| 黄照强.基于ASTER 和ETM+数据的蚀变信息提取
比较研究———以西藏泽当矿田为例[J].地质与勘探,2009,45(5):606-611 |
| 基于ASTER 和ETM+数据的蚀变信息提取
比较研究———以西藏泽当矿田为例 |
| Extraction of Alteration Anomalies Based on ASTER and ETM+ Data:A Case Study of Tsedang Orefield, Tibet |
| 投稿时间：2009-05-25 修订日期：2009-08-20 |
| DOI： |
| 中文关键词: ASTER ETM+ 蚀变信息 光谱 主成分分析 泽当矿田 |
| 英文关键词: ASTER, ETM+, alteration anomaly, spectra, principal component analysis, Tsedang Orefield |
| 基金项目:中国冶金地质总局科研项目“西藏冈底斯东段铜多金属资源评价与新方法技术研究冶资助。 |
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| 中文摘要: |
| [摘要]利用ASTER 和ETM+数据分别对西藏泽当矿田试验区进行了遥感数据矿物蚀变信息提
取。根据研究区岩石矿物光谱特征,采用主成分分析法,提取了含三价Fe 离子和粘土矿化蚀变信息,通
过对两者提取的结果进行比较之后认为,ASTER 数据比ETM+数据在矿化蚀变信息提取中能进一步识
别不同类型的含羟基蚀变矿物,并且也能很好的提取含三价Fe 离子蚀变信息,未来具有较大的优势。 |
| 英文摘要: |
| Abstract:Remote sensing has been one of the important technical ways of geology mapping and exploration. Lithology identification, geological construction
interpreting and alternation anomalies extraction strongly support exploration using remote sensing. In this study, extraction of alteration anomalies is implemented
based on ASTER and ETM+ data on Tsedang Orefield, Tibet. According the spectral feature of mineral, ferric-iron-oxide and clay alteration anomalies had been
extracted using principal component analysis (PCA). Through comparison the extracted results of ASTER and ETM+ data, the paper shows that ASTER data has
better capability for identification of sorts of hydroxide alteration mineral and extraction of ferric-iron-oxide alteration anomalies than ETM+. |
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