Effective Fault Friction and Seismic Nucleation Phase : Scale-dependent or Non-linear Friction ?

@inproceedings{Vilotte2003EffectiveFF,
  title={Effective Fault Friction and Seismic Nucleation Phase : Scale-dependent or Non-linear Friction ?},
  author={J.-P. Vilotte},
  year={2003}
}
We show how fault friction properties can be retrieved from the shape of the gradual onset of some seismograms. Based on a mechanical model, we derive a method to estimate the slip weakening rate W from an exponential fit to the seismic nucleation phase. Clues on fault zone structure and state of stress can be additionnaly obtained in the same process. The basic ingredients of the model are: (1) linear slip weakening friction on a planar fault, (2) a non uniform, locally peaked, prestress and… CONTINUE READING