利用高频GPS进行地震动态变形分析及地震定位  

KINEMATIC ANALYSIS OF COSEISMIC DEFORMATION AND SEISMIC LOCATION USING HIGH-RATE GPS

作　　者：吴继忠[1] 吴文坛 

机构地区：[1]南京工业大学测量系,南京210009 [2]河北省测绘资料档案馆,石家庄050031

出　　处：《大地测量与地球动力学》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)

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.

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 

分 类 号：P228.1[天文地球—大地测量学与测量工程]