Where did the time go? Friction evolves with slip following large velocity steps, normal stress steps, and (?) during long holds

Pathikrit Bhattacharya, Princeton University, Princeton, United States, Allan M Rubin, Princeton University, Princeton, NJ, United States, Terry E Tullis, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States, Keishi Okazaki, Brown University, Providence, United States and Nicholas M Beeler, USGS Cascades Volcano Observatory, Vancouver, United States