Acoustic-Friction Networks and the Evolution of Precursory Rupture   Fronts in Laboratory Earthquakes
  We show that the mesoscopic and transport characteristics of networks follow the same trends for the same type of the shear ruptures in terms of rupture speed while also comparing the results of three different friction experiments.The classified fronts obtained from a saw cut Westerly granite fault regarding friction network parameters show a clear separation into two groups indicating two different rupture fronts. With respect to the scaling of local ruptures durations with the networks parameters we show that the gap is related to the possibility of a separation between slow and regular fronts. 
H.O. Ghaffari and R.P. Young
physics.geo-ph cond-mat.mtrl-sci