用接收函数方法研究上海地震台阵下地壳结构  

Crustal structure in the Shanghai region determined by modeling receiver function

作　　者：王俊菲[1] 朱元清[1,2] 王小平[2] 

机构地区：[1]同济大学海洋与地球科学学院,中国上海200092 [2]上海市地震局,中国上海200062

出　　处：《地震地磁观测与研究》2010年第2期50-55,共6页Seismological and Geomagnetic Observation and Research

基　　金：科技部科技基础性工作专项(080101)资助

摘　　要：利用上海地震台阵16个台站记录的远震资料,采用接收函数线性反演方法,对台阵下的地壳速度结构进行研究,获得了研究区域内地壳厚度和地壳速度的分布特征。研究结果表明,研究区域Moho面深度约为33±2 km,Moho面深度基本不变,地幔顶部S波速度约4.4 km/s,地壳内没有发现明显的低速层。We selected broadband teleseismic waveform data recorded by the Shanghai seismic array to study the crustal thickness and structure in Shanghai region by modeling the teleseismic P wave receiver function. The results show that beneath the studied area, the depth of Moho discontinuity is about 33 ±2 km, without obvious variation. S wave velocity gets up to 4.4 km/s at the depth of Moho discontinuity. There is no obviously low velocity layer in the crust.

关 键 词：接收函数 地震台阵 地壳速度结构 

分 类 号：P315.7[天文地球—地震学]