Thermomagnetic effects in ionospheric plasma

Details Thermomagnetic effects in ionospheric plasma Thermomagnetic effects in ionospheric plasma

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..133e&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 1, p. 133-140

Physics

10

Electron Energy, F Region, Hall Effect, Magnetic Fields, Magnetohydrodynamic Stability, Plasma Drift, Temperature Gradients, Thermomagnetic Effects, Atmospheric Pressure, Auroral Echoes, Diffusivity, Electrostatics, Geomagnetism, Mathematical Models, Propagation Velocity, Temperature Effects, Wave Propagation

Scientific paper

The creation of plasma structures and significant electron heating up to 5000 K due to thermo-magnetic effects are described. The standard two-fluid treatment gives rise to a number of growing solutions of the dispersion relation. At F-layer heights the instabilities' growth results in irregular structure at the currents either 'incoming' or 'outgoing' to or from the ionosphere depending on the sign of the derivative of the drift velocity in Hall's direction, and pressure irregularities corresponding to infrasonic wave generation. The electron temperature increase appears to exist at auroral latitudes when subsequent magnetic field perturbations take place.

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