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中文摘要：
利用覆盖整个日本东北部的3个条带的Envisat/ASAR降轨数据和6个条带的ALOS/PALSAR升轨数据,通过二通差分干涉处理,首先得到了2011年日本Tohoku-Oki Mw 9.0级地震的初步同震形变干涉结果,然后,利用GPS同震观测值对InSAR结果进行校正和基准统一。在此基础上,采用弹性半空间矩形位错模型,联合GPS和InSAR观测结果对同震滑动分布进行反演,获取了发震断层的断层滑动分布。结果显示,此次地震的滑动分布主要发生在40～50km深度范围内,最大滑移量为50.3m,释放的能量为3.20×10^22 N·m（相当于Mw 8.94级）。
英文摘要：
A Mw 9.0 earthquake occurred in the Tohoku-Oki of Japan in 2011. The coseismal deformation observation from GPS and InSAR meanings were used to inverse the slip distri- bution of the earthquake. Firstly, six ascending ALOS/PALSAR tracks and three descend- ing Envisat/ASAR tracks that cover most of northeastern Japan were processing by two-pass interferometric synthetic aperture radar （InSAR） to obtain acoseismic deformation results, which are calibrated by GPS data. Secondly, the rectangle dislocation models in elastic half- space were used to derive the kinematic characteristic of the earthquake fault combining with GPS and InSAR data. The inversion result indicates that the fault slip concentrates mainly in the depth between 40 km and 50 km, the maximum slip is about 50.3 m, the geodetic mo- ment is 3. 197×10^22 N·m（Mw 8.94）.
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