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Carter A.J., Ramsey M.S., Girina O.A., Belousov A.B., Durant A., Skilling I., Wolfe A. Spaceborne and field-based observations of Bezymianny Volcano, Kamchatka from 2000-2008 // Abstracts. AGU Fall Meeting, 14-19 December. San-Francisco, USA: AGU. 2008. doi: V43A-2140.
Carter Adam J., Ramsey Michael S., Belousov Alexander B. Detection of a new summit crater on Bezymianny Volcano lava dome: satellite and field-based thermal data // Bulletin of Volcanology. 2007. Vol. 69. № 7. P. 811-815. doi:10.1007/s00445-007-0113-x.
Caudron Corentin, Taisne Benoit, Kugaenko Yulia, Saltykov Vadim Magma migration at the onset of the 2012–13 Tolbachik eruption revealed by Seismic Amplitude Ratio Analysis // Journal of Volcanology and Geothermal Research. 2015. Vol. 307. P. 60 - 67. doi: 10.1016/j.jvolgeores.2015.09.010.
   Аннотация
Abstract In contrast of the 1975–76 Tolbachik eruption, the 2012–13 Tolbachik eruption was not preceded by any striking change in seismic activity. By processing the Klyuchevskoy volcano group seismic data with the Seismic Amplitude Ratio Analysis (SARA) method, we gain insights into the dynamics of magma movement prior to this important eruption. A clear seismic migration within the seismic swarm, started 20 hours before the reported eruption onset (05:15 UTC, 26 November 2012). This migration proceeded in different phases and ended when eruptive tremor, corresponding to lava flows, was recorded (at ~ 11:00 UTC, 27 November 2012). In order to get a first order approximation of the magma location, we compare the calculated seismic intensity ratios with the theoretical ones. As expected, the observations suggest that the seismicity migrated toward the eruption location. However, we explain the pre-eruptive observed ratios by a vertical migration under the northern slope of Plosky Tolbachik volcano followed by a lateral migration toward the eruptive vents. Another migration is also captured by this technique and coincides with a seismic swarm that started 16–20 km to the south of Plosky Tolbachik at 20:31 {UTC} on November 28 and lasted for more than 2 days. This seismic swarm is very similar to the seismicity preceding the 1975–76 Tolbachik eruption and can be considered as a possible aborted eruption.
Chaplygin Ilya, Yudovskaya Marina, Vergasova Lidiya, Mokhov Andrey Native gold from volcanic gases at Tolbachik 1975–76 and 2012–13 Fissure Eruptions, Kamchatka // Journal of Volcanology and Geothermal Research. 2015. Vol. 307. P. 200 - 209. doi: 10.1016/j.jvolgeores.2015.08.018.
   Аннотация
Abstract Aggregates and euhedral crystals of native gold were found in sublimates formed during New Tolbachik Fissure Eruption in 2012–2013 (NTFE). Gold-bearing sublimate samples were taken from a red-hot (690 °C) degassing fracture in the roof of an active lava tunnel 1.5 km from active Naboko cinder cone in May 2013. The gas condensate collected at 690 °C in this site contains 16 ppb Au, 190 ppb Ag and 1180 ppm Cu compared to 3 ppb Au, 39 ppb Ag and 9.7 ppm Cu in the condensate of pristine magmatic gas sampled at 1030 °C. The 690 °C volcanic gas is most likely a mix of magmatic gas and local snow buried under the lava flows as indicated by oxygen and hydrogen isotope compositions of the condensate. The lower-temperature gas enrichment in gold, copper and chlorine is resulted from evaporation of the 690 °C condensate during forced gas pumping at sampling. Native gold was also found in fumarolic encrustations collected from caverns in basalt lava flows with temperature up to 600 °C in June 2014, in a year after eruption finished. The native gold precipitation in newly formed Cu-rich sublimates together with the well known gold occurrences in cinder cones of 1975–1976 Large Tolbachik Fissure Eruption manifest a transport capability of oxidized volcanic gas.
Chapter 1 Recent tectonics of the crust and volcanism in Kamchatka / Quaternary volcanism and tectonics in Kamchatka. Bull. Volcanol.. // Bulletin Volcanologique. 1979. Vol. 42. Vol. 1-4. P. 9-112. doi: 10.1007/BF02597042.
Chapter 2 Basalt and basalt-andesite volcanism in Kamchatka / Quaternary volcanism and tectonics in Kamchatka. Bull. Volcanol.. // Bulletin Volcanologique. 1979. Vol. 42. Vol. 1-4. P. 113-174. doi: 10.1007/BF02597043.
Chapter 3 Acid volcanism in Kamchatka / Quaternary volcanism and tectonics in Kamchatka. Bull. Volcanol.. // Bulletin Volcanologique. 1979. Vol. 42. Vol. 1-4. P. 175-254. doi: 10.1007/BF02597044.
Cherkashin Roman, Bergal-Kuvikas Olga, Chugaev Andrey, Larionova Yulia, Bindeman Ilya, Khomchanovsky Anton, Plutahina Ekaterina Conditions and Magmas Sources of the Summit and Flank Eruptions of Klyuchevskoy Volcano in 2020–2021: Isotope (Sr–Nd–Pb–O)-geochemical data // Petrology. 2023. Vol. 31. № 3. doi: 10.1134/S0869591123030037.
Chirkov A.M. Radon as a possible criterion for predicting eruptions as observed at Karymsky volcano // Bulletin Volcanologique. 1975. Vol. 39. Vol. 1. P. 126-131. 6 p. doi:10.1007/BF02596952.
Chubarova O.S., Gorelchik V.I., Garbuzova V.T. Seismic Activity of Bezymyannyi Volcano in 1975-1979 // Volcanology and Seismology. 1983. № 3. P. 303-314.