唐山地区慢剪切波的时间延迟:强地面运动台阵资料分析

利用唐山地区强地面运动台阵资料 ,根据剪切波分裂的 CDP分析方法 ,对唐山地区剪切波分裂时间延迟参数进行了讨论。通过选取具有相同射线方向的波形记录的剪切波分裂分析 ,得到较大地震 (ML 5.2 )之前的时间延迟值高于震后的时间延迟值。特别是 ,文章提出的研究剪切波分裂时间延迟的时间变化的思路 ,是实际分析中需要加以注意的。文章认为 ,利用剪切波分裂进行较大地震的监控和预测 ,具有重要的意义

Time delays of slow shear wave in Tangshan Region: analysis on data of strong ground motion array

Using the data of the strong ground motion array in Tangshan region,i.e.SGAT and the CDP analysis method,this paper discusses the time delay parameters of shear wave splitting in Tangshan region.The results suggest that time delay values before a relative large earthquake( M L 5 2)are higher than those after the earthquake for the recordings of same ray direction.Although limited data,this paper suggests that it is very important to use the shear wave splitting method to monitor the relative large coming earthquake.