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Горбач Н.В., Рогозин А.Н. Особенности геологического строения и состава пород вулкана Кроноцкого – крупнейшего стратовулкана фронтальной зоны Восточного вулканического пояса Камчатки // Вулканология и сейсмология. 2023. № 5. С. 26-45. doi: 10.1134/S074204632370029X.
The 2020–2022 field works gave results that were used as a basis for describing the geological structure and whole-rock compositions for Kronotsky Volcano, one of the least known eruption centers in the East Volcanic Belt (EVB), Kamchatka. The stratovolcano edifice was estimated to be 350 km3 in volume, which is much above the respective figures for the other stratovolcanoes in the EVB frontal zone. The rocks are low-K and high-Fe tholeiitic basalts and basaltic andesites (SiO2 = 47.04‒53.15 wt %; K2O = 0.24‒0.65 wt %; FeO*/MgO = 1.2‒2.89). The basalts have extremely low concentrations of silica, potassium, titanium, and phosphorus compared with the rocks of the other frontal volcanoes in Kamchatka. The petrochemical differences thus identified were used to more accurately classify structures situated at the junction between the nearby Kronotsky and Krasheninnikov volcanoes. The acquired data will make the basis for further petrologic and geo-
chemical characterization of the volcano, as well as being possibly used for reconstructing the sequence of volcanic events in the area of study, including a more accurate history of the formation of Lake Kronotsky.
Дегтерев А.В., Чибисова М.В., Романюк Ф.А. Эффузивно-эксплозивное извержение вулкана Алаид в 2022 г. (о. Атласова, Северные Курильские острова) // Вестник КРАУНЦ. Серия: Науки о Земле. 2023. Вып. 2. № 58. С. 17-28. 12 с. doi: 10.31431/1816-5524-2023-2-58-17-28.
Data are presented on a moderate effusive-explosive eruption of the summit crater of Alaid volcano (Atlasov Island, Northern Kuril Islands) observed from September 10 to December 1, 2022. Based on satellite and visual data, it was found that as a result of Strombolian-Volcan activity two lava flows, 2.6 and 1 km long, were poured out on the southern slope of the volcano, and at least 16 emissions occurred to a height of 2.5 to 6 km a.s.l. The ash plumes spread out mainly in the southeast and east-southeast directions, their maximum length reaching 300–500 km. The eruption posed a danger to local airlines. The lava outpouring provoked the formation of lahars that descended the southern slope of the volcano and reached the island coast. The alluvial fan formed from mudflow masses partially deposited beyound the coastline, causing an increase in the island land.
Калачева Е.Г., Таран Ю.А., Волошина Е.В., Тарасов К.В., Мельников Д.В., Котенко Т.А., Эрдниева Д.Ю. Кратерное озеро Кипящее в кальдере вулкана Головнина: геохимия воды и газов, вынос магматических летучих (о. Кунашир) // Вулканология и сейсмология. 2023. Т. 17. № 1. С. 3-20. doi: 10.31857/S0203030622700018.
Lake Kipyashchee (Boiling) with an area of ~4.6 ha and a maximum depth of 25 m fills the explosion funnel near one of the extrusive domes of the Golovnin volcano caldera. The water of the lake is ultra-acid (рН = 2.2–2.5) of the chloride-sulfate type with a mineralization of 2.0–2.2 g/l. The water temperature on the surface varies from 30 to 100°C, the average is 37°C. The flow of the lake is carried out through the Protoka in the lake Goryachee (Hot) is 120 l/s (August 2021). The hydrothermal output of magmatic Cl and S (as SO4) from Lake Kipyashchee is 10 t/day and 5.4 t/day, respectively. For the first time, the total diffusive removal of carbon dioxide from the surface of Lake Kipyashchee was estimated as 5.4 tons/day. Obtained from the results of field work in 2020–2021 geochemical data indicate an increase (compared to 2015) in hydrothermal activity in the Golovnin volcano caldera.
Кирюхин А.В., Бергаль-Кувикас О.В., Лемзиков М.В., Журавлёв Н.Б. Магматическая система Ключевского вулкана по сейсмическим данным и их геомеханической интерпретации // Записки горного института. 2023. № 263. С. 698-714.
Королев С.П., Сорокин А.А., Гирина О.А. Применение видеокамер для мониторинга активности вулканов // Информационные технологии и высокопроизводительные вычисления: материалы VII Международной науч.- практ. конф., Хабаровск, 11-13 сентября 2023 г. Хабаровск: ХФИЦ ДВО РАН. 2023. С. 107-111.
Based on computer vision and machine learning methods, algorithms have been developed to classify images from fixed video cameras, as well as detect signs of volcanic activity in them. The results of testing the developed algorithms are presented using the example of observation data on the Klyuchevskoy and Sheveluch volcanoes. It is shown that the proposed solutions can be used for operational and retrospective monitoring of volcanic activity.
Ладыгин В.М., Гирина О.А., Фролова Ю.В. Петрофизические и прочностные свойства экструзивных пород вулкана Безымянный, Камчатка // Вулканология и сейсмология. 2023. № 3. С. 3-20.
This is the first petrophysical study of extrusive rocks (dacites to andesites) discharged by Bezymianny Volcano. We provide a comparative description of properties for extrusive rocks in accordance with identified age groups. We show the dynamics in the variation of extrusive rock properties in relation to their ages, with the result that the older a rock the higher are its density, strength, and elastic parameters. Rocks petrophysical features are compared between extrusive domes and lava flows. We argue for petrophysical properties to be applicable for deriving more accurate results for the genesis of rocks having similar petrophysical properties, in particular, rocks of extrusive and effusive origin.
Марченков В.В., Гирина О.А., Лупян Е.А., Уваров И.А. Система совместного анализа временных рядов наблюдений вулканической активности по данным низкоорбитальных и геостационарных спутников // Материалы 21-й Международной конференции «Современные проблемы дистанционного зондирования Земли из космоса. М.: ИКИ РАН. 2023. № XXI.B.486.
Мельников Д.В., Калачева Е.Г. Динамика вод кратерного озера вулкана Малый Семячик за период 1999-2021 гг. по данным дистанционного зондирования // Вулканизм и связанные с ним процессы. Материалы XXVI ежегодной научной конференции, посвящённой Дню вулканолога, 30-31 марта 2023 г., Петропавловск-Камчатский. Петропавловск-Камчатский: ИВиС ДВО РАН. 2023. С. 58-61.
На основе данных дистанционного зондирования за период с 1999 по 2021 гг. определены этапы изменения активности кратерного озера вулкана Малый Семячик. Показано, что изменение цветовой палитры поверхности озера является следствием изменения химического состава воды.
Черкашин Р.И., Бергаль-Кувикас О.В., Чугаев А.В., Ларионова Ю.О., Биндеман И.Н., Хомчановский А.Л., Плутахина Е.Ю. Условия генерации и источники магм вершинного и побочного извержений вулкана Ключевской в 2020-2021 гг.: изотопно-геохимические (Sr-Nd-Pb-O) данные // Петрология. 2023. Т. 31. Вып. 3. С. 264-280. doi: 10.31857/S0869590323030032.
Bergal-Kuvikas Olga, Bindeman Ilya, Chugaev Andrey, Larionova Yulia, Perepelov Alexander, Khubaeva Olga Pleistocene-Holocene Monogenetic Volcanism at the Malko-Petropavlovsk Zone of Transverse Dislocations on Kamchatka: Geochemical Features and Genesis // Pure and Applied Geophysics. 2022. doi: 10.1007/s00024-022-02956-7.