Nucleation processes and foreshocks of slow and fast laboratory earthquakes illuminated with waveform similarity measurements

David Chas Bolton, University of Texas at Austin, Austin, TX, United States, Chris Marone, Pennsylvania State University, Department of Geosciences, University Park, United States, Demian M Saffer, University of Texas at Austin, Austin, United States and Daniel T Trugman, University of Texas at Austin, Jackson School of Geosciences, Austin, United States