan,Xinjiang.Methods:PC A transformation of Landsat-8 data can obtain an image with rich color and huge amount of information.According to the color,texture,shape,water system and other characteristics of false color synthetic images(R:PC3,G:PC2,B:PC1)of different formation lithology after principal component analysis,all strata and most lithology in the study area can be identified with reference to geological data.For Landsat-8 OLI image after atmospheric correction,the smacc method is used to extract the image endmember spectrum.For ASTER and ZY1-02 D ahsi images after atmospheric correction,fringe removal and MNF processing,PPI and n-dimensional visualization tools are used to extract the endmember spectrum,and spectral analysis is carried out with the pop of USGS standard mineral spectrum library as a reference to determine the mineral types represented by the extracted endmember pop.Finally,the endmember pop is regarded as a known pop,Sam method and image pop are used for comparative analysis to achieve the purpose of mineral classification and recognition.Through field verification,GIS software is used to modify the mineral identification and classification map of multi-source remote sensing data,so as to obtain an accurate comprehensive map of mineral identification and classification in the study area.Results:The results show that the PC A transformation results of landsat-8 oli clearly id

关 键 词：新疆卡拉麦里 多源遥感数据 端元提取 岩矿识别 矿物分类制图 

分 类 号：P627[天文地球—地质矿产勘探]