A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter

Details A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996eeco.conf.....c&link_type=abstract

Conference Paper, Space1996: International Conference and Exposition on Engineering, Construction, and Operations In Space

Statistics

Computation

1

Meteoroids, Planetary Atmospheres, Ablation, Atmospheric Models, Mathematical Models, Comets, Cometary Collisions, Atmospheric Entry, Shoemaker-Levy 9 Comet, Hydrodynamics, Energy Conservation, Deformation

Scientific paper

A new semianalytical model describing the entry and deformation of meteoroids entering planetary atmospheres has been developed and calibrated against numerical simulations performed using the CTH shock-physics computational hydrocode. The model starts with the classical treatment of meteoroid ablation which is modified to include an explicit treatment of energy conservation during the ablative process. This is reconciled with terrestrial observations by modeling the formation of a vapor/debris layer (the visible bolide) surrounding the central meteoroid. A mechanical deformation model based on long-wavelength hydrodynamic instability growth is added and calibrated against numerical simulations performed with CTH. The analytical model provides initial conditions for numerical fireball simulations which are compared with observations of the Comet Shoemaker-Levy 9 impact on Jupiter and can be used to assess the terrestrial impact hazard.

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