摘要
分别利用近震波形反演求解震源机制解的gCAP方法和全波形反演方法反演了鲁甸M S6.5地震的震源机制解,并比较两种方法的优点与特性。结果发现,数据方位角的覆盖范围会影响解的稳定性,在使用gCAP方法时尤其需要注意;两种方法获取的震源机制解结果较为一致,走向为73°~77°,倾角为72°~85°,滑动角为157°~180°。
In this article,we briefly review the gCAP(general cut and paste)and the full-waveform inversion focal mechanism solution inversion theories using the regional seismic waveform.These methods are applied to the focal mechanism solution inversion of the Ludian M S6.5 event.The main idea of this work is to evaluate the reliability of the inversion results and to compare the two methods in real data application.According to the comparison,we find that the bad azimuthal coverage decreases the reliability of inversion results.In conclusion,the source mechanism is strike 73°-77°,dip 72°-85°,and rake 157°-180°,inversed by gCAP and full-waveform method.
作者
陈俊磊
周青云
刘峰
张天继
杨黎薇
赵昆
CHEN Junlei;ZHOU Qingyun;LIU Feng;ZHANG Tianji;YANG Liwei;ZHAO Kun(Yunnan Earthquake Agency,148 Beichen Road,Kunming 650224,China;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,CAS,19 West-Beitucheng Road,Beijing 100029,China;University of Chinese Academy of Science,A19 Yuquan Road,Beijing 100049,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2021年第1期79-82,共4页
Journal of Geodesy and Geodynamics
基金
云南省地震局地震科技专项(2020ZX01,2017K04,2018ZX02)
中国地震局地震科技星火计划(XH18042Y)。
关键词
近震波形反演
震源机制解
gCAP
全波形反演
regional waveform inversion
focal mechanism solution
gCAP
full-waveform inversion
