The identification and diagnostics of active and potentially active volcanic features in the Kuril-Kamchatka island arc and the Commander Islands link of the Aleutian arc |
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| Authors: | I V Melekestsev |
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| Institution: | 1. Institute of Volcanology and Seismology, Far East Division, Russian Academy of Sciences, Petropavlovsk-Kamchatskii, 683006, Russia
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| Abstract: | 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 Commander Islands link of the Aleutian island arc, as well as the
condition of this region as of late 2007. We have identified and examined three periods in the research of active and potentially
active volcanic features in the region: the early (1697–1934), the new (1935–1962), and the most recent, still in progress
(1963 until today). We provide a new definition of the term “active volcano,” which is scientifically well-grounded, for the
first time here. We present modified (compared with those available until now) catalogs of active and potentially active volcanic
forms in Kamchatka and the Kuril Islands. For typical multieruption volcanoes now in phase I (the active) and II (the passive)
of their evolution, we provide long-term forecasts of the character and parameters of future eruptions and the associated
volcanic hazard. |
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