Tunguska-1908 and similar events in light of the New Explosive Cosmogony of minor bodies - Astrophysics > Earth and Planetary AstrophysicsReport as inadecuate




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Abstract: The well-known Tunguska-1908 phenomenon TP problems the fast transfer ofthe kinetic energy of the meteoroid W~10-50 Mt TNT to air, with its heating toT>10^4 K at an altitude of 5-10 km, the final turn of the smoothly sloping,~0-20^o to horizon, trajectory of the body through ~10^o to the West, thepattern and area of the tree-fall and trees- scorching by heat radiation, etc.allow a simple solution within the New Explosive Cosmogony NEC of minorbodies, as opposed to other approaches. The NEC considers the short-period SPcomet nuclei, to which the Tunguska body belonged, to be fragments produced inexplosions of massive icy envelopes of Ganymede-type bodies saturated byproducts of bulk electrolysis of ices to the form of a 2H2+O2 solid solution.The nearly tangent entry into the Earth-s atmosphere with V~20 km-s of such anucleus, ~200-500 m in size and ~5-50x10^12 g in mass, also saturated by2H2+O2, initiated detonation of its part of ~10^12 g at an altitude of 5-10 km.This resulted in deflection of this fraction trajectory by 5^o-10^o, and fastexpansion with ~2 km-s of its detonation products brought about their fastslowing down by the air, heating of the latter to T>10^4 K and a phenomenon ofhigh-altitude explosion. On crossing the Earth-s atmosphere, the main part ofthe unexploded nucleus escaped into space, and this body moving presently in anSP orbit should eventually be identified in time. Its impact with W~250-3000 MtTNT on the Earth-s surface which could occur in 1908 would have produced acrater up to ~3.5-8 km in size, with an ejection of dust that would havebrought about a climatic catastrophe. The processes involved in the TP areresembling those accompanying falling P-Shoemaker-Levy 9 onto Jupiter and,possibly, the impact-caused Younger Dryas cooling ~13 ka ago.



Author: Edward M. Drobyshevski

Source: https://arxiv.org/







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