| 用ASTER数据提取云南个旧西区矿化蚀变信息 |
| |
| 引用本文： | 陈小云,胡光道.用ASTER数据提取云南个旧西区矿化蚀变信息[J].云南地质,2008,27(4):502-508. |
| |
| 作者姓名： | 陈小云 胡光道 |
| |
| 作者单位： | 1. 广州市地质调查院,广州,510440;中国地质大学数学地质与遥感地质研究所,地质过程与矿产资源国家重点实验室,湖北,武汉,430074
2. 中国地质大学数学地质与遥感地质研究所,地质过程与矿产资源国家重点实验室,湖北,武汉,430074 |
| |
| 基金项目： | 云南云锡集团公司横向合作项目 |
| |
| 摘 要： | 以ASTER影像为数据源、野外实测波谱数据为参考，用光谱角分类法（SAM）在个旧矿区提取矿化蚀变信息。为剔除假“异常”信息，用ASTER热红外波段的比值计算定义硅酸盐、碳酸盐和超基性岩指数作RGB合成得反应岩性信息的影像，据此确定西区重点研究区。在此区域再次用SAM提取矿化蚀变信息，结合用ASTER短波红外数据的比值计算增强的构造信息，分析提取的重点研究区矿化蚀变信息结果，为该矿区找矿工作提供了参考。
|
| 关 键 词： | ASTER景像 Level1A等级 蚀变信息提取 目标区确定 云南个旧西区 |
THE EXTRACTION OF METALLOGENESIS AND ALTERATION INFORMATION OF WEST GEJIU, YUNNAN WITH ASTER |
| |
| CHEN Xiao-yun,HU Guang-dao.THE EXTRACTION OF METALLOGENESIS AND ALTERATION INFORMATION OF WEST GEJIU, YUNNAN WITH ASTER[J].Yunnan Geology,2008,27(4):502-508. |
| |
| Authors: | CHEN Xiao-yun HU Guang-dao |
| |
| Institution: | CHEN Xiao-yun, HU Guang-dao (1. Guangzhou Institute of Geological Survey, Guangzhou 510440;2. Institute of Mathematical Geology ＆ Remote Sensing, China University of Geoscience, Wuhan 430074;3. State Key Lab of Geological Process and Mineral Resources, China University of Geoscience, Wuhan 430074) |
| |
| Abstract: | The metallogenesis and Alteration information of Gejiu Orefield are extracted with the classification method(SAM) of spectrospic angle,using ASTER as the data source and referring to the field measured wave spectrum data.In order to get rid of the false "anomaly" information,the indices of silicate,carbonate and ultrabasic rock are calculated and defined with the ASTER thermal infrared spectra ratio,then making RGB and composite image of Lithological information,thus the key area of west region is determined.In this area,we use SAM for extracting the metallogenesis and alteration information again.In combination with the intensive structural information calculated with the ASTER short wave infrared data,analysis of the result of extracted metsllogenesis and alteration information of the key area,which has provided the reference material for the ore prospecting in this orefield. |
| |
| Keywords: | ASTER Image Level 1A Extraction of Alteration Information Determination of Target Area West Gejiu Yunnan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
