Catastrophic Events Caused by Cosmic Objects
V. V. Adushkin, I. V. Nemchinov
Springer Science & Business Media, Oct 9, 2007 - Science - 370 pages
Many times all of us could hear from mass media that an asteroid approached and swept past the Earth. Such an asteroid or comet will inevitably strike the planet some day. This volume considers hazards due to collisions with cosmic objects, particularly in light of recent investigations of impacts by the authors. Each chapter written by an expert contains an overview of an aspect and new findings in the field. The main hazardous effects – cratering, shock, aerial and seismic waves, fires, ejection of dust and soot, tsunami are described and numerically estimated. Numerical simulations of impacts and impact consequences have received much attention in the book. Fairly small impacting objects 50 -100 m in diameter pose a real threat to humanity and their influence on the atmosphere and ionosphere is emphasized. Especially vulnerable are industrially developed areas with dense population, almost all Europe is one of them. Special chapters are devoted to the famous 1908 Tunguska event and new results of its simulations, bolides in the atmosphere and impacts on the early Earth.
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SizeFrequency Distribution of Asteroids and Impact Craters Estimates of Impact Rate
Bolides in the Earth Atmosphere
Geologic Effects of Large Terrestrial Impact Crater Formation
Thermal Radiation and Fires after Impacts of Cosmic Objects
Tunguska Catastrophe of 30 June 1908
Adushkin altitudes amplitude Arizona Press Artemieva asteroids and comets atmosphere bolide Chicxulub Chicxulub crater Comet Shoemaker-Levy 9 cometary comets and asteroids computations cosmic bodies crater diameter deceleration density depth distance distribution due to comets dust Dynamics Earth Earth’s surface ejecta energy release epicenter Equation estimates evolution eyewitnesses fall fire fragments Gehrels geological geomagnetic Geophys Res Hazards due Icarus impact craters impact event impact structure impact velocity impactor initial ionosphere Ivanov BA kinetic energy lunar mass material maximum Melosh HJ melt meteorite fall Meteoritics Planetary Sci meteoroid Moscow Mt TNT Near-Earth Objects Nemchinov Neukum nuclear explosions numerical modeling numerical simulations observed orbit particles Planet Space Sci plume projectile radiation radius region rocks Russian seismic waves shock wave Shoemaker-Levy Shuvalov Shuvalov VV Solar System target tektites temperature terrestrial planets trajectory tsunami Tunguska event Tunguska meteorite University of Arizona vapor Vityazev Vredefort