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

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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 … continued below

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7 p.

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Crawford, D. A. & Boslough, M. B. May 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 22 times. More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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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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7 p.

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OSTI as DE96008163

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  • 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

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  • Other: DE96008163
  • Report No.: SAND--96-0783C
  • Report No.: CONF-9606105--6
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 247419
  • Archival Resource Key: ark:/67531/metadc667600

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • May 2, 2020, 5:01 p.m.

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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, article, May 1, 1996; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc667600/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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