The velocity structure beneath the Avacha and Koryaksky volcanoes in Kamchatka

Evgenii Gordeev1, Ivan Koulakov2, Natalia Bushenkova2 and Sergey Senyukov3, (1)Institute of Volcanology and Seismology, Petropavlovsk Kamcha, Russia, (2)Trofimuk Institute of Petrolium Geology and Geophysics SB RAS, Novosibirsk, Russia, (3)Kamchatkan Branch of Geophysical Survey RAS, Petropavlovsk-Kamchatsky, Russia