2022年10月—2023年2月中国大陆地区M≥4.0地震震源机制解测定  

Determination of focal mechanism solutions of the earthquakes with M≥4.0 occurred in the mainland of China during October 2022 to February 2023

作　　者：梁姗姗[1] 邹立晔[1] 刘艳琼 Liang Shanshan;Zou Liye;Liu Yanqiong(China Earthquake Networks Center,Beijing 100045,China)

机构地区：[1]中国地震台网中心,北京100045

出　　处：《地震科学进展》2023年第4期185-191,共7页Progress in Earthquake Sciences

基　　金：中国地震局常规性项目“测震学科技术管理组运维”资助。

摘　　要：利用中国地震台网记录的宽频带波形资料,采用近震全波形反演方法得到2022年10月1日—2023年2月28日发生在中国大陆地区的M≥4.0共46次地震的震源机制解以及2023年1月30日新疆沙雅M6.1地震的矩心位置和矩心偏移时间。结果显示逆断型15次,走滑型15次,正断型14次,未知型2次。In this paper,the regional full waveform inversion using the broadband waveforms recorded by China Seismic Network were conducted,and the focal mechanism solutions of the 46 earthquakes with M≥4.0 occurred in the mainland of China from October 2022 to February 2023 were obtained.The centroid location and time shift of the M6.1 Shaya,Xinjiang earthquake were determinated by a grid search in the horizontal plane.The types of these focal mechanism solutions show 15 reverse faulting,15 strike-slip faulting,14 normal faulting and 2 odd earthquakes.

关 键 词：震源机制 震源参数 

分 类 号：P315.33[天文地球—地震学]