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1. Effect of High Pore Fluid Pressure on Slip Behaviors of Gouge-bearing Faults

   https://doi.org/doi:10.1029/2019JB018002  

   Xing T., Zhu (August 2019, Journal of geophysical research)
2. Fault slip controlled by stress path and fluid pressurization rate: FAULT SLIP DURING FLUID PRESSURIZATION

   https://doi.org/10.1002/2016GL068893  

   French, Melodie E.; Zhu, Wenlu; Banker, Jeremy (May 2016, Geophysical Research Letters)
3. Fluid-induced aseismic fault slip outpaces pore-fluid migration

   https://doi.org/10.1126/science.aaw7354  

   Bhattacharya, Pathikrit; Viesca, Robert C. (May 2019, Science)

   Earthquake swarms attributed to subsurface fluid injection are usually assumed to occur on faults destabilized by increased pore-fluid pressures. However, fluid injection could also activate aseismic slip, which might outpace pore-fluid migration and transmit earthquake-triggering stress changes beyond the fluid-pressurized region. We tested this theoretical prediction against data derived from fluid-injection experiments that activated and measured slow, aseismic slip on preexisting, shallow faults. We found that the pore pressure and slip history imply a fault whose strength is the product of a slip-weakening friction coefficient and the local effective normal stress. Using a coupled shear-rupture model, we derived constraints on the hydromechanical parameters of the actively deforming fault. The inferred aseismic rupture front propagates faster and to larger distances than the diffusion of pressurized pore fluid. 

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4. Characteristics of Slow Slip Events Explained by Rate‐Strengthening Faults Subject to Periodic Pore Fluid Pressure Changes

   https://doi.org/10.1029/2022JB026332  

   Perez‐Silva, Andrea; Kaneko, Yoshihiro; Savage, Martha; Wallace, Laura; Warren‐Smith, Emily (June 2023, Journal of Geophysical Research: Solid Earth)

   Key Points Periodic pore fluid pressure perturbations on a rate‐strengthening fault induce slow slip events (SSEs) Source properties of induced SSEs vary with perturbation characteristics (length scale, amplitude, period) Model reproduces source properties of shallow Hikurangi SSEs, and duration and magnitude of SSEs in different subduction zones 

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5. Nucleation and Arrest of Fluid‐Induced Aseismic Slip

   https://doi.org/10.1029/2022GL101228  

   Jacquey, Antoine_B; Viesca, Robert_C (February 2023, Geophysical Research Letters)

   Abstract Microseismicity associated with fluid pressurization in the subsurface occurs during fluid injection but can also be triggered after injection shut‐in. Understanding the extent and duration of the post‐injection microseismicity is critical to limit the risk of fluid‐induced seismicity and insure the safe utilization of the subsurface. Using theoretical and numerical techniques, we investigated how aseismic slip on a fault plane evolves and stops after a fluid pressurization event. We found that the locking mechanisms controlling the arrest of aseismic slip highly depend on the initial fault stress criticality and the pressurization duration. The absolute arrest time of fault aseismic slip after injection shut‐in is proportional to the pressurization duration and increases significantly with the initial fault stress criticality. Given that microseismicity can be triggered by aseismic slip, these results provide insights into the mechanics controlling the arrest of microseismicity after fluid pressurization as a milestone toward induced seismicity mitigation strategies. 

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