Pore pressure diffusion and the hydrologic response of nearly saturated, thin landslide deposits to rainfall

Previous workers have correlated slope failures during rainstorms with rainfall intensity, rainfall duration, and seasonal antecedent rainfall. This note shows how such relationships can be interpreted using a periodic steady-state solution to the well-known linear pressure diffusion equation. The effects of storm frequency and magnitude are also successfully quantified using dimensionless attenuation factors and lag times. -from Author