Comet and Asteroid Impact Hazards on a Populated Earth: Computer Modeling
Comet and Asteroid Impact Hazards explores the anticipated consequences of comet and asteroid impact. It presents the first computer simulations of the hazards of comet and asteroid bombardment of a populated Earth. Previous estimates of fatality and damage rates on the 100 to 10,000 year time scale are shown to be too low because they neglect rare, highly lethal outriders of the populations of bombarding objects, those with exceptional strength, unusually low entry velocity, and near-horizontal entry angles. This is the first realistic assessment of both the mean casualty rate and the expected statistical fluctuations in that rate. A breakdown of fatality and damage rates by impactor energy and compositional class suggests lessons for both asteroid search strategies and interdiction techniques.
This book is written so that anyone with college level experience in the physical sciences can understand it. It includes a disk that allows the reader to simulate impact catastrophes. It serves as a useful resource in various physical sciences courses such as astronomy, planetary science, and environmental science.
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1-Year Runs ablation airbursts altitude Appendix atmosphere average blast bolide calculations carbonaceous chondrites CD CD CD CN CN CN cometary compositional crushing strength death deceleration detection diameter distribution Earth Earth-crossing earthquake effects entering body entry angles entry velocity explosive yield fatal events fatality rate fireball firestorms fragments gigaton GOSUB GOTO impact events impact flux impact hazard Impact Process impactor iridium irons kinetic energy largest lethal events LOCATE long-period comets luminous efficiencies magnitude mass megatons mesosiderites meteor meteorite falls near-Earth asteroid Near-Earth Object NEAs NEOs nuclear number of fatalities observed ocean impacts orbit ordinary chondrite oxides pallasites periodic comets planet population density predictions PRINT PRINT#2,USING range reported Results ro ro scale short-period comets simulation skipout Spacewatch statistics stony-irons subroutine sulfur surface impacts target threat tion trajectory tsunami tsunami waves