Geomagnetic disturbances caused by the fall of Chelyabinsk (February 15, 2013) and Lipetsk (June 21, 2018) bolides

Alexander A. Spivak; Svetlana A. Riabova; Yaroslav O. Romanovsky

doi:10.1117/12.2601973

15 December 2021 Geomagnetic disturbances caused by the fall of Chelyabinsk (February 15, 2013) and Lipetsk (June 21, 2018) bolides

Alexander A. Spivak, Svetlana A. Riabova, Yaroslav O. Romanovsky

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 1191651 (2021) https://doi.org/10.1117/12.2601973
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

On the example of the Chelyabinsk (February 15, 2013) and Lipetsk (June 21, 2018) events, the geomagnetic variations accompanying the fall of meteorites in the Earth's atmosphere are considered. Using the data of instrumental observations carried out at a number of magnetic observatories of the International INTERMAGNET Network and at the Mikhnevo Geophysical Observatory of Sadovsky Institute of Geosphere Dynamics of Russian Academy of Sciences it is shown that, in general, the fall of meteorites causes a change in the modulus of the magnetic induction vector by up to ~ 3.5 nT, regardless of the distance to the place of impact of the cosmic body. In this case, the horizontal components of the magnetic induction decrease in a bay-like character with an amplitude of up to ~ 8 nT. The geomagnetic effect of meteorite impacts is observed at distances of up to 2700 km. The dependence of the duration of the induced variations of the modulus of the magnetic induction vector on the distance is proposed.

Citation Download Citation

Alexander A. Spivak, Svetlana A. Riabova, and Yaroslav O. Romanovsky "Geomagnetic disturbances caused by the fall of Chelyabinsk (February 15, 2013) and Lipetsk (June 21, 2018) bolides", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 1191651 (15 December 2021); https://doi.org/10.1117/12.2601973

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