[1] Univ Milano Bicocca, Dept Earth & Environm Sci, Piazza Sci 1-4, I-20126 Milan, Italy
[2] CRUST Interuniv Ctr 3D Seismotecton Terr Applicat, I-66100 Chieti, Italy
[3] INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy
[4] Natl & Kapodistrian Univ Athens, Dept Geol & Geoenvironm, Athens 15784, Greece
[5] Univ Portsmouth, Sch Environm Geog & Geosci, Portsmouth PL01 3QL, Hants, England
[6] Insubria Univ, Dept Human & Innovat Sci, Via S Abbondio 12, I-22100 Como, Italy
[7] INAF Osservatorio Astrofis Catania, Via Santa Sofia 78, I-95123 Catania, Italy
[8] Ist Nazl Geofis & Vulcanol, Osservatorio Etneo, Piazza Roma 2, I-95125 Catania, Italy
[9] Univ Clermont Auvergne, CNRS, UMR6524,IRD, Observ Phys Globed & Clermont,Lab Magmas & Volcan, F-63170 Aubiere, France
[10] Univ Portsmouth, Sch Creat Technol, Portsmouth PO1 2DJ, Hants, England
[11] Arctic Univ Tromso, Ctr Arctic Gas Hydrate Environm & Climate, CAGE, N-9019 Tromso, Norway
[12] Univ Milano Bicocca, Dept Informat Syst & Commun, Viale Sarca 336-14, I-20126 Milan, Italy
[13] Konsulent Stiller Reeve, N-5281 Valestrandsfossen, Norway
[14] Univ Bergen, Ctr Climate & Energy Transformat, N-5020 Bergen, Norway