A kinetic model of the formation of the hot oxygen geocorona: 2. Influence of O +  ion precipitation | Zendy

Bisikalo D. V. | Zendy; Shematovich V. I. | Zendy; Gérard J. C. | Zendy

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A kinetic model of the formation of the hot oxygen geocorona: 2. Influence of O + ion precipitation

Author(s) -

Bisikalo D. V.,

Shematovich V. I.,

Gérard J. C.

Publication year - 1995

Publication title -

journal of geophysical research: space physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.67

H-Index - 298

eISSN - 2156-2202

pISSN - 0148-0227

DOI - 10.1029/94ja03196

Subject(s) - oxygen , precipitation , atmosphere (unit) , ion , physics , atomic physics , population , atmospheric escape , kinetic energy , atmospheric sciences , boltzmann distribution , thermodynamics , astrophysics , meteorology , classical mechanics , planet , demography , quantum mechanics , sociology

A model of the oxygen geocorona near the exobase solving the nonlinear Boltzmann equation with a Monte Carlo method is used to calculate the distribution of the hot oxygen atoms during geomagnetically disturbed nighttime conditions. The precipitation of energetic O + ions and the subsequent enhancement of the hot O corona at high latitudes is simulated for the September 17, 1971, storm conditions. It is found that in such circumstances, the O + precipitation is a significant source of superthermal O atoms leading to important perturbations of the velocity distribution of the bulk oxygen population. The effective gas temperature near the exobase is similar to that in the undisturbed atmosphere, but the hot O density rises considerably over the quiet condition values.

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