Assessment of Earthquake‐Induced Landslide Hazard in Greece: From Arias Intensity to Spatial Distribution of Slope Resistance Demand

The earthquake-induced landslide hazard in Greece is evaluated by of a parametric time probabilistic approach. First, by taking into account the of seismicity affecting Greece, we calculated occurrence probabilities different levels of seismic shaking expressed in terms of Arias intensity for a time of 50 yrs. Then, by utilizing the linkage of Newmark displacement with Arias and critical acceleration, we mapped the spatial distribution of the slope demand that imply a 10% probability that displacement will exceed critical for potential seismic triggering of incoherent and coherent landslides. The results suggest that the areas of western Greece and the broader region of the of Corinth are the most exposed to conditions of seismic triggering of both kinds landslides. The derived slope strength demand maps could provide the basis for the of whether particular slopes have a significant failure probability by comparing estimated strength demand with the actual critical acceleration values calculated slope material properties and slope angle. We exemplified this approach a coastal area of the western Gulf of Corinth, where, by considering situations expected dry and wet periods, we also demonstrated that earthquake effects on slope depend on the season of earthquake occurrence.