Modelling of neutral-gas releases into the earth's ionosphere |
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| Authors: | L G Bruskin M A Koen I M Sidorov |
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| Institution: | (1) Department of Mathematics, Irkutsk Polytechnical Institute, Lermontov Street 83, 664074 Irkutsk, USSR |
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| Abstract: | This paper discusses a mathematical model which is aimed at the interpretation of the effects by injections of chemically active gases into the ionosphere. A study is made of neutral-gas expansion processes as well as of processes associated with the formation of decreased plasma density regions, ionospheric  holes . The spatial-temporal distribution of particles released during the transition to the diffusion regime is constructed using an approximate, analytic solution of the Boltzmann equation with the collision integral in the form of BGK, with proper allowance for gravitation and atmospheric inhomogeneity. The investigation of processes associated with the formation of ionospheric holes is carried out using a numerical model of ionosphere-plasmasphere coupling, in which the transfer equations for charged components are integrated along geomagnetic field lines. The purpose of the model is to calculate the electron density and temperature, ion composition and emission of a disturbed region in the 6300 Å line at ionospheric and plasmaspheric heights. |
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| Keywords: | Active experiments chemical releases ionospheric modification |
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