2021年12月中国大陆地区M≥4.0地震震源机制解测定

Determination the focal mechanism solutions of earthquakes with M≥4.0 occurred in the mainland of China in December 2021

为了填补测震台网地震震源参数目录常规数据产出方面的空白,本文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对2021年12月1—31日发生在中国大陆地区的M≥4.0共6次地震进行震源机制反演。结果显示逆断型3次,走滑型2次,未知型1次。

In order to fill a gap in the seismological products of the earthquake source parameters catalog of the seismic networks,focal mechanism solutions of the 6 earthquake events with M≥4.0 in the mainland of China from December 1 to December 31,2021 were obtained using the regional full waveform inversion based on the broadband waveforms from China seismic network.The results show that these events include 3 reverse faulting,2 strike-slip faulting and 1 unknown earthquakes.