1. Division of Marine Geology and Geophysics, RSMAS; University of Miami; Coral Gables Florida USA
2. Now at School of Earth and Environment; University of Leeds; Leeds UK
3. Hawaiian Volcano Observatory; U.S. Geological Survey; Hawaii USA
4. Sezione di Catania, Osservatorio Etneo; Istituto Nazionale di Geofisica e Vulcanologia; Catania Italy
5. UNAVCO; Boulder Colorado USA
6. Department of Earth Sciences, Sapienza; University of Rome; Rome Italy
7. Volcano Science Center; U.S. Geological Survey; Menlo Park California USA