Physical model for motion of low-mass meteor particle grazing upper atmosphere layers
|1Kozak, PM |
1Astronomical Observatory of the Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
|Space Sci.&Technol. 2016, 22 ;(4):51-57|
|Section: Space and Atmospheric Physics|
|Publication Language: Ukrainian|
Analysis of TV meteor catalogues for the possible presence of meteors which could be registered after a point of minimal collision with the earth is carried out. The classic liquid drop model is proposed to use for determination of low light Earthgrazers in the mass range 0.001—10 g presence and possibility of their registration. Since a grazing meteor may fly across rare atmosphere layers on heights 80—120 km, we propose to enhance the system of equations of heating and ablation adding the equation of fusion, which can play a significant role in this case.
The equation of fusion was derived basing on the equation of ablation by the introduction of a dimensionless parameter. Using the enhanced system of equations, we found that stony and iron meteor particles of the given mass range can continue vaporization and radiation after the perigee, and some of them burn down completely while the other part leaves the atmosphere in the solid or liquid state.
|Keywords: grazing atmosphere meteors, liquid drop model, meteor physics, meteors|
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