Fluid-induced seismicity: comparison of rate- and state- and critical pressure theory

摘要: Induced seismicity as generated by the injection of fluids in a homogeneous, permeable medium with faults variable proximity to rupture conditions is simulated using rate- and state-dependent frictional fault theory (RST) Dieterich (J Geophys Res 99(B2):2601–2618, 1994) critical pressure (CPT) developed Shapiro (Fluid-induced seismicity, Cambridge University Press, Cambridge, 2015). In CPT, induced local density proportional rate, limited Kaiser Effect, apparently un-related tectonic background seismicity. There no time delay between change rate density. As more complex theory, RST includes it natural Comparing both modelling approaches at fixed location, this can be significant, dependent on ‘free’ parameter that represents lower threshold for below which not triggered. This tuned so results CPT become similar. Approximations allow new interpretation ‘tectonic potential’ controls level CPT.