1. Physics of Geological Processes, The Njord Centre, Department of Geosciences University of Oslo Oslo Norway
2. Department of Geology University of Otago Dunedin New Zealand
3. Geosciences Institute Goethe University Frankfurt Frankfurt Germany
4. Istituto Nazionale di Geofisica e Vulcanologia Rome Italy
5. Dipartimento di Geoscienze Università degli Studi di Padova Padova Italy