1. Department of Earth Sciences, University of Pisa, Pisa, Italy
2. Department of Earth Sciences, University of Florence, Florence, Italy
3. Escuela Centroamericana de Geología, Universidad de Costa Rica, San José, Costa Rica
4. Department of Mathematics and Geosciences, University of Trieste, Trieste, Italy
5. Geophysics Division, National Institute of Oceanography and Applied Geophysics–OGS, Trieste, Italy
6. Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy
7. Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), UiT–The Arctic University of Norway, Tromsø, Norway
8. Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Parma, Italy