根河地震台、海拉尔地震台面波震级偏差分析OA

Using 156 earthquake events with MS≥5.5 and clear waveforms recorded by both the Hailar Seismic Station and Genhe Seismic Station between January 1,2022 and December 31,2022,to compare the magnitude deviations between the surface wave magnitude MS measured by the Hailar Seismic Station and Genhe Seismic Station and the surface wave magnitude MS published by the China Earthquake Networks Center,and analyze the relationship between the magnitude and the epicenter distance with the deviation.The results show that the magnitude deviation of surface wave at the Hailar Seismic Station is relatively large with about 0.35 magnitude smaller than the magnitude of surface wave in the official catalogue of China Earthquake Networks Center.The magnitude deviation of the surface wave at the Genhe Seismic Station is relatively small with about 0.01 magnitude from the magnitude of the surface wave recorded in the official catalogue of the China Earthquake Networks Center.The magnitude deviation at the Hailar Seismic Station is the smallest when the magnitude is in the range of 6.6-7.0,while that at the Genhe Seismic Station increases with the magnitude.The magnitude deviation of the Hailar Seismic Station and the Genhe Seismic Station increases with the increase of epicenter distance.