Institution: | Department of Earth Sciences, University of Trieste, Via E. Weiss 4, 34127 Trieste, Italy. E-mails:;; Institute of Volcanic Geology and Geochemistry, Russian Academy of Science, 9 Piip Boulevard, Petropavlovsk-Kamchatsky, 683006, Russia. E-mail:; The Abdus Salam International Centre for Theoretical Physics, SAND Group, Trieste, Italy ;Kamchatka Experimental and Methodical Seismological Department GS RAS 9 Piip Boulevard, Petropavlovsk-Kamchatsky, 683006, Russia. E-mail: |