Injection?Induced Seismicity Size Distribution Dependent on Shear Stress

Like natural seismicity, induced seismicity caused by injection also shows a power law size distribution, and its gradient b-value is used for seismic hazard analysis. Despite the well-known result that negatively correlated with differential stress earthquakes, there no similar correlation variations because nearly constant injection-induced we thus investigate dependence on relative shear acting existing fractures, using fault orientation in situ information. The occurring along fractures having high has significantly lower b-values than does associated fractures. We examine dependency slightly changing stress, but relationship not clear. dependent faults, which novel physical explanation of seismicity.