Abstract
The results of instrumental observations of acoustic oscillations and geomagnetic variations during the fall of the bolide on November 17, 2021, near the town of Izhevsk (Russia) are presented. It is shown that the bolide explosion was accompanied by an acoustic signal and manifested itself in magnetic field variations. Based on the data of acoustic observations performed at three observatories, the probable region of destruction of the bolide was determined and the energy of the acoustic source was estimated. It is noted that the geomagnetic effect caused by the bolide explosion had a nonlocal character and was observed at epicentral distances of up to ~4000 km.
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Notes
On the same day, November 17, 2021, at 14:50 UTC, a bolide falling was observed in the northwest of the European part of Russia in the vicinity of St. Petersburg.
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Funding
This work was performed within the framework of a State Assignment, project no. 1220329000185-5 “Manifestation of Natural and Man-made Processes in Geophysical Fields.”
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Translated by D. Voroshchuk
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Rybnov, Y.S., Riabova, S.A. & Spivak, A.A. Acoustic and Magnetic Effect of a Falling Bolide on November 17, 2021. Dokl. Earth Sc. 504, 385–389 (2022). https://doi.org/10.1134/S1028334X22060137
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DOI: https://doi.org/10.1134/S1028334X22060137