【摘要】 选取2010—2024年黑龙江嘉荫—萝北地区地震波形资料，计算得到150个M_L≥2.0地震事件视应力和50个M_L≥2.5地震事件震源机制解。根据视应力时序变化分析，研究区周边显著地震一般在视应力升高后发生；根据震源机制一致性的时序变化分析发现，研究区周边显著地震一般发生在震源机制一致性较高时段。二者表现出的同步异常为判定区域地震危险性提供了重要依据。更多还原

【Abstract】 Seismic waveform data from 2010 to 2024 in the Jiayin-Luobei region of Heilongjiang Province were selected to calculate the apparent stress of 150 earthquake events with M_L≥ 2.0 and the focal mechanism solutions of 50 earthquake events with M_L≥ 2.5. According to the analysis of the temporal changes in apparent stress, significant earthquakes around the study area generally occurred after the increase of apparent stress. According to the analysis of the temporal changes in the consistency of the focal mechanism, it was found that significant earthquakes around the study area generally occurred during periods of high consistency in the focal mechanism. The synchronous anomalies exhibited by both serve as critical evidence for evaluating regional seismic hazard.更多还原