Plasma convection in the polar ionosphere - Comparison of Cosmos-184-satellite measurements with a model that depends on the IMF vector

Computer Science – Sound

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Convective Flow, Ionospheric Propagation, Magnetoplasmadynamics, Polar Regions, Space Plasmas, Atmospheric Models, Cosmos Satellites, Electric Fields, Field Aligned Currents, Flow Velocity, Magnetohydrodynamic Flow, Satellite Sounding

Scientific paper

Consideration is given to an IMF-dependent model of the planetary distribution of field-aligned current, large-scale electric field, and plasma convection velocity. Parameters along the trajectories of the Cosmos-184 and Cosmos-484 satellites are calculated using this model, and the calculated results are compared with direct measurements of convection velocity and electric field from these satellites. It is shown that, above the illuminated polar cap, the correlation model of the electric field (calculated assuming uniform ionospheric conductivity) is in satisfactory agreement with experimental data. The scale coefficient, depending on the ionospheric conductivity, the earth's conductivity, and other factors, is determined as a result of the comparison.

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