Exhumed fault zones offer insights into deformation processes associated with earthquakes
in unparalleled spatial resolution; however it can be difficult to differentiate seismic slip from …

Earth's surface is composed of a staggering diversity of particulate–fluid mixtures: dry to wet,
dilute to dense, colloidal to granular and attractive to repulsive particles. This material variety …

Dynamic triggering of earthquakes by seismic waves is a robustly observed phenomenon
with well-documented examples from over 30 major earthquakes. We are now in a position …

Mid-crustal deformation is classically characterized by the transition from ductile to brittle
deformation defining the frictional-to-viscous transition (FVT). Here we investigate an …

To explore the causes of history‐dependent sediment transport in rivers, we use a 19‐year
record of coarse sediment transport from a steep channel in Switzerland. We observe a …

Bed load sediment transport is typically formulated as a nonlinear function of the shear
stress exerted on the bed in excess of a critical value. However, due to the inherent spatial …

The macroscopic friction of particulate materials often weakens as the flow rate is increased,
leading to potentially disastrous intermittent phenomena including earthquakes and …

Rate‐and state‐dependent friction (RSF) equations are commonly used to describe the time‐
dependent frictional response of fault gouge to perturbations in sliding velocity. Among the …

Rainfall-induced flowslides in soil slopes remain one of the most destructive natural
hazards. To prevent and mitigate the hazard requires a good understanding of soil behavior …

Determining the shear‐velocity dependence of dry granular friction can provide insight into
the controlling variables in a dry granular friction law. Some laboratories believe that the …