1. Dipartimento di Scienze della Terra Università di Pisa Pisa Italy
2. Dipartimento di Scienze della Terra Università degli Studi di Firenze Firenze Italy
3. Department of Surveying Engineering Guangdong University of Technology Panyu District, Guangzhou China
4. Institut de Physique du Globe de Strasbourg, Université de Strasbourg/EOST CNRS Strasbourg Cedex France
5. Sorbonne Université CNRS Institute des Sciences de la Terre de Paris, ISTeP Paris France
6. CNR Consiglio Nazionale delle Ricerche Istituto di Geoscienze e Georisorse, U.O. Firenze Firenze Italy
7. Institute of Geophysics, Space Science and Astronomy Addis Ababa University Addis Ababa Ethiopia
8. School of Ocean and Earth Science University of Southampton Southampton UK