中文摘要：

以相对稳定的上海站（SHAO）为参考站，利用GAMIT／GLOBK的TRACK运动学分析模块对日本周边8个连续观测站的1HzGPS数据进行处理，获取并分析了2011年日本Mw9．0地震引起的动态地壳形变。结果表明，震时上盘各GPS站点主运动方向为东南方向，其中距震中较近的MIZU站和USUD站水平最大振幅分别达到3．11m和0．67In。为了削弱定位结果中与测站环境有关的系统误差，采用改进的恒星日滤波法对USUD站南北向动态时序进行滤波处理。经过滤波处理后，USUD站南北向动态时序离散度RMS由1．65cm降低至0．82CB。

英文摘要：

Using kinematic analysis module TRACK of GAMIT/GLOBK to process 1 Hz GPS data of eight con-tinuous stations around Japan by regarding the IGS site SHAO as a reference, we obtained and analyzed the kine- matic deformation series which caused by the Mw9.0 Japan earthquake on March 11,2011. The result shows that most of the stations were moving towards southeast when the earthquake occurred. The maximum horizontal ampli- tude of MIZU and USUD , the two closest sites to the epicenter, are 3.11 m and 0.67 m ,respectively. To reduce systematic errors in the positioned result which are relevant to the surrounding environment of station, we filtered the kinematic deformation series of USUD in N-S direction using modified sidereal filtering method. After applying modified sidereal filtering method, the root mean square error of kinematic deformation series of USUD in N-S direc- tion is decreased from 1.65 cm to 0.82 cm.