Episodicity and Migration of Low Frequency Earthquakes modeled with Fast Fluid Pressure Transients in the Permeable Subduction Interface

Gaspard Farge (1) , Claude Jaupart (1) , Nikolai M Shapiro (2)

1 IPGP (UMR_7154) - Institut de Physique du Globe de Paris
2 ISTerre - Institut des Sciences de la Terre

• We model fluid pressure diffusion in a channel along the subduction interface in which the permeability varies through a valving mechanism • Tremor is generated as valves break open and interactions between valves through fluid pressure transients shape realistic event patterns • The input fluid flux in the fault controls seismic activity, opening possibilities to diagnose hydraulic conditions using LFE patterns

Domaines: Sciences de la Terre

Gaspard Farge, Claude Jaupart, Nikolai M Shapiro. Episodicity and Migration of Low Frequency Earthquakes modeled with Fast Fluid Pressure Transients in the Permeable Subduction Interface. Journal of Geophysical Research : Solid Earth, 2021, 126 (9), pp.e2021JB021894. ⟨10.1029/2021JB021894⟩. ⟨hal-03291591⟩