After major earthquakes, a local increase in seismic activity is generally observed. The origin of these aftershocks is still unclear, but time-dependent effects are generally invoked to explain them. In my talk, I will show that time is not the relevant variable for understanding this phenomenon. By jointly analyzing catalogs of seismic faults and sheared granular material experiments, I will show that even if these data differ by several orders of magnitude in terms of length and time scales, they can be rationalized on a single curve if we consider that the variable governing the dynamics is deformation and not time.
Accès Salle des séminaires FAST-LPTMS (Bât. 530, salle C.120, 1er)