Geomorphological contribution to Seismic Risk assessment

Abstract

 The author analyses the contributions provided by Geomorphology in studies of the assessment of Seismic Risk: this is defined as a function of the seismic hazard, of the seismic susceptibility, and of the vulnerability. The geomorphological studies applicable to seismic risk assessment can be divided into two sectors: a) morpho-neotectonic investigations conducted to identify active tectonic structures; b) geomorphological and morphometric analyses aimed at identifying the particular situations that amplify or reduce seismic susceptibility. The morpho-neotectonic studies lead to the identification, selection and classification of the lineaments that can be linked with active tectonic structures. The most important geomorphological factors that can condition seismic susceptibility are: slope angle, debris, morphology, degradational slopes, palaeo-landslides and underground cavities.