[1] Natl & Kapodistrian Univ Athens, Dept Geol & Geoenvironm, Div Geophys & Geotherm, Athens 15772, Greece
[2] Natl Observ Athens, Inst Geodynam, Athens 11810, Greece
[3] Univ G Annunzioof Chieti Pescara, Dept Engn & Geol, I-66100 Chieti, Pescara, Italy
[4] PACE Geosci, I-66100 Chieti, Italy