We estimated the seismic energy radiated by 47 earthquakes located near the faults that rupture during the 3 May 1887 Mw 7.5 Sonora earthquake in the Mexican Basin and Range Province. We retrieve source parameters from seismograms recorded by the local network RESNES (Red Sismica del Noreste de Sonora) that operated from 2003 to 2011, using a spectral inversion technique. We calculated the seismic energy by integrating the square velocity source spectrum of the earthquakes analyzed. We found that events with high-scaled seismic energy (E_s/M_o) are located at the southern end of the fault that rupture in 1887, between the stepovers of the fault segments Teras and Otates. It is likely that tectonic stress accumulated in that zone after the fault ruptured. We estimate an average log(E_s/M_o) = − 5.76 and found that most earthquakes analyzed have low apparent stress, varying between 0.5 × 10⁻³ and 1.85 MPa, with an average value of 0.0521 MPa. The apparent stress is heterogeneous not showing a clear correlation with seismic moment or focal depth.

我们估算了1887年5月3日墨西哥盆地和兰格省Mw 7.5索诺拉地震破裂的断裂附近的47次地震辐射的地震能量。我们使用频谱反演技术从2003年至2011年运行的RESNES（红色Sismica del Noreste de Sonora）本地网络记录的地震图中检索源参数。我们通过整合所分析地震的方波速度源谱来计算地震能量。我们发现具有高尺度地震能的事件（E _s / M _o）位于1887年破裂的断层南端，位于Teras和Otates断层段的阶跃之间。断层破裂后，构造应力可能聚集在该区域。我们估计平均log（E _s / M _o）=-5.76，发现分析的大多数地震的表观应力均较低，介于0.5×10 ^-3和1.85 MPa之间，平均值为0.0521 MPa。表观应力是不均匀的，与地震矩或震源深度没有明显的相关性。