1. Istituto Nazionale di Geofisica e Vulcanologia Rome Italy
2. Scripps Institution of Oceanography La Jolla CA USA
3. Observatorio Vulcanológico y Sismológico de Universidad Nacional de Costa Rica Heredia Costa Rica
4. Department of Geological Sciences Chungnam National University Daejeon Korea
5. GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany
6. Kiel University Kiel Germany