塔娜,鲍甜甜,冯一鸣,王瑞雪.湖南长城岭-凤凰山地区遥感蚀变信息提取与成矿预测[J].地质找矿论丛,2021,36(3):328-341
湖南长城岭-凤凰山地区遥感蚀变信息提取与成矿预测
Remote sensing alteration information extraction from Changchengling-Fenghuangshan area, Hunan province and the metallogenic prediction
投稿时间:2021-02-04  修订日期:2021-07-06
DOI:10.6053/j.issn.1001-1412.2021.03.010
中文关键词:  Landsat-8数据  Worldview-Ⅱ数据  蚀变信息提取  主成分分析法  比值法  湘南地区
英文关键词:data from Landsat 8  data from Worldview II  alteration information extraction  principle anslysis  ratio  the South Hunan province
基金项目:国家重点研发计划项目(编号:2018YFC0603902)资助。
作者单位E-mail
塔娜 昆明理工大学国土资源工程学院, 昆明 650093  
鲍甜甜 昆明理工大学国土资源工程学院, 昆明 650093  
冯一鸣 昆明理工大学国土资源工程学院, 昆明 650093  
王瑞雪 昆明理工大学国土资源工程学院, 昆明 650093 270173206@qq.com 
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中文摘要:
      长城岭-凤凰山地区位于湘南多金属矿集区,找矿前景较好。通过Landsat-8遥感影像解译长城岭-凤凰山一带的线-环结构,发现长城岭"Ф"型构造特征;根据实测围岩蚀变光谱特征,选用主成分分析法和比值+主成分分析法,基于landsat-8 OLI数据提取了长城岭-凤凰山地区铁染、羟基及硅化蚀变异常信息,基于Worldview-Ⅱ数据提取背首-凤凰山地区铁染蚀变异常信息。经野外验证及多元地学信息对比证实蚀变提取结果的准确性,比值+主成分分析法具有更好的提取效果,高分辨率影像提取该区蚀变信息具有更高的精度,并圈定了成矿远景区。
英文摘要:
      Changchengling-Fenghuangshan area is located in the South Hunan ore-deposit-clustered region with prospecting potential. Landsat 8 setillite image of the area is interpreted and the line loop structure delineated. Spectrum of the wall rock alterations are measured and the principle component analysis and rato+principle component analysis are choosed to extract iron stain, hydroxyl and silicification spectral characteristics based on Landsat 8's OIL data. Iron stain anomaly information of Beishou-Fenhhuangshan area is extracted with Worldview II data. Field check and comparison of multi sourced geological information verify that the above extraction is accurate, the ratio+principle component analysis extraction is better and extraction from the high resolution image more accurate.
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