A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter
Abstract
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.
- Authors:
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 247419
- Report Number(s):
- SAND-96-0783C; CONF-9606105-6
ON: DE96008163
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Conference
- Resource Relation:
- Conference: Space `96: 5. international conference and exposition on engineering, construction, and operations in space and 2. specialty conference on Robotics for challenging environments (RCE-II), Albuquerque, NM (United States), 1-6 Jun 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 66 PHYSICS; METEOROIDS; DEFORMATION; IMPACT SHOCK; HYDRODYNAMIC MODEL; EARTH ATMOSPHERE; EROSION; HAZARDS; ABLATION; HYDRODYNAMICS; VELOCITY; JUPITER PLANET; COMETS; C CODES; PLUMES
Citation Formats
Crawford, D A, and Boslough, M B. A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter. United States: N. p., 1996.
Web.
Crawford, D A, & Boslough, M B. A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter. United States.
Crawford, D A, and Boslough, M B. 1996.
"A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter". United States. https://www.osti.gov/servlets/purl/247419.
@article{osti_247419,
title = {A model of meteoroid atmospheric entry with implications for the neohazard and the impact of comet Shoemaker-Levy 9 on Jupiter},
author = {Crawford, D A and Boslough, M B},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/247419},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed May 01 00:00:00 EDT 1996},
month = {Wed May 01 00:00:00 EDT 1996}
}