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2010年4月14日发生在青海省玉树县的里氏7.1级地震对人民的生命和财产造成了严重的损害.利用宽幅、干涉和极化3种模式SAR数据,课题组进行了如下研究:①利用RADARSAT-2宽幅SAR数据,分析了玉树地震的区域地质构造和岩性分布特征;②利用ALOS/PALSAR干涉SAR数据,获取同震形变场,结合区域地质背景分析了形变程度以及空间分布;③利用极化SAR数据,采用H-α-p方法提取地震造成的玉树县城倒塌建筑物空间分布,并分析了建筑物的倒塌原因.研究证明了多模式SAR在地震灾情协同分析与评价中的有效性和重要潜力.
The earthquake of magnitude 7.1 in Yushu County, Qinghai Province, on April 14, 2010, caused serious damage to the life and property of the people. Using the wideband, interference and polarization three patterns of SAR data, the research group conducted the following research : (1) The regional geological structure and lithology distribution characteristics of Yushu earthquake were analyzed by using RADARSAT-2 wide-area SAR data; (2) The coseismic deformation field was obtained by using ALOS / PALSAR interferometric SAR data; and the degree of deformation and space (3) The spatial distribution of the collapsed buildings in Yushu county caused by earthquakes was extracted by using polarimetric SAR data and H-α-p method, and the reasons for the collapse of the buildings were analyzed.The research proves that the multi-mode SAR in the earthquake disaster coordination analysis and evaluation In the validity and important potential.