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 2021
Гирина О.А., Мельников Д.В., Маневич А.Г., Нуждаев А.А., Романова И.М., Лупян Е.А., Кашницкий А.В., Сорокин А.А., Крамарева Л.С. Эксплозивное извержение вулкана Безымянный 21 октября 2020 г. // Вулканизм и связанные с ним процессы. Материалы XXIV ежегодной научной конференции, посвящённой Дню вулканолога, 29-30 марта 2021 г. Петропавловск-Камчатский: ИВиС ДВО РАН. 2021. С. 29-31.
Озеров А.Ю., Гирина О.А., Мельников Д.В., Нуждаев И.А., Черкашин Р.И., Демянчук Ю.В., Цветков В.А. Вулкан Ключевской: новый побочный прорыв им. Г.С. Горшкова, 2021 г. (п-ов Камчатка) // Вестник КРАУНЦ. Серия: Науки о Земле. 2021. Вып. 49. № 1. С. 5-9. doi: 10.31431/1816-5524-2021-1-49-5-9.
Фирстов П.П., Шакирова А.А., Максимов А.П., Черных Е.В. Активизация Авачинского вулкана в 2019 г. // Вулканология и сейсмология. 2021. № 3. С. 1-15. doi: 10.31857/S0203030621030032.    Annotation
На основании изучения волновых форм и спектрального состава землетрясений, зарегистрированных в период активизации Авачинского вулкана в 2019 г., были выделены три общепринятых типа вулканических землетрясений (ВЗ): вулкано-тектонические, гибридные и длиннопериодные, а также четвертый – “особый” тип ВЗ, отличающийся особенностями волновых форм. Выделены 15 плоско-ориентированных кластеров и определены характеристики сейсмогенных площадок. Анализ сейсмических событий, зафиксированных осенью 2019 г. в Молодом конусе Авачинского вулкана, позволил предположить связь активизации с магматическими телами извержения 1991 г. в теле конуса и их взаимодействием с атмосферными осадками. Наиболее вероятной причиной световых вспышек над кратером, наблюдавшихся 8 декабря, представляется взаимодействие обогащенного водородом вулканического газа при контакте с кислородом воздуха.

Based on the study of the waveforms and spectral composition of earthquakes recorded during the activation of Avachinsky volcano in 2019, three generally accepted types of volcanic earthquakes (VE) were identified: volcano-tectonic, hybrid and long-period, as well as the fourth – a “special” type of VE, characterized by differ of waveforms. 15 plane-oriented clusters have been identified and the characteristics of seismogenic areas
have been determined. Analysis of the seismic events recorded in autumn 2019 in the Young Cone of Avachinsky Volcano suggested a connection between the activation of the 1991 eruption in the body of the cone and their interaction with atmospheric precipitation with magmatic bodies. The most likely cause of the light flashes over the crater on December 8 is the interaction of a hydrogen-rich volcanic gas in contact with atmospheric oxygen.
Фирстов П.П., Шакирова А.А., Максимов А.П., Черных Е.В. Особенности сейсмической активизации Авачинского вулкана в конце 2019 г. // Доклады РАН. Науки о Земле. 2021. Т. 497. № 2. С. 165-170. doi: 10.31857/S268673972104006X.    Annotation
Сейсмическая активизация вулкана Авачинский наблюдалась с конца октября до конца декабря 2019 г., когда в его постройке произошло 6 роевых последовательностей вулканических землетрясений различных типов. В роевых последовательностях были выделены 15 плоско-ориентированных кластеров и определены характеристики их сейсмогенных площадок. Комплексный анализ сейсмических событий указывает на то, что активизация Авачинского вулкана в конце 2019 г. возникла в результате взаимодействия метеорных вод с магматическими телами в теле конуса, возникших в результате эффузивного извержения в 1991 г.

