The Identification and Diagnostics of Active and PotentiallyActive Volcanic Features in the Kuril-Kamchatka Island Arcand the Commander Islands Link of the Aleutian Arc

摘要

We consider the identification and diagnostics of active and potentially active volcanic features(regional zones of cinder cones, fields sheet volcanism, fields of concentrated multivent extrusive volcanism,calderas, and underwater eruption centers in the sea) in the Kuril-Kamchatka island arc and in the CommanderIslands link of the Aleutian island arc, as well as the condition of this region as of late 2007. We have identifiedand examined three periods in the research of active and potentially active volcanic features in the region: theearly (1697-1934), the new (1935-1962), and the most recent, still in progress (1963 until today). We providea new definition of the term "active volcano," which is scientifically well-grounded, for the first time here. Wepresent modified (compared with those available until now) catalogs of active and potentially active volcanicforms in Kamchatka and the Kuril Islands. For typical multieruption volcanoes now in phase I (the active) andII (the passive) of their evolution, we provide long-term forecasts of the character and parameters of future erup-tions and the associated volcanic hazard.