Susceptibilidad a movimientos de ladera inducidos por terremotos en Alcoy (Alicante) y sectores adyacentes

Abstract

We present an approach developed to estimate the seismically-induced landslide susceptibility of the Alcoy (Alicante) area. It combines the Newmark's method of evaluation of slope stability with a seismic hazard study o f the region through a GIS. The obtained results show that the distribution of susceptible areas is closely related to the position of river valleys, specially the Molinar and Serpis rivers. Due to Alcoy city has developed around these rivers, some zones of the city show moderate to high susceptibility, which is in accordance with historical data which describe the occurrence of seismically-induced landslides along these valleys. The results emphasize areas of susceptibility that actually are being occupied, thus pointing out the necessity of incorporating this information into the land use planning.