Seismic activation of Avachinsky volcano was observed from late October to late December 2019, when 6 swarm sequences of volcanic earthquakes of various types occurred in its construction. In the swarm sequences, 15 plane-oriented clusters were identified and the characteristics of their seismogenic areas were determined. A comprehensive analysis of seismic events indicates that the activation of Avachinsky volcano at the end of 2019 arose because of the interaction of meteoric waters with magmatic bodies in the body of the cone, which arose during an effusive eruption in 1991.
 2020
Belousov Vladimir, Belousova Irina, Khubaeva Olga Long-lived Volcanic Centers of Kamchatka Geothermal Areas // World Geothermal Congress 2020+1. Reykjavik, Iceland: 2020. С. 1-8.    Annotation
The current problems of hydrothermal processes and ore-forming systems are volcanic heat sources and mechanisms of heat
transfer. In Pauzhetsky, Semyachik and Mutnovsky geothermal areas in Kamchatka, active long-lived volcanic centers have been
studied, with which high-temperature hydrothermal systems are associated. In the Banno-Paratunsky geothermal area the Paleogene
and Neogene long-lived volcanic centers were identified, with which low-temperature hydrothermal systems are associated. The
geological history of the long-lived volcanic centers development is characterized by changes in their structure as a result of
hydrothermal-magmatic activity. These changes are manifested in the generation and evolution of magma chambers in the mantle
and in the Earth’s crust. Basalt melts of the mantle chambers transport the deep heat to the Earth’s surface through plane magmatic
channels without significant losses. The heat flow of these volcanic centers is short-lived and is characterized by a significant
capacity of ~8,000 kcal/km2s. The long-lived volcanic centers are characterized by the presence of magma chambers in the Earth's
crust. They shield the part of the mantle heat flow. Their thermal capacity on the Earth's surface is estimated from 1000 kcal/km2s
to 5000 kcal/km2s. It is assumed that a significant amount of thermal energy is retained in the long-lived volcanic centers. It is
spent on formation and activity of the chambers as well as the convective hydrothermal ore-forming systems. The evolution of such
centers is accompanied by the formation of complexes of metamorphic rocks which interaction with high-temperature mantle melts
is accompanied by redox reactions like combustion. As a result of these reactions, thermal energy is produced in such magma
chambers. A long-lived jet magmatic system is formed, and it provides the transfer of mantle heat. Heat transfer in the system is
accompanied by minimization of heat losses, accumulation of heat and its additional generation which is necessary for the heat
transfer in the structures with low thermal conductivity. The formation, evolution and extinction of magma chambers and reservoirs
in such heat-conducting structures are controlled by the thermophysical properties of the rocks, their geological structure and redox processes in them.
Bergal-Kuvikas Olga, Bindeman Ilya, Skorkina Anna, Khubaeva Olga Origin of monogenetic volcanoes in Malko-Petropavlovsk zone of the transverse dislocation (Kamchatka): geological setting, geophysical parameters and geochemical data // Abstract volume of the 8th International Maar Conference. Petropavlovsk-Kamchatsky: IVS FEB RAS. 2020. P. 37-38.
Girina O.A., Gorbach N.V., Davydova V.O., Melnikov D.V., Manevich T.M, Manevich A.G., Demyanchuk Yu.V. The 15 March 2019 Bezymianny Volcano Explosive Eruption and Its Products // Journal of Volcanology and Seismology. 2020. Vol. 14. № 6. P. 394-409. https://doi.org/10.1134/S0742046320060032.    Annotation
Bezymianny Volcano is one of the most active volcanoes in Kamchatka and in the world. This paper describes the preparation, behavior, products, dynamics, and the geological effect of the March 15, 2019 explosive eruption of the volcano, which was predicted 6.5 h before it began. The sequence of eruptive events was analyzed using data provided by video and satellite-based monitoring of the volcano; the quantitative characteristics for the distribution of pyroclastic deposits were obtained in the information system “Remote Monitoring of Activity of Volcanoes in Kamchatka and the Kurile Islands”. The explosions lifted ash to heights of 15 km above sea level (up to 12 km above the volcano), the eruptive cloud was moving northeastward and east from the volcano, the main ashfall area was 210 400 km2, including 15 000 km2 on land. Apart from tephra, the eruption produced pyroclastic flows and pyroclastic surges covering an area of 30 km2. The total volume of explosive products is estimated as 0.1–0.2 km3. The eruptive rocks are calc-alkaline moderate-K basaltic andesites (SiO2 = 54.84–56.29 wt %), they are the most mafic among all rocks of the current Bezymianny eruption cycle.
Girina O.A., Ladygin V.М. Monogenetic cones of Klyuchevskaya group of volcanoes (Kamchatka, Russia) // Abstract volume of the 8th International Maar Conference. Petropavlovsk-Kamchatsky: IVS FEB RAS. 2020. P. 56-57.
Girina O.A., Melnikov D.V., Manevich A.G., Nuzhdaev A.A., Petrova E.G. The 2019 Activity of Kamchatka and Kurile Islands Volcanoes and Danger to Aviation (oral report) // JpGU - AGU Joint Meeting 2020: Virtual. 12-16 July, 2020, Japan, Tokyo. 2020.
Girina O.A., Melnikov D.V., Manevich A.G., Nuzhdaev A.A., Petrova E.G. The 2019 Activity of Kamchatka and Kurile Islands Volcanoes and Danger to Aviation // Japan Geoscience Union Meeting 2020. Japan, Chiba: JpGU. 2020. № HDS10-P01.



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