The hysteretic response of a shallow pyroclastic deposit

Abstract. In the last decades, in Campania (southern Italy), steep slopes mantled by loose air-fall pyroclastic soils have been seat of shallow, fast, rainfall-induced landslides. The occurrence such events has result combination critical rainstorms and unfavourable initial conditions determined antecedent infiltration, evaporation, drainage processes. order to understand nature phenomena at hand clarify role all influencing factors, an automatic monitoring station installed area already subject a recent killer flowslide (December, 1999). paper reports data collected 2011 about volumetric water content suction (used investigate soil retention features) rainfall depth temperature (providing boundary conditions). particular, installation same depths tensiometers time domain reflectometry (TDR) sensors allowed us recognise hysteretic wetting drying response weather forcing its influence on slope stability conditions. reported are freely available https://doi.org/10.5281/zenodo.4281166 (Comegna et al., 2020).