2011年3月l1日日本发生MW 9.0强烈地震，泰安地震台地震前兆体应变记录到显著震后异常，即震后弛豫效应，结合GPS数据，探讨地壳应力新平衡状态调整过程及地形变调整机理，为数据跟踪分析提供地球物理事件识别及判定依据。%A strongMW 9.0 earthquake occurred in Japan on March 11, 2011. The earthquake precursor strain anomaly is record at Taian Seismic Station after the earthquake, which is post-seismic relaxation effect. Combined with GPS data, we explored the adjustment process of the new equilibrium state of crustal stress and the mechanism of topographic variation, and provided identiifcation and judgment basis for geophysical event on data tracking analysis.
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