Daniela Tarallo (*), Antonio Rapolla (*,**), Silvio Di Nocera (*), Fabio Matano (*) & Valeria Paoletti (*)
(*) Department of Earth Sciences, University of Naples "Federico II". E-mail: daniela.tarallo@unina.it
(**) University Centre for Research on Major Hazards, University of Salerno and "Federico II" University of Naples.