The paper provides results from application of designed modern computer techniques for interpretation of materials from complex geophysical investigation of submarine volcanoes 2.7 and 2.8, which are located west of the south-western coast of Onekotan Island in the Kurile island arc. The research resulted in estimation of rock magnetic properties in natural deposits and revealed that the south-western flanks of submarine volcano 2.8 are the most magnetized with their productive magnetization of about 2 A/m. The authors suggested that the feeding channels of volcano 2.7 stretch southwest, while the feeding channels of volcano 2.8 stretch subverticaly, southwest and southeast. A peripheral magma chamber of the volcano was revealed at the depth of about 650 m.

During the voyages of R\V Vulkanolog in the eighties of the last century the kamchatkan scientists studied 17 geophysical profiles (about 1100 route kilometres) within the submarine Shokalsky Ridge. The investigation showed that the Shokalsky Ridge is comprised of 4 large volcanic massives. Numerous faults were revealed within the ridge area, including those with traces of recent activity. Shift amplitude along some faults may be as long as several hundreds of meters. Canyons that split the Shokalsky Ridge are chiefly confined to the cross keystone faults.

Во время полевых работ были исследованы базальты Толбачинского дола и их магнитные свойства. По химическому и петрофизическому составу породы Толбачинского дола относятся к магнезиальным (например, прорывов 1941 г. и 1975 г.) и глиноземистым базальтам (например, конуса Клешня, даек и поля Магуськина). Выяснено, что для пород Толбачинского дола величина магнитной восприимчивости глиноземистых базальтов ниже, чем магнезиальных.