1Ponomarev G.P., 1Rashidov V.A., 1Aprelkov S.E., 2Delemen’ I.F., 3Popruzhenko S.V., 4Volynets G.O.,
3Novakov P.M., 2Philosofova T.M., 5Mel’nikov D.V., 1Dirksen O.V., 5Pavlukov V.K.

1Institute of Volcanic Geology and Geochemistry FED RAS, Petropavlovsk-Kamchatsky, Piip Blvd., 9, 683006
2Institute of Volcanology FED RAS, Petropavlovsk-Kamchatsky, Piip Blvd., 9, 683006
3Kamchatprirodresurs, Petropavlovsk-Kamchatsky, Piip Blvd., 9, 683006
4Tourist Agency “GEK”, Petropavlovsk-Kamchatsky, Piip Blvd., 4, 683006
5Kamchatkan State Pedagogical University, Petropavlovsk-Kamchatsky, Pogranichnaya, 4, 683032

A brief review of various relationships connecting seismofocal zone and volcanic belts within the Kurile island-arc system is represented. Possibilities of manifestation of the submarine volcanic activity and associated relief of the hydrothermal systems on the Pacific shelf of the South Kamchatka are considered. We propose to consider Malko-Petropavlovsk zone of transverse dislocations as seismogenerating one. The phenomenon of ultraspeed deformations