大地测量与地球动力学2018，Vol.38Issue(6)：624-628,638,6.DOI:10.14075/j.jgg.2018.06.015
青海门源Ms6.4地震震源机制解与震源深度研究
Research on Focal Mechanism and South Depth of Menyuan,Qinghai Ms6.4 Earthquake
摘要
Abstract
Based on waveform data recorded by 19 broadband digital stations of Gansu,Qinghai and Ningxia regional seismic network,we use the CAP method to calculate the focal mechanism solution and the optimal focal depth of Menyuan Ms6.4 earthquake in January 21,2016.The results show that the double-couple solution is:nodal Ⅰ:strike 143°,dip angle 40°,slip angle 71°;nodal Ⅱ:strike 347.2°,dip angle 52.6°,slip angle 105.3°.The moment magnitude is Mw5.9 and the optimal depth is 7.7km,which is consistent with the results of others (such as CENC,IGP-CEA and Harvard).Using the arrival time difference between sPn phase extracted by sliding window correlation method,we obtain the focal depth of 8.5 km,which is coincident with the result of CAP inversion,and we validate the feasibility of the method.关键词
门源6.4级地震/震源机制解/互相关/震源深度Key words
Menyuan Ms6.4 earthquake/seismogenic mechanism solution/cross correlation/focal depth分类
天文与地球科学引用本文复制引用
尹欣欣,赵林林,杨立明,陈继锋,左可桢,蒲举..青海门源Ms6.4地震震源机制解与震源深度研究[J].大地测量与地球动力学,2018,38(6):624-628,638,6.基金项目
中国地震局测震台网青年骨干专项(20170624) （20170624）
国家自然科学基金(41601479).Young Talents Training Project for the Seismic Network,CEA,No.20170624 （41601479）
National Natural Science Foundation of China,No.41601479. （）
