Poster #144, Fault and Rupture Mechanics (FARM)
Laboratory investigation of multiple controls on fault stability and rupture dynamics
Poster Image:
Poster Presentation
2021 SCEC Annual Meeting, Poster #144, SCEC Contribution #11395 VIEW PDF
t the dependence of frictional properties on load-point velocity to explore the dynamics of frictional sliding with gradual variations of frictional properties. We use the period-multiplying and chaotic cycles that appear at the transition between stick-slip and stable sliding as a sensitive indicator of fault stability. In addition to the stiffness ratio, we find that the ratio of the parameters that describe the dependence on velocity and state constitutes another control on the stability of faulting and rupture dynamics. In nature, phenomena that occur near the parametric stability transition — creep waves, slow-slip events, slow earthquakes, period-doubling tremors — may be greatly affected by varying loading rates during the seismic cycle, which may affect the dominant healing mechanism and the resulting fault dynamics.
SHOW MORE
SHOW MORE