Abstract Using the waveform cross-correlation method, we identify ML≥2.5 repeating earthquakes in Qingshiling, Gaizhou, Liaoning province, which are recorded by Yingkou and Xiuyan stations from 2012 to 2017. We apply the Sato single-scattering model to calculate the frequency dependence of coda Qc value of repeating earthquake sequence and variation characteristics with time. Combined with the seismic activity characteristics of Qingshiling earthquake swarm area in Gaizhou, the results show that the stress reflected by Qc change has a certain correlation with moderate-strong earthquakes. The Qc value fluctuated obviously after ML≥4.0 earthquakes in Gaizhou area, and has the characteristics of local adjustment and recovery. We infer that local stress accumulation is not enough to lead to larger earthquakes, and local accumulated energy is released by medium earthquakes for many times.
SHAO Yuanyuan,WANG Liang,JIA Lihua et al. Study on Variation of Coda Qc Value of Gaizhou Qingshiling Repeating Earthquake Sequence[J]. jgg, 2022, 42(4): 421-425.
SHAO Yuanyuan,WANG Liang,JIA Lihua et al. Study on Variation of Coda Qc Value of Gaizhou Qingshiling Repeating Earthquake Sequence[J]. jgg, 2022, 42(4): 421-425.