Shallow instabilities for sliding flow: regional influence and area affects.

The term soil slip is widely used in world literature to indicate fast landslide that involve soil covers. Shallow landslides like soil slips happen in almost every Country in the World and affect different geo-environmental contexts. Generally the extreme danger of soil slip is underlined and related to its extreme rate and its high distribution density on the affected slopes. Calabria region (Southern Italy) results to be affected by this kind of instability, they get triggered by particularly intense rainfall events involving almost all the cropping rocks. This susceptibility, recently well underlined by soil slips triggered during the winter 2002-2003, becomes firmer in various events of the recent past (September 2000, October 1951 and 1953). For this reason a study has been carried out to define, in an organic way, the geo-environmental characteristics of some areas affected by soil slips in Calabria.