OLI与ETM+数据在豫西沉积型铝土矿找矿中的对比研究  

Comparative study of sedimentary bauxite resources in Western Henan province by OLI data and ETM+data

作　　者：成功[1] 曾令瑶[1] 陈松岭[1] 

机构地区：[1]中南大学地球科学与信息物理学院,有色金属成矿预测教育部重点实验室,湖南长沙410083

出　　处：《轻金属》2014年第11期7-11,共5页Light Metals

摘　　要：利用Landsat8卫星获取OLI数据和Landsat7卫星获取的ETM+数据,采用主成分分析方法分别提取河南陕县-渑池-新安铝土矿带的铝土矿化蚀变信息,并通过两种数据源提取的蚀变异常信息对比分析,评价OLI数据与ETM+数据在沉积型铝土矿找矿应用的效果。结果表明,OLI数据和ETM+数据均能很好地提取铝土矿蚀变信息,但OLI数据提取的信息更清晰、准确地反映了铝土矿的空间分布。OLI数据能很好的代替ETM+数据,在沉积型铝土矿找矿中将发挥更大的作用。Using principal component analysis, image processing and analysis, the image data of Landsat 80LI and Landsat 7 ETM ＋ have been carried out to extract the information of bauxite mineralization alteration anomaly in Shanxi - Mianchi - Xinan bauxite - minerogenic area, Western Henan. By the comparison between two kinds of data for extraction of alteration information, the effect of OLI and ETM ＋ data on remote sensing exploration of sedimentary bauxite is evaluated. The result shows that both of the OLI and ETM ＋ data can be utilized to extract the bauxite mineralization information successfully, but the information extracted from OLI data performances the distribution of bauxite more clearly and more accurately. OLI data will be substituted for ETM ＋ data, and will play a more important role in remote sensing exploration of sedimentary bauxite.

关 键 词：OLI数据 ETM+数据 遥感信息提取 主成分分析 

分 类 号：P618.45[天文地球—矿床学] P627[天文地球—地质学]