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基于多源遥感数据的西藏羌多地区地质构造解译

DOI: 10.6046/gtzyyg.2015.03.24, PP. 154-160

Keywords: 羌多地区,多源遥感数据,地质构造解译

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Abstract:

多光谱遥感数据的空间分辨率通常是为解决资源和环境等特定问题而设置的,但是地质构造从区域到手标本可划分为不同尺度,因而单一遥感数据并不能满足多尺度的构造解译。为此,以西藏羌多地区为研究区,利用ETM+,ASTER,WorldView2及DEM等多源遥感数据的综合优势,从30m空间分辨率的ETM+和15m空间分辨率的ASTER到0.5m空间分辨率的WorldView2这2个层次上解译研究区的构造,取得了显著成效。首先,基于传统的构造信息解译标志,用ETM+数据进行构造架构解译,同时运用ASTER数据的波段运算结果间接反映构造信息;然后,开展WorldView2高空间分辨率数据的综合构造解译分析;最后,在野外验证的基础上,对解译的构造信息进行室内修正。研究区的地质构造解译结果表明,综合多源遥感数据可以大大提高地质构造解译的准确率,并在较短的时间内取得较好的应用效果。

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