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Title: LARGE LEONID ENTRY MODELING: APPLICATION TO THE BOLIDE OF 11/17/1998

Abstract

No abstract prepared.

Authors:
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
788221
Report Number(s):
LA-UR-01-5648
TRN: US200202%%286
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 Oct 2001
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; METEORITES; ORBITS; REENTRY; SPACE FLIGHT; MATHEMATICAL MODELS

Citation Formats

D. O. REVELLE. LARGE LEONID ENTRY MODELING: APPLICATION TO THE BOLIDE OF 11/17/1998. United States: N. p., 2001. Web.
D. O. REVELLE. LARGE LEONID ENTRY MODELING: APPLICATION TO THE BOLIDE OF 11/17/1998. United States.
D. O. REVELLE. Mon . "LARGE LEONID ENTRY MODELING: APPLICATION TO THE BOLIDE OF 11/17/1998". United States. doi:. https://www.osti.gov/servlets/purl/788221.
@article{osti_788221,
title = {LARGE LEONID ENTRY MODELING: APPLICATION TO THE BOLIDE OF 11/17/1998},
author = {D. O. REVELLE},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 2001},
month = {Mon Oct 01 00:00:00 EDT 2001}
}

Conference:
Other availability
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  • In this paper we apply the theoretical entry model of ReVelle (2001c) to the large Leonid bolide of November 17, 1998. We modeled the entry both using hypersonic aerodynamics and compared the results to the infrasonic detection and interpretation of the event by ReVelle and Whitaker (1999).
  • No abstract prepared.
  • In this work we present a model originally developed by ReVelle (1979, 1993) that has been applied to model large Leonid bolides with a few relatively minor modifications and one major modification which allows for catastrophic 'pancake: fragmentation processes as described below. The minor modifications include allowing the energy of ablation per unit mass for vaporization, Qvap, to be a free variable that is adjusted until agreement is obtained between the theoretical model and the statistically expected ablation coefficient for the Leonids (Group IIIB type bolide). It was found that the Qvap had to be reduced by a factor ofmore » about five times compared to the accepted value of Qvap for cometary materials. Alternative ways of achieving this degree of agreement between theory and observations are also suggested as well. In a separate paper we apply this model to a specific Leonid bolide during the 1998 storm period.« less
  • In this talk, I will describe the wealth of evidence that has forced my colleagues and me to conclude that the great mass extinctions, 65 million years ago, were caused by a large bolide impact on the earth. Bolide is a new word to most people, and it means any piece of solar system debris, such as a meteorite, asteroid, or comet nucleus. As I will show, the bolide responsible for the extinction of most of the then existing species, including the dinosaurs, was about 10 kilometers in diameter.