首页> 外文会议>Geoscience and Remote Sensing Symposium, 2008 IEEE International-IGARSS 2008 >Monitoring Crustal Deformation along the Xianshuihe Fault in the Eastern Tibetan Margin Area with Envisat ScanSAR Interferometry
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Monitoring Crustal Deformation along the Xianshuihe Fault in the Eastern Tibetan Margin Area with Envisat ScanSAR Interferometry

机译:利用Envisat ScanSAR干涉仪监测藏东边缘地区鲜水河断层的地壳形变

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The Xianshuihe fault of Sichuan province, southwest China, is a highly active strike-slip fault approximately 350 km long. Previous studies have described up to 10-17 mm/yr of left-lateral slip on the Xianshuihe fault during the last decades, as indicated from geological criteria and GPS observations. The satellite InSAR observation is an alternative technique effectively used to measure the crustal deformation on the active fault. However, the conventional strip mode SAR imagery (i.e. ENVISAT/ASAR IM image) covers usually a 100 km wide stripe and will therefore not be sufficient for such large-scale deformation study. In this paper, we presented ScanSAR interferometry applied to ENVISAT/ASAR WSM data to produce about 400??400 km2 deformation map over the Xianshuihe fault zone and the Garz?a-Yushu fault zone. The preliminary stacked deformation results of six WS-WS interferograms indicated a northeast-southwest deformation trend nearly perpendicular to the two fault zones and demonstrated the potential to monitor such wide-stretched deformation using ENVISAT WSS data.
机译:西南四川省仙水河断路,是大约350公里长的高度积极的滑动故障。如地质标准和GPS观察所示,之前的研究已经描述了Xianshuihe故障的10-17毫米/年左侧滑动。卫星Insar观察是一种有效地用于测量主动故障的地壳变形的替代技术。然而,传统的条带模式SAR图像(即Envisat / ASAR IM图像)通常是100公里宽的条纹,因此对于这种大规模变形研究而言,不足。在本文中,我们介绍了应用于Envisat / ASAR WSM数据的Scansar干涉测量,以在仙水断层区域和GARZ中产生约400 km2的400平方公司变形图。A-Yushu断层区域。六个WS-WS干涉图的初步堆叠变形结果表明了东北 - 西南变形趋势几乎垂直于两个故障区域,并展示了使用Envisat WSS数据监测这种宽拉伸变形的可能性。

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