Seismological Bureau of Sichuan Province, Chengdu 610041, China;
Seismological Bureau of Sichuan Province, Chengdu 610041, China;
Seismological Bureau of Sichuan Province, Chengdu 610041, China;
Seismological Bureau of Sichuan Province, Chengdu 610041, China;
Yajiang earthquake; sequence characteristics; source parameters;