【作者】 李先华； 尹京苑； 刘学锋； 顾澎涛； 林晖；

【Author】 Li Xian-hua1,2,Yijin-yuan1,4,Liu Xue-feng1,Gu Peng-shou3,Lin Hui2 1Research center of Remote Sensing and spatial Information Science,Shanghai University,Shanghai(200072) 2Joint Laboratory of Geosciences Information,Chinese Academy of Sciences and The Chinese University of Hong Kong,Hong Kong 3Shanghai Academy of Geological Survey,Shanghai(200072) 4Shanghai Earthquake Administration,Shanghai(200062)

【机构】 上海大学遥感与空间信息科学研究中心； 上海地震局地震研究所； 上海地质局地质调查研究院； 中国科学院暨香港中文大学地球信息科学联合实验室；

【摘要】 利用2006年10月8日MODIS遥感数字图像,反演生成了上海及邻近地区地面反射率分布图,并根据上海及邻近地区地面波谱特性和MODIS像元地面反射率的变化规律解释该图。研究发现,在该地区第五波段MODIS地面反射率分布图上,清楚地显现出一条:走向为北北东,北起长江口的吴淞,南达杭州湾的乍浦,长约180公里;最宽处约为10-12公里、最窄处约为6-8公里的大断裂。课题组将该条断裂命名为"沪西大断裂"。该条断裂的遥感发现获得了航重磁推测资料和钻孔资料的支持。在同一幅地面反射率分布图上,还可以获得其它多个与航磁(重力)资料一致的地下构造的信息。"沪西大断裂"的遥感发现充分显示了多(高)光谱遥感图像具有探测地下隐伏断裂构造信息的潜力。多(高)光谱遥感图像特殊波段的地面反射率分布图像对于区域隐伏地质构造和古环境研究具有方法论的意义。更多还原

【Abstract】 The distributing map of surface reflectivity of Shanghai city and its adjacent areas is generated by MODIS remote sensing image.According to the surface spectrum features of this area and the changing characters of surface reflectivity caused by MODIS pixels,we explain the distributing map of surface reflectivity as follows.In the fifth wave band of MODIS,the distributing map of surface reflectivity distinctly shows that there is a deep and spacious fault.The fault is 180 km in length from north to east.The north place is the Wusong in the Yangtze River Estuary and the south place is Zapu around the Hangzhou bay.The widest place and the narrowest place are approximately 10-12 km and 6-8 km in width,respectively.We name it "Hu-Xi fault".Our conclusions are supported by the aeromagnetic data.We also analyze the changing characters of surface reflectivity in the section plane and the results prove the existence of this "Hu-Xi fault".On the same distributing map of surface reflectivity,we can find the other spacious fault information.Our conclusions are supported by the other aeromagnetic data.According to the surface spectrum features and the changing characters of surface reflectivity,we can find out the other spacious fault information.更多还原