Estimating Fault Friction From Seismic Signals in the Laboratory

@article{RouetLeduc2017EstimatingFF,
  title={Estimating Fault Friction From Seismic Signals in the Laboratory},
  author={Bertrand Philippe Gerard Rouet-Leduc and Claudia Hulbert and David Chas Bolton and Christopher Ren and Jacques Rivi{\`e}re and Chris Marone and Robert A. Guyer and Paul A. Johnson},
  journal={Geophysical Research Letters},
  year={2017},
  volume={45},
  pages={1321 - 1329}
}
Nearly all aspects of earthquake rupture are controlled by the friction along the fault that progressively increases with tectonic forcing but in general cannot be directly measured. We show that fault friction can be determined at any time, from the continuous seismic signal. In a classic laboratory experiment of repeating earthquakes, we find that the seismic signal follows a specific pattern with respect to fault friction, allowing us to determine the fault's position within its failure… 

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