| 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。 |
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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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