Numerical Simulation of Ionospheric Disturbances Generated by the Chelyabinsk and Tunguska Space Body Impacts
- 8 Downloads
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.
Keywordsasteroid comet asteroid danger shockwave meteoric explosion numerical modeling
Unable to display preview. Download preview PDF.
- Berngardt, O.I., Perevalova, N.P., Kutelev, K.A., Zherebtsov, G.A., Dobrynina, A.A., Shestakov, N.V., Zagretdinov, R.V., Bakhtiyarov, V.F., and Kusonsky, O.A., Toward the azimuthal characteristics of ionospheric and seismic effects of “Chelyabinsk” meteorite fall according to the data from coherent radar, GPS, and seismic networks, J. Geophys. Res., 2015, vol. 120, no. 12, pp. 10754–10771.ADSGoogle Scholar
- Bilitza, D., Altadill, D., Altadill, D., Zhang, Y., Zhang, Y., Mertens, C., Mertens, C., Truhlik, V., Truhlik, V., Richards, P., Richards, P., McKinnell, L.-A., McKinnell, L.-A., and Reinisch, B., The International Reference Ionosphere 2012—a model of international collaboration, J. Space Weath. Space Clim., 2014, vol. 4, no. A07, p. 12.Google Scholar
- Boslough, M.B. and Crawford, D.A., Shoemaker-Levy 9 and plume-forming collisions on Earth, Proc. United Nations Int. Conf. “Near-Earth Objects,” Remo, J.L., Ed., New York: NY Acad. Sci., 1997, pp. 236–282.Google Scholar
- CIRA, COSPAR International Reference Atmosphere, Amsterdam: North Holland, 1961.Google Scholar
- Ivanov, K.G., Geomagnetic effect of the Tunguska meteorite fall, Meteoritika, 1964, no. 24, pp. 141–151.Google Scholar
- Khazins, V.M. and Shuvalov, V.V., Numerical modeling of acoustic-gravitational waves initiated by the fall of a meteoroid, in Dinamicheskie protsessy v geosferakh (Dynamic Processes in Geospheres), Nauch. Tr. Inst. Din. Geosfer, Ross. Akad. Nauk, Moscow: GEOS, 2016, no. 8, pp. 197–207.Google Scholar
- Kuznetsov, N.M., Termodinamicheskie funktsii i udarnye adiabaty vozdukha pri vysokikh temperaturakh (Thermodynamic Functions and Impact Adiabats of Air at the High Temperatures), Moscow: Mashinostroenie, 1965.Google Scholar
- Popova, O.P., Jenniskens, P., Emel’yanenko, V., Kartashova, A., Biryukov, E., Khaibrakhmanov, S., Shuvalov, V., Rybnov, Y., Dudorov, A., Grokhovsky, V.I., Badyukov, D.D., Yin, Q.-Z., Gural, P.S., Albers, J., Granvik, M., et al., Chelyabinsk airburst, damage assessment, meteorite recovery, and characterization, Science, 2013, vol. 342, no. 6162, pp. 1069–1073.ADSCrossRefGoogle Scholar
- Ruzhin, Yu.Ya., Kuznetsov, V.M., and Smirnov, V.M., The ionosphere effects of the Chelyabinsk meteoroid explosion, Int. J. Electron. Appl. Res., 2014b, vol. 1, no. 2, pp. 39–60.Google Scholar
- Xu, J., Smith, A.K., and Ma, R., A numerical study of the effect of gravity-wave propagation on minor species distributions in the mesopause region, J. Geophys. Res.: Atmos., 2003, vol. 108, no. 3, pp. 1–12.Google Scholar