Andrea Bloise (*), Elena Belluso (**,°,+), Teresa Critelli (*), Manuela Catalano (***), Carmine Apollaro (*), Domenico Miriello (*) & Eugenio Barrese (*)
(*) Department of Earth Sciences, University of Calabria.
(**) Department of Earth Sciences, University of Torino.
(***) Department of Physic, University of Calabria.
(°) Institute of Geosciences and Earth Resources, CNR, Torino section, Torino.
(+) NIS Centre of Excellence, University of Torino.