【摘要】 利用上海及其邻近地区地震台网两个剖面上自2002年以来256个远震记录,提取得到高质量的接收函数,通过对这些接收函数的共转换点叠加得到研究区的间断面的分布及形态。研究结果表明,剖面上的上地幔间断面410km,660km间断面没有明显的起伏变化,从而证实了西太平洋俯冲带对中国东部的影响在东北、华北和华东有显著差别。更多还原

【Abstract】 Using 256 teleseismic waveform data recorded by Shanghai and its neighboring seismic network since 2002, totally 423 high quality receiver functions were extracted.Through stacking these receiver functions in terms of midpoint stacks of P converted to S waves,the discontinuity distributions along with their patterns were obtained.The results show that beneath the studied area, 410 km,and 660 km discontinuities exist, and they don′t have obviously fluctuant change, then it can approve that the West Pacific plate has obvious difference on Northeast, East China, North China.更多还原