ABSTRACT
In contrast to deterministic analyses, expressing slope instability within a probabilistic or stochastic framework may involve the use of all data over a regional scale, especially geotechnical parameters, being defined as probability density functions. Probabilistic analyses are thus gaining more attention in the hazard assessment of seismic landslides, due to modeling uncertainties and spatial variability of geological, geotechnical, geomorphological and seismological parameters. In contrast to deterministic analyses, expressing slope instability within a probabilistic or stochastic framework may involve the use of all data over a regional scale, especially geotechnical parameters, being defined as probability density functions. A Newmark displacement method is often used to derive indications about slope instability due to earthquake shaking. The Newmark sliding block model is widely used for estimation of permanent displacement of slopes in earthquakes. The most widespread types of landslides induced by the earthquake were highly disrupted, relatively shallow slides and soil flows.
