Screening of Meteoroids by Ablation Vapor in High-Velocity Meteors

Screening of Meteoroids by Ablation Vapor in High-Velocity Meteors

The ablation is calculated of non-fragmenting 10−2 to 10 cm sized meteoroids for typical Leonids with a velocity of 72 km/s at altitudes of about 90–110 km. At altitudes below the onset of intensive evaporation, a dense vapor cloud is formed around the body. This vapor cloud screens the meteoroid su...

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Veröffentlicht in:Earth, moon, and planets moon, and planets, 1998-01, Vol.82-83, p.109-128
Hauptverfasser: Popova, Olga P, Sidneva, Svetlana N, Shuvalov, Valery V, Strelkov, Alexandr S
Format: Artikel
Sprache:eng
Schlagworte:
Ablation
Evaporation
Gases
Leonid meteoroids
Meteoroids
Meteors & meteorites
Particle beams
Physical properties
Vapor clouds
Velocity
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container_start_page 109
container_title Earth, moon, and planets
container_volume 82-83
creator Popova, Olga P
Sidneva, Svetlana N
Shuvalov, Valery V
Strelkov, Alexandr S
description The ablation is calculated of non-fragmenting 10−2 to 10 cm sized meteoroids for typical Leonids with a velocity of 72 km/s at altitudes of about 90–110 km. At altitudes below the onset of intensive evaporation, a dense vapor cloud is formed around the body. This vapor cloud screens the meteoroid surface from direct impacts of air molecules. A particle beam model is developed that describes the air meteoroid interaction. Based on this model, the physical parameters of the vapor cloud are calculated and compared with observations collected during the Leonid Multi-Instrument Aircraft Campaign. General agreement with measured temperatures is found. In addition, boundaries of the model's applicability to specific encounter conditions are given.
doi_str_mv 10.1023/A:1017063007210
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Ablation
Evaporation
Gases
Leonid meteoroids
Meteoroids
Meteors & meteorites
Particle beams
Physical properties
Vapor clouds
Velocity
title Screening of Meteoroids by Ablation Vapor in High-Velocity Meteors
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