1. Research Assistant, Dept. of Structural, Building and Geotechnical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy (corresponding author).
2. Research Associate, Dept. of Structural, Building and Geotechnical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
3. Research Associate, Dept. of Earth Sciences, Univ. degli Studi di Firenze, Via La Pira 4, 50121 Firenze, Italy.
4. Associate Professor, Dept. of Electrical and Information Engineering Guglielmo Marconi, Univ. di Bologna, Viale del Risorgimento 2, 40139 Bologna, Italy.
5. Research Assistant, Dept. of Earth Sciences, Univ. degli Studi di Firenze, Via La Pira 4, 50121 Firenze, Italy.
6. Professor, Dept. of Earth Sciences, Univ. degli Studi di Firenze, Via La Pira 4, 50121 Firenze, Italy.