Кувикас О.В. Новые данные о составе вулканических стекол вулкана Шивелуч и особенности их дифференциации // Лучшие проекты VIII Всероссийской выставки научно-технического творчества молодёжи. 2008, Москва. 2008. С. 195-196.
Кувикас О.В. Сравнительный анализ кислого вулканизма Восточного вулканического пояса Камчатки / Всероссийский конкурс научно-исследовательских работ студентов и аспирантов в области наук о Земле. Томск: Томский национальный университет. 2011. С. 29-33.
Кугаенко Ю.А., Воропаев П.В. Вариации статистической оценки уровня сейсмичности по шкале СОУС’09: вулкан Безымянный (Камчатка) // Вестник КРАУНЦ. Серия: Науки о Земле. 2015. Вып. 25. № 1. С. 31-40.
We use SESL’09 technique for a unified estimation of seismicity level in a given space-time regions. The application of the distribution function of radiated seismic energy permits the formalization of qualitative description of seismicity. We present the results from statistical estimations of seismicity level before the 2000- 2012 Bezymianny Volcano eruptions. The state of seismicity was describes by the monogram, constructed according the SESL’09 technique. By processing the Klyuchevskoy volcano group seismic catalog, we estimated variations of seismicity and detected background level. Statistically significant variations of the seismicity level preceded the eruptions were detected and discussed.
Кугаенко Ю.А., Нуждина И.Н., Салтыков В.А. Особенности спектральных компонент вулканических землетрясений на примере вулканов Кизимен, Корякский, Мутновский и Горелый // Вестник КРАУНЦ. Серия: Науки о Земле. 2011. Вып. 18. № 2. С. 102-113.
The article presents a technique for formalized separation of volcano-tectonic earthquakes and low-frequency seismic events which occurred on volcanoes. The technique was used as a case study for four episodes of volcanic activity in Kamchatka based on data from seismic stations located near volcanoes: explosive eruption of Kizimen Volcano (2010-2011), activization of Gorely Volcano (2009-2011), activization of Koriaksky Volcano (2008-2009), long-term intense hydrothermal activity of Mutnovsky Volcano. For visualization of hidden correlation in waveform spectral characteristics we use the triangle diagram. We have targeted a trend in volcano investigation which supposes study of possible relation between types of volcano activity and distribution of spectral components in seismic records.
Кугаенко Ю.А., Павлов В.М., Иванова Е.И., Абубакиров И.Р., Салтыков В.А. Толудская вспышка сейсмичности и землетрясение 30.11.2012 г. (MС = 5.4, MW = 4.8), сопровождавшие начало Толбачинского извержения 2012-2013 гг. // Вулканология и сейсмология. 2017. № 6. С. 33-48. doi: DOI: 10.7868/S0203030617060049.
This paper reports a study of the Tolud earthquake sequence; the sequence was a burst of shallow
seismicity between November 28 and December 7, 2012; it accompanied the initial phase in the Tolbachik
Fissure Eruption of 2012‒2013. The largest earthquake (the Tolud earthquake of November 30, 2012, to be
referred to as the Tolud Earthquake in what follows, with KS = 11.3, ML = 4.9, MС = 5.4, and MW = 4.8) is
one of the five larger seismic events that have been recorded at depths shallower than 10 km beneath the entire Klyuchevskoi Volcanic Cluster in 1961‒2015. It was found that the Tolud earthquake sequence was the foreshock–aftershock process of the Tolud Earthquake. This is one of the larger seismicity episodes ever to have
occurred in the volcanic areas of Kamchatka. Data of the Kamchatka seismic stations were used to compute
some parameters for the Tolud Earthquake and its largest (МL = 4.3) aftershock; the parameters include the
source parameters and mechanisms, and the moment magnitudes, since no information on these is available
at the world seismological data centers. The focal mechanisms for the Tolud Earthquake and for its aftershock are consistent with seismic ruptures at a tension fault in the rift zone. Instrumental data were used to estimate the intensity of shaking due to the Tolud Earthquake. We discuss the sequence of events that was a signature of the time-dependent seismic and volcanic activity that took place in the Tolbachik zone in late November 2012 and terminated in the Tolud burst of seismicity. Based on the current ideas of the tectonics and magma sources for the Tolbachik volcanic zone, we discuss possible causes of these earthquakes.
Кугаенко Ю.А., Салтыков В.А., Абкадыров И.Ф., Воропаев П.В. Временные сейсмологические наблюдения в районе трещинного Толбачинского извержения 2012-2013 гг. И их результаты // Вулканология и сейсмология. 2017. № 4. С. 67-82. doi: 10.7868/S0203030617040058.
The seismicity that accompanied the Tolbachik Fissure Eruption was recorded by additional seismic stations that were installed in the southern Klyuchevskoi Volcanic Cluster area in January to October 2013. We used broadband (0.033–50 Hz) three-component digital Guralp CMG-6TD seismometers. This temporary network provided seismicity data at a lower energy level than can be done using the regional seismograph network of Kamchatka. The processing of the resulting digital records supplied data for compiling a catalog of over 700 ML=0–3.5 (КS=1.5–8.5) earthquakes, which is an order of magnitude greater than the number of events located by the regional network for the same period of time. The seismicity in the area of Ploskii Tolbachik Volcano was found to concentrate mostly in spatially isolated areas during the eruption. The main isolated clusters of earthquakes were identified both in the eruption area itself and along the periphery of Ploskii Tolbachik Volcano, in the area of the Zimina volcanic massif, and in the Tolud epicenter zone; the eruption zone was not dominant in the seismicity. The region of a shallow seismicity increase beneath Ploskii Tolbachik before the eruption was not found to exhibit any increased activity during the time the temporary seismograph network was operated, which means that a seismicity inversion took place at the beginning of the eruption. We discuss the question of what the earthquake-generating features are that we have identified.