Mapping slope instability round factors in the national Park of Gran Sasso-Monti della Laga (Abruzzo, Central Italy) : results and perspectives

The national Park of Gran Sasso-Monti della Laga (Abruzzo, Central Italy) is representative of a mountainous Mediterranean environment, with a range of elevation from 800 to 2900 meters above sea level and commonly occuring landslides, particularly in the northern belt at the Park. The research carried out on a pilot area of the Park was addressed to obtain a small scale mapping of both distribution and intensity of the slope instability factors. this was accomplished by considering the percentage occurence of some instability factors, as the ratio of friction-angle to layering dip-angle less than 1, and the occurence of morphological signs of instability as active talus. - (NF).