Computer Science – Numerical Analysis
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976acaau...3..615k&link_type=abstract
(Colloque sur la Gazodynamique des Explosions et des Systemes Reactifs, 5th, Bourges, France, Sept. 8-11, 1975.) Acta Astronauti
Computer Science
Numerical Analysis
3
Explosions, Mathematical Models, Meteoritic Damage, Shock Wave Propagation, Tungusk Meteorite, Black Holes (Astronomy), Blast Loads, Dynamic Pressure, Gas Dynamics, Numerical Analysis, Seismic Energy
Scientific paper
The propagation and the action upon the earth of a system of shock waves which simulates the Tunguska cosmic-body explosion in Siberia on June 30, 1908, are considered. The various geophysical effects of this phenomenon and some recorded data (map of the forest flattening, information about the zone of radiation burning of trees, seismograms, and barograms) are discussed. A blast of a flying meteorite in the atmosphere is simulated by an explosion of a semiinfinite cylindrical charge having a variable specific energy along its axis, which is inclined to the earth's surface. The method of solution includes exact numerical and approximate analytical approaches. For the determination of the propagation of shock waves, the nonuniformity of the atmosphere is taken into account. Using the available information about the zone of forest flattening, which was the main consequence of the Tunguska meteorite explosion, the inverse problem is solved, and some trajectory characteristics of the meteorite are determined. Finally, the hypothesis of a black hole is criticized.
Chushkin P. I.
Korobeinikov V. P.
Shurshalov L. V.
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