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首页> 外文期刊>International journal of remote sensing >Geological applications of Landsat Enhanced Thematic Mapper (ETM) data and Geographic Information System (GIS): mapping and structural interpretation in south-west Iran, Zagros Structural Belt
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Geological applications of Landsat Enhanced Thematic Mapper (ETM) data and Geographic Information System (GIS): mapping and structural interpretation in south-west Iran, Zagros Structural Belt

机译：Landsat增强型专题测绘仪（ETM）数据和地理信息系统（GIS）的地质应用：伊朗西南部Zagros结构带的制图和结构解释

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Arabia-Eurasia convergence is achieved in north-west Zagros by a combination of shortening on NW-SE-trending folds and thrusts, mainly in the Zagros Structural Belt, and by right-lateral strike-slip on the NW-SE-trending Main Recent Fault. Structural patterns are often used as indicators of major features on the surface. In the present study, Landsat Enhanced Thematic Mapper (ETM) data from 9 November 2002 was digitally processed to enhance the structural patterns. The contrast stretching of ETM band 4 was found to be the best in displaying lineaments and folds for the area, hence was further processed by using directional filters and generating different combinations of false colour composites (FCCs). Finally, a structural map of the study area (Dezful-Brojerd) was prepared using the processed ETM images. This study indicates that the Landsat ETM data are useful for locating and interpretation of the structural features in the Zagros Structural Belt. Examination of the Landsat ETM 2002 images combined with field visits revealed that the area is highly active and structurally is in a dynamic state due to compressional forces. However the density of the structural features on the imagery calibrated to several field visit data shows that the south and south-east of the study area are not as tectonically active. This may be due to presence of thick evaporite sequence of Gachsaran Formation on the Landsat image.
机译：西北Zagros的阿拉伯-欧亚大陆融合是通过结合缩短NW-SE趋势褶皱和逆冲，主要是在Zagros构造带，以及通过右走向滑动来实现的。故障。结构图案通常用作表面主要特征的指示。在本研究中，对2002年11月9日以来的Landsat增强型专题制图仪（ETM）数据进行了数字处理，以增强结构模式。发现ETM波段4的对比度拉伸在显示该区域的线条和褶皱方面是最好的，因此可以通过使用定向滤镜并生成假彩色复合材料（FCC）的不同组合进行进一步处理。最后，使用处理后的ETM图像准备了研究区域（Dezful-Brojerd）的结构图。这项研究表明，Landsat ETM数据对于定位和解释Zagros结构带中的结构特征很有用。对Landsat ETM 2002图像的检查与实地考察相结合，发现该区域非常活跃，并且由于压缩力而处于动态状态。但是，根据一些实地考察数据校准后的图像上结构特征的密度表明，研究区域的东南部和东南部没有那么活跃的构造作用。这可能是由于Landsat影像上存在Gachsaran地层的厚蒸发岩层。

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