Simulation of ionosphere-plasmasphere coupling taking into account ion inertia and temperature anisotropy

Details Simulation of ionosphere-plasmasphere coupling taking into account ion inertia and temperature anisotropy Simulation of ionosphere-plasmasphere coupling taking into account ion inertia and temperature anisotropy

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..585k&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, May 1984, p. 585-598.

Physics

44

Atmospheric Models, Earth Ionosphere, Ion Temperature, Plasmasphere, Space Plasmas, Anisotropic Media, Continuity Equation, Equations Of Motion, Inertia, Plasma Temperature, Positive Ions

Scientific paper

In this paper a model for the earth's ionosphere and plasmasphere is offered which allows for the inertia and anisotropic energy distribution of thermal plasma. A procedure for simultaneous solution of equations of continuity and motion for the O(+) and H(+) ions, subject to inertia terms, is described. The model also includes transfer equations for longitudinal and transversal thermal energies. The system of simulating equations and the kinetic equation for superthermal electron spectra are concordantly solved along geomagnetic field lines. Within the framework of the model developed, a study is made of the dynamics of filling of the evacuated plasmaspheric reservoir after a magnetospheric disturbance. It is shown that the filling of the tubes of force with L greater than or equal to 3.5 proceeds with supersonic speeds during the first several days and the character of filling differs very much from a diffusion-equilibrium one. The spatiotemporal behavior of electron and ion temperature anisotropy that is formed in the process of filling is considered. It is found that the value of electron anisotropy can be larger. A brief analysis is made of the causes of electron and ion temperature anisotropy.

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