Empirical models of height integrated conductivities

Details Empirical models of height integrated conductivities Empirical models of height integrated conductivities

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86..125w&link_type=abstract

Journal of Geophysical Research, vol. 86, Jan. 1, 1981, p. 125-137. Research supported by the National Research Council of Cana

Statistics

Computation

166

Atmospheric Conductivity, Atmospheric Models, Electron Precipitation, Geomagnetism, Hall Effect, Magnetic Variations, Atmospheric Ionization, Earth Atmosphere, Electron Density Profiles, Extreme Ultraviolet Radiation, Kp Index, Vertical Distribution

Scientific paper

Two-dimensional distributions of the height-integrated Pedersen and Hall conductivities have been computed for latitudes poleward of 60 deg invariant representative of two Kp activity levels. Average precipitating fluxes of electrons with energies of 0.15, 1.27, 9.65, and greater than 22 keV obtained by the energetic particle detector of Isis 2 during 1971-1974 are used as input to a Rees-type computation. The assumption of equilibrium conditions and a recombination rate profile permit calculation of electron density profiles and conductivity profiles. Calculations are performed at 300 grid points, specifically 12 local times and 25 latitudes from 60 to 84 deg invariant latitude. The models include ionization due to galactic EUV and other background sources that produces base conductivities as well as solar photon ionization through an empirical fit to Chatanika radar observations. Substantial modulation of the conductivities is found to result from longitudinal variation of the magnitude of the earth's magnetic field.

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