Analisi morfometrica integrata in ambiente GIS applicata ad aree tettonicamente attive

Abstract

This paper describes a methodology of integrated analysis applied to the study of geological deformation due to recent tectonics and morphogenesis on a regional and local scale. The analysis has been carried out by integrating morphological data, morphometrical data derived by DTMs (Digital Terrain Models) processing, with literature geological and geomorphological data, aerial photo interpretation and field surveys, as well as with seismological data. The study areas that have been selected for testing our methodology are the Agri Valley (Campania-Lucania regions), hit by the strong historical earthquake of 26th December, 1857 (Imax=XI, Me=7.0); the Tammaro River basin (Campania-Molise regions), affected in historical time by the strong earthquake of 5th June, 1688 (Imax=XI, Me=6.7) and in recent time by seismic sequences of moderate energy; the Ischia Island (Thyrrenian sea - Campania region), characterized by historical and recent volcano-tectonic activity. Finally, the consistency and congruency of the obtained results have been verified in the light of a coherent model of deformation source. The results obtained in this work have showed the applicability of this methodology, so far utilized only for tectonic areas with active deformation, also to active volcanic areas, proving the advantage of such methodological approach for the assessment of geological-environmental hazard in an area