Statistics – Applications
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pim7.conf...13g&link_type=abstract
Proceedings of the International Meteor Conference, Bereges, France, 7-10 June, 2007 Edited by Rendtel, J.; Vaubaillon, J. Inter
Statistics
Applications
Scientific paper
A great amount of photographic data of meteoroid trajectories in the Earth's atmosphere has been collected. Most images have been obtained by four fireball networks, which operated in USA, Canada, Europe, and Spain in different time periods. The approximation of the data by theoretical relations makes it possible to obtain additional estimates which do not directly follow from observations. In the present paper, I suggest the algorithm to find such parameters of theoretical relation between the height and the velocity of the bolide motion to fit observations along the luminous trajectories. The main difference to the previous works is that the given observations are approximated using the analytical solution of the equations of meteor physics. The model presented in this paper was applied here to a number of bright meteors observed by the Canadian MORP camera network and to the Benesov bolide, which is one of the the brightest well observed fireballs registered by the European network. The correct mathematical modelling of meteor events in the atmosphere is necessary for further estimates of key parameters, including the extra-atmospheric mass, the ablation coefficient, and the effective enthalpy of evaporation of entering bodies. This information is needed by some applications, namely those aimed to study the problems of asteroid and comet security, to develop measures of planetary defense, and to determine the bodies that can reach the Earth's surface.
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