rocks (Acri, Calabria, Italy). O. Terranova, L. Antronico & G. Gullà . CNR-IRPI Sezione di Cosenza, Rende, Cosenza, ltaly. ABSTRACT: The recent activity ofthe ...
Pluviometrical events and slope stability on weathered and degraded rocks (Acri, Calabria, Italy) O. Terranova, L. Antronico & G. Gullà CNR-IRPI Sezione di Cosenza, Rende, Cosenza, ltaly
ABSTRACT: The recent activity ofthe "Serra di Buda" landslide near the town of Acri suggested to verify and . ilnprove a methodology to characterise rainfalls which could trigger slope instabilities. The landslide, already active in the past, involves weathered ami/or degraded gneissic and granitic rocks. An historical research allowed · · tf> individuate many dates concerning slope instabiliti es induced by rainfalls near Acri. The study used different ~ydrological analysis techniques to individuate pluviometrical scenarios of landslides with shallow, medium 4eep and deep failure surface: the first ten critic cases were individuated and compared with historical dates for éàch hydrological analysis technique using daily rainfalls. The historical research has been completed by the . geòmorphological characterisation ofthe landslides near Acri and repeating the comparisons. This study permits to individuate the periods in which the historical research could be improved and the values of the parameters able to characterise pluviometrical instability scenarios. ;.\'.
the winter 1998-1999 near the town of Acri Southern Italy) a wide part of slope, placed a Iocality called Serra di Buda, turned instable compelled the competent Authorities to close an •+•"'"'"'.r+"'"T State road to the traffic (Sorriso-Valvo et al. IJLUH.l> in an organic way (Gullà et al. 2001, Gullà 2002). results we obtained are relative to landslides :ec
