吕宋海槽、琉球海沟对Lg震相记录特征的影响研究  

Study on the Influence of Lvsonghaicao and Ryukyu Trench on the Recording Characteristics of Lg Phase

作　　者：原超[1] 王九洋[1] 李慧卿[1] 张新航[1] 成少云 YUAN Chao;WANG Jiu-yang;LI Hui-qing;ZHANG Xin-hang;CHENG Shao-yun(Dalian Seismic Station,Liaoning Dalian 116012,China)

机构地区：[1]大连地震台,辽宁大连116012

出　　处：《防灾减灾学报》2018年第3期59-63,共5页Journal of Disaster Prevention And Reduction

摘　　要：根据大连地震台记录的台湾及琉球地区地震,对该地区的Lg震相进行分析研究。结果表明该地区在较小的空间范围内,Lg震相特征出现显著差异。通过选取国内不同方位且震中距相近的其他台站记录资料进行对比分析,琉球海沟—吕宋海槽是在构造上产生这一现象的根本原因。According to the earthquake recorded by Dalian Seismic Station in Taiwan and Ryukyu region, the Lg seismic phase in this region was analyzed and studied. The results show that the Lg seismographic characteristics are significantly different in a small spatial range. According to the data of other stations with different locations and similar epicenter distance, Lvsonghaicao is the fundamental reason of this phenomenon.

关 键 词：Lg震相 低速层 琉球海沟 吕宋海槽 

分 类 号：P315.63[天文地球—地震学]