Abstract
The results of instrumental observations carried out at observatories of the INTERMAGNET network and at the Wakkanai ionospheric sounding station were used to show that the vigorous effusion–explosion eruption of Shiveluch Volcano occurring on April 10, 2023 was accompanied by variations in the Earth’s magnetic field, as well as by changes in the critical frequency of the ionospheric F 2 layer.
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Notes
The amplitude b* and peak amplitude В0 for different observatories are listed in Table 1.
In the case under consideration, the speed of disturbance propagation is near that of “slow” MHD waves (the speed of traveling ionospheric disturbances is much smaller, between 650 and ~2000 m/s).
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This study was supported within the framework of the state assignment no. 1021052706233-4-1.5.4 “Manifestations of Processes of Natural and Manmade Origin in Geophysical Fields” (FMWN-2022-0012).
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Translated by A. Petrosyan
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Adushkin, V.V., Riabova, S.A., Spivak, A.A. et al. Magnetic and Ionospheric Effects of the Shiveluch Volcano Eruption on April 10, 2023. J. Volcanolog. Seismol. 17, 439–443 (2023). https://doi.org/10.1134/S0742046323700379
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DOI: https://doi.org/10.1134/S0742046323700379