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。
The high-rate GPS data from 8 stations in the 2011 Mw9.0 Tohoku earthquake were processed by u- sing precise point positioning, and the displacement time series at each GPS site were analyzed to derive displace- ment waveforms for this event. The results indicate that the maximum displacement of GPS stations during the earth- quake 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 epicen- ter 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.
出处
《大地测量与地球动力学》
CSCD
北大核心
2012年第2期20-23,共4页
Journal of Geodesy and Geodynamics
基金
精密工程与工业测量信息局重点实验室开放基金(PF2011-9)
地球空间环境与大地测量教育部重点实验室开放研究基金(10-01-12)
江西省数字国土重点实验室开放基金(DLLJ201105)
关键词
高频GPS
日本Mw
9.0地震
精密单点定位
同震变形
地震定位
high-rate GPS
Mw9.0 Tohoku earthquake
precise point positioning
coseismic displacement
seismiclocation
