Numerical Modeling of the 2014 Oso, Washington, Landslide

Explore a detailed numerical simulation of the devastating 2014 Oso landslide in Washington state through this 21-minute conference talk from the AGU Fall Meeting. Dive into the D-Claw numerical model, which simulates landslide motion from initiation to deposition using a system of partial differential equations. Examine how the model incorporates state-dependent dilatancy and its effects on solid volume fraction and basal pore-fluid pressure. Compare alternative scenarios with varying initial solid volume fractions and their impact on landslide behavior. Gain insights into the factors that may have contributed to the catastrophic high-speed runout of the Oso event, including the potential role of prior slope deformation. Understand the behavioral bifurcation highly sensitive to initial conditions and its implications for predicting landslide outcomes.