Fault strength is of key importance to geological and geophysical processes over a vast range of scales, from the microscopic interactions at asperities to the macroscopic behavior of plates. In this dissertation, I present ...

Slow slip and tectonic tremor in subduction zones take place at depths (~20 - 50 km) where there is abundant evidence for distributed shear over broad zones (~10 - 10^3 m) composed of rocks with marked differences in ...

Ice streams transport the majority of the ice lost to the ocean from the Antarctic Ice Sheet. In many cases these fast-flowing streams are bordered by nearly stagnant ice ridges that supply cold ice through lateral advection. ...