2020
DOI: 10.30730/2541-8912.2020.4.1.071-081.082-092
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Wave perturbations in the atmosphere accompanying the eruption of the Raykoke volcano (Kuril Islands) June 21–22, 2019

Abstract: Резюме Rus PDFInfrasound signals (IS), accompanied the most powerful episodes of the Raykoke volcano of the 21-22 June 2019, were registered by the network of observation stations, located at the distances of 335 to 974 km from the volcano. We identified IS of two frequency ranges: f = 0.08-0.5 Hz and f = 0.004-0.012 Hz. The first one was caused by magma fragmentation and nonstationary processes, appeared during the ash-gas mix outflowing from the crater. The second IS range is associated with an eruptive colu… Show more

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Cited by 8 publications
(13 citation statements)
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“…We suggest this is the latest possible eruption onset time as there may have been lower intensity activity that started earlier and was below detection limits. However, Firstov et al (2020) examined infrasound data from local instruments and noted a similar onset time. These pulses have similar infrasonic intensity, lightning stroke rates, and plume heights.…”
Section: Waxing-pulsatory Phasementioning
confidence: 90%
See 1 more Smart Citation
“…We suggest this is the latest possible eruption onset time as there may have been lower intensity activity that started earlier and was below detection limits. However, Firstov et al (2020) examined infrasound data from local instruments and noted a similar onset time. These pulses have similar infrasonic intensity, lightning stroke rates, and plume heights.…”
Section: Waxing-pulsatory Phasementioning
confidence: 90%
“…In this study we retrospectively characterize the VEI 4 eruption of Raikoke volcano, Kuril Islands, on 21-22 June 2019 (Degtyarev and Chibisova, 2019;Firstov et al, 2020;Girina et al, 2019;Rashidov et al, 2019;Smirnov et al, 2021) to evaluate the state-of-the-art in remote observational tools in application to a closed system volcano. We define "remote" as instruments that are non-local to the volcano which include satellite remote sensors, global lightning networks, and regional and remote infrasound.…”
Section: Introductionmentioning
confidence: 99%
“…The Newhall and Self (1982) paper which presented the formalised basis for VEI estimation term VEI4 eruptions as "large magnitude eruptions" in contrast to eruptions at a VEI of 5 or larger being "very large eruptions". I recommend then the authors include to refer to the June 2019 Raikoke eruption as a "large magnitude eruption", consistent with the infrasound measurements from Firstov et al (2020). The measurements show that there were 11 individual eruptions, with the 9th of these (from 23:00 on the 21st June to 02:00 on the 22nd) the most explosive phase.…”
mentioning
confidence: 61%
“…Minor revisions -----1) Abstract line 1 -this 1st sentence should communicate more about the magnitude of the Raikoke eruption. The paper by Firstov et al (2020) presents measurements of the infrasound wave signals from the eruptions from monitoring stations on the Kamchatka peninsula, which show the eruption had a volcanic explosivity index (VEI) of 4, i.e. it was a VEI4 eruption.…”
mentioning
confidence: 99%
“…Prior to 2019 there had been two major historic eruptions (in 1778 and 1924). During the 2019 eruption there were no monitoring instruments located directly on the island [Girina et al 2019;Firstov et al 2020]. Thus, remote observations from satellite, infrasound, and volcanic lightning were particularly valuable for detecting and characterizing this eruption [Horváth et al 2021;McKee et al 2021].…”
Section: Introductionmentioning
confidence: 99%