Mathematics
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27..203i&link_type=abstract
Planetary and Space Science, vol. 27, Feb. 1979, p. 203-210.
Mathematics
2
Auroral Zones, Ion Cyclotron Radiation, Ionospheric Heating, Plasma Turbulence, Upper Ionosphere, Electrostatic Waves, Field Aligned Currents, Magnetic Storms, Mathematical Models
Scientific paper
Using plasma parameters from a typical stormtime ionospheric energy balance model, we have investigated the effects of plasma turbulence on the auroral magnetoplasma. The turbulence is assumed to be comprised of electrostatic ion cyclotron waves. These waves have been driven to a nonthermal level by a geomagnetic field-aligned, current-driven instability. The evolution of this instability is shown to proceed in two stages and indicates an anomalous increase in field-aligned electrical resistivity and cross-field ion thermal conductivity as well as a decrease in electron thermal conductivity along the geomagnetic field. In addition, this turbulence heats ions perpendicular to the geomagnetic field and hence leads to a significant ion temperature anisotropy.
Fontheim Ernest G.
Ionson James A.
Ong S. B. R.
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