Laboratory investigation into foreshock sequences and their relation to nucleation processes on a frictional fault
Tuesday, 16 December 2014
Foreshock sequences have been observed to occur before large earthquakes. They may provide short-term information regarding the timing of the impending event. Our current understanding of stress states encouraging foreshock generation is limited. Geodetic data from Tohoku and north Chile sequences indicate that foreshocks occur on the frictionally locked section of the fault [Brodsky and Lay, 2014]. McLaskey et al.  have shown that foreshocks can be simulated on frictional interfaces in the laboratory and demonstrate physics that scale directly to large regional earthquakes [McLaskey et al., 2014].