ABSTRACT
Earthquake-induced landslides are serious damaging geo-hazards. Therefore it is essential to include their effects in the seismic risk assessment. The approach proposed by this study aims to perform a large-scale risk assessment by computing the permanent sliding displacement. The estimation of the losses requires three main components. The first is the calculation of the ground motion intensity measures using the scenario-based hazard calculator of the OpenQuake-engine, supported by GEM Foundation. The second component is represented by an exposure model, which describes the value, vulnerability class and the spatial distribution of the elements. The final part comprises the vulnerability function that establishes the distribution of loss ratio for a range of hazard intensities. The study presented herein indicates considerable variability in the loss estimates due to the input parameters. These issues are investigated using the Metropolitan Area of Lisbon and Santarem district (Portugal) as study areas.
