Figure 2
From: Stress transfer outpaces injection-induced aseismic slip and triggers seismicity
(a) The 2D anti-plane problem with fluid injection in the middle of the fault and along-fault Darcy flow through a permeable fault zone with constant porosity and permeability13. A volume of fault is drawn to illustrate how to convert the linear injection rate q from volumetric injection rate Q distributed over surface area \(A = Lw\), using \(q = Q/A\), by assuming that pressure perturbations are confined to a fault damage zone of width w over a length L. (b) Schematic showing fluid injection into VS part of the fault. As fluid flows along the fault, it encounters a VW patch, in the middle of which exists a stress heterogeneity with elevated prestress \(\tau _0 + \Delta \tau\) compared to \(\tau _0\) in the rest of the domain.
