Abstract
Numerical simulation of atmospheric disturbances during the first hours after the Chelyabinsk and Tunguska space body impacts has been carried out. The results of detailed calculations, including the stages of destruction, evaporation and deceleration of the cosmic body, the generation of atmospheric disturbances and their propagation over distances of thousands of kilometers, have been compared with the results of spherical explosions with energy equal to the kinetic energy of meteoroids. It has been shown that in the case of the Chelyabinsk meteorite, an explosive analogy provides acceptable dimensions of the perturbed region and the perturbation amplitude. With a more powerful Tunguska fall, the resulting atmospheric flow is very different from the explosive one; an atmospheric plume emerges that releases matter from the meteoric trace to an altitude of the order of a thousand kilometers.
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Original Russian Text © V.V. Shuvalov, V.M. Khazins, 2018, published in Astronomicheskii Vestnik, 2018, Vol. 52, No. 2, pp. 142–151.
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Shuvalov, V.V., Khazins, V.M. Numerical Simulation of Ionospheric Disturbances Generated by the Chelyabinsk and Tunguska Space Body Impacts. Sol Syst Res 52, 129–138 (2018). https://doi.org/10.1134/S0038094618010094
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DOI: https://doi.org/10.1134/S0038094618010094