以和静地震为例分析sPn震相在震源深度测定中的应用  

DETERMINATION OF EARTHQUAKES FOCAL DEPTH BY SPN SEISMIC PHASE:TAKING HEJING EARTHQUAKE AS AN EXAMPLE

作　　者：闫新义 赵石柱[1] 孔祥艳[1] YAN Xin-yi;ZHAO Shi-zhu;KONG Xiang-yan(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)

机构地区：[1]新疆维吾尔自治区地震局

出　　处：《内陆地震》2019年第2期187-192,共6页Inland Earthquake

基　　金：中国地震局地震科技星火计划(XH17043Y);中国地震局测震台网青年骨干培训专项任务(20170627);新疆地震科学基金(201711)联合资助

摘　　要：利用新疆台网波形数据,对2012年6月30日新源、和静交界区MS6.6地震以及2012年6月30日和静MS4.2地震波形中sPn震相进行分析。通过sPn震相与Pn震相的到时差,并结合2015年新疆模型和3400走时表模型对两个地震进行震源深度测定。结果表明,采用两个模型得出的震源深度与中国地震台网中心测定深度的误差分别为1.7km与1.5km,2.4km与2.1km,其结果真实可靠。Based on the waveform data of Xinjiang seismic network,the source depths of the MS6.6 earthquake on 30th June 2012 in Xinyuan,Hejing junction area and the sPn phases in the MS4.2 and MS4.2 seismic waveforms on 30th June 2012 are analyzed.The focal depths of two earthquakes are determined by the arrival time difference between sPn and Pn phases,combined with Xinjiang 2015 model and 3400 travel time table madel.The results show that errors of focal depth obtained by two models are 1.7 km and 1.5 km,2.4 km and 2.1 km,respectively,which are reliable.

关 键 词：SPN震相 震源深度 2015新疆模型 3400走时表 

分 类 号：P315.6[天文地球—地震学]