1. Consiglio Nazionale delle Ricerche Istituto di Geoscienze e Georisorse, Sede Secondaria di Firenze Florence Italy
2. Dipartimento di Scienze della Terra Università degli Studi di Firenze Florence Italy
3. Bullard Laboratories University of Cambridge Cambridge UK
4. School of Ocean and Earth Science University of Southampton Southampton UK
5. School of Applied Natural Sciences, Department of Applied Geology Adama Science and Technology University Adama Ethiopia
6. Institute of Geosciences Potsdam University Potsdam Germany
7. School of Earth Sciences Addis Ababa University Addis Ababa Ethiopia
8. Institute for Geophysics Space Science and Astronomy Addis Ababa University Addis Ababa Ethiopia