【摘要】 利用精密单点定位技术,得出了日本Mw 9.0地震中8个GPS站的动态变形序列。结果显示:GPS参考站震时最大形变量明显大于永久性变形,东向最大位移达5.9 m,北方向最大位移达1.8 m,水平位移总体朝向震中方向。根据各个参考站记录的地震波到达时间,得到了震中位置及S波传播速度。更多还原

【Abstract】 The high-rate GPS data from 8 stations in the 2011 Mw9.0 Tohoku earthquake were processed by using precise point positioning,and the displacement time series at each GPS site were analyzed to derive displacement waveforms for this event.The results indicate that the maximum displacement of GPS stations during the earthquake is larger than the permanent deformation.The kinematic solutions show that the maximum amplitude of east and north displacement is up to 5.9 m,1.8 m respectively,and horizontal displacements were towards the epicenter on the whole.At last,the epicenter and the S wave velocity is derived from the arrival time recorded by the GPS stations in the region.更多还原