Physics
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.6151c&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A4, p. 6151-6162.
Physics
4
Earth Ionosphere, Electric Arcs, Electron Precipitation, Interplanetary Magnetic Fields, Magnetosphere-Ionosphere Coupling, Polar Caps, Auroral Arcs, E Region, Electric Field Strength, F Region, Magnetohydrodynamic Flow, Parameterization, Time Dependence
Scientific paper
The local ionospheric modification that is due to a generalized steady state solar aligned (SA) arc structure is addressed. For a representative set of SA arc parameters which includes both convection and precipitation, emphasis is placed on the modification by SA polar cap arcs upon the F region electron density and the height integrated conductivity. At low fluxes and low characteristic energies, SA polar cap arcs have the most pronounced relative effect at F region altitudes in darkness for winter solar minimum conditions. The absolute enhancement in summer solar minimum and winter solar maximum is equivalent to that of winter solar minimum, but the higher ambient densities make the relative enhancement less. The TEC enhancement associated with an SA arc may be used to indicate the degree of plasma cross flow across the arc.
Crain David J.
Schunk Robert W.
Sojka Jan J.
Zhu Lijun
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