More Like this

1. Effect of Field Drainage on Seismic Pore Pressure Buildup and Kσ under High Overburden Pressure

   https://doi.org/10.1061/(ASCE)GT.1943-5606.0002536  

   Ni, M.; Abdoun, T.; Dobry, R.; El-Sekelly, W. (September 2021, Journal of Geotechnical and Geoenvironmental Engineering)
2. Effects of pore fluid pressure on slip behaviors: An experimental study: FLUID PRESSURE AND SLIP BEHAVIORS

   https://doi.org/10.1002/grl.50543  

   Ougier-Simonin, A.; Zhu, W. (June 2013, Geophysical Research Letters)
3. 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)
4. Pore Pressure Diffusion and Onset of Induced Seismicity

   https://doi.org/10.1029/2022JB026012  

   Stokes, Scott M.; Ge, Shemin; Brown, Megan R.; Menezes, Elizabeth A.; Sheehan, Anne F.; Tiampo, Kristy F. (March 2023, Journal of Geophysical Research: Solid Earth)
5. Partial ruptures governed by the complex interplay between geodetic slip deficit, rigidity, and pore fluid pressure in 3D Cascadia dynamic rupture simulations

   https://doi.org/10.26443/seismica.v2i4.1427  

   Glehman, Jonatan; Gabriel, Alice; Ulrich, Thomas; Ramos, Marlon; Huang, Yihe; Lindsey, Eric (September 2023, Seismica)

   Physics-based dynamic rupture simulations are valuable for assessing the seismic hazard in the Cascadia subduction zone (CSZ), but require assumptions about fault stress and material properties. Geodetic slip deficit models (SDMs) may provide information about the initial stresses governing megathrust earthquake dynamics. We present a unified workflow linking SDMs to 3D dynamic rupture simulations, and 22 rupture scenarios to unravel the dynamic trade-offs of assumptions for SDMs, rigidity, and pore fluid pressure. We find that margin-wide rupture, an earthquake that ruptures the entire length of the plate boundary, requires a large slip deficit in the central CSZ. Comparisons between Gaussian and smoother, shallow-coupled SDMs show significant differences in stress distributions and rupture dynamics. Variations in depth-dependent rigidity cause competing effects, particularly in the near-trench region. Higher overall rigidity can increase fault slip but also result in lower initial shear stresses, inhibiting slip. The state of pore fluid pressure is crucial in balancing SDM-informed initial shear stresses with realistic dynamic rupture processes, especially assuming small recurrence time scaling factors. This study highlights the importance of self-consistent assumptions for rigidity and initial stresses between geodetic, structural, and dynamic rupture models, providing a foundation for future simulations of ground motions and tsunami generation. 

   more » « less