Seismogenic and tremorgenic slow slip near the stability transition of frictional sliding

Slow-slip events and tremors occur below the seismogenic zone of major plate boundaries. While physics aseismic slow-slip is relatively well understood, mechanics slow slip remains elusive because conditions leading to or fast ruptures are thought be mutually exclusive. Here, we explore fault dynamics in parametric space frictional show that natural behavior homogeneous faults, as long velocity dependence approaches neutral with a small characteristic nucleation size. Tremors can originate from rapid bursts earthquakes triggered rupture spreads over small-scale asperities. The near velocity-neutral explain underlying collocated commonly found zone. presence material heterogeneity may spatio-temporal clustering migration features tremor activity.