利用sPn震相测定台湾海峡M6.2地震震源深度  

Precise Determination of the Focal Depth of Taiwan Strait M6.2 Earthquake by sPn Phase

作　　者：陈惠芳[1] 林彬华 张燕明 蔡杏辉[1] 于伟恒 CHEN Huifang;LIN Binhua;ZHANG Yanming;CAI Xinghui;YU Weiheng(Fujian Earthquake Agency,7 Huahong Road,Fuzhou 350003,China;College of Civil Engineering,Fuzhou University,2 Xueyuan Road,Fuzhou 350116,China)

机构地区：[1]福建省地震局,福州市350003 [2]福州大学土木工程学院,福州市350116

出　　处：《大地测量与地球动力学》2021年第8期853-857,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(4179460014)。

摘　　要：采用波形互相关技术获得Pn震相准确到时,然后应用滑动时窗相关法获取sPn与Pn震相的走时差,通过该走时差测定台湾海峡M6.2地震震源深度为14.7 km,并对测定的结果进行分析解释。对比本文计算结果与CAP方法的反演结果得出,本文研究方法更加方便、快捷、精确。The accurate arrival times of Pn phase are first obtained by waveform cross-correlation technique,and then we use the sliding window correlation method to get the time differences of the sPn and Pn phases.The time differences results of sPn and Pn phases are used to obtain the epicenter depth of the M6.2 Taiwan strait earthquake,which is 14.7 km.We present a comprehensive interpretation and analysis.Finally,the results of this paper are compared with inversion results of CAP method which shows our method is more convenient,precise and faster.

关 键 词：台湾海峡地震 震源深度 SPN震相 波形互相关 滑动时窗相关法 

分 类 号：P315[天文地球—地震学]