VIOLAY , M.

Earthquakes i.e. frictional ruptures, are commonly described by singular solutions of shear crack motions. These solutions assume a square root singularity order around the rupture tip and a constant shear stress value behind it, implying scale-independent edge-localized energy. However, recent observations of large-scale thermal weakening...

While sliding at seismic slip-rates of ∼1 m/s, natural faults undergo an abrupt decrease of shear stress called dynamic weakening. Asperity-scale (<neff = 5-40 MPa), target slip-rate (Vt = 0.1-6.5 m/s) and fluid pressure (Pf = 0-15 MPa). To account for the uncertainties of constitutive parameters, we introduce a norm-based optimization...