Methodology for assessing rockfall susceptibility within the ambit of Civil Protection: The SAFETY Project

The mission of the SAFETY European project is to provide to Civil Protection Authorities (CPA´s) the capability of periodically evaluating and assessing the potential impact of geohaz-ards on prone sites, and specifically rockfalls. We present the methodology applied in a strategic road (GC-200) located in Gran Canaria (Canary Islands, Spain). We have exploited STONE [1], a GIS based rockfall simulation software which computes 2D and 3D rockfall trajectories starting from the identification of the sources areas and maps of the dynamic rolling friction coefficient and of the normal and tangential energy restitution coefficients. The appropriate identification of these parameters determines the accuracy of the simulation. We have devel-oped a method to calibrate and validate STONE in a volcanic context for the first time, to pro-vide to the Canarian CPA a reliable tool to assess hazard posed by rockfall at regional scale, which could be later applied in any island of the archipelago.Grant numbers : SAFETY project