Other
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999m%26ps...34..723b&link_type=abstract
Meteoritics & Planetary Science, vol. 34, no. 5, pp. 723-728 (1999).
Other
8
Scientific paper
Arguments in favor of the cometary origin of the Tunguska meteorite are adduced along with reasons against the asteroidal hypothesis. A critical analysis is given for the hypotheses by Sekanina (1983) and Chyba et al. (1993). On the basis of the azimuth and inclination of the trajectory of the Tunguska body with plausible values of the geocentric velocity, the semimajor axis of the orbit and its inclination to the ecliptic plane are calculated for this body. It is noted that the theory of the disintegration of large bodies in the atmosphere put forward by Chyba et al. (1993) is crude. Applying more accurate theories (Grigoryan, 1979; Hills and Goda, 1993) as well as taking into account the realistic shape of the body yield for the cometary body lower disruption heights than obtained by Chyba et al. Numerical simulations carried out by Nemchinov et al. agree well with the cometary hypothesis and the analytical calculations based on Grigoryan's theory. The asteroidal hypothesis is shown not to be tenable: the complete lack of stony fragments in the region of the catastrophe, cosmochemical data-in particular, the results of an isotope analysis, and some other information contradict this hypothesis. It is shown that stony fragments that originated in the explosive disruption of the Tunguska body should be vaporized neither by the radiation of the vapor cloud nor as a result of their fall on the Earth's surface.
No associations
LandOfFree
The Nature of the Tunguska Meteorite does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Nature of the Tunguska Meteorite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Nature of the Tunguska Meteorite will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-987302