Features of the dynamics of volcanic eruptions for the first time are explained as a consequence of the properties of high-temperature phases of water and their transitions. Some properties of water in supercritical (fluid) condition are given. The latter determine the nature of the relationship between water and melt in the volcanic process, which in turn explains the explosions of different power, the rapidity of scorching clouds, the transfer of gases to the foot of volcanoes, breakouts and landslides on the slopes, the occurrence of ash, pumice, pseudoliquefied mass, as well as possibly ignimbrits and volcanic glass. It shows the impossibility of penetration of cold water into the active volcanic channel, as well as their high (before the change of phase) heating in the conditions of the crust.

The paper presents data on specified northern boundary of the Holocene volcanic activity in Kamchatka. This boundary is located 80 km to the north for the frontal volcanic zone and 180 km to the northwest from Sheveluch Volcano for the zone of the Sredinny Range. For the first time numerous evidence for the Holocene volcanic activity within the Kamchatkan zones with no deep seismicity and located to the north from the Aleutian transform fault were detected, studied and dated using geologic methods and isotope geochemistry. Radiocarbon age for the eruptions was estimated.

Выполнены морфоструктурные, геологические, геофизические и газогеохимические исследования на восточном склоне хребта Вернадского, прилегающем к г. Северо-Курильску (о. Парамушир). Показано строение участков локализации близповерхностных и глубинных термальных вод. Полученные данные имеют принципиальное значение для создания концептуальной и разведочной моделей Северо-Курильского геотермального месторождения и понимания механизмов формирования современной рудной минерализации в недрах гидротермально-магматической конвективной системы.