Determination of ionospheric conductivities from UVI intensity ratios

Physics

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2407 Auroral Ionosphere (2704)

Scientific paper

Germany et al. [1994] examined the viability of using LBH emission ratios to infer auroral conductances, using modeled line brightnesses representative of the (then) planned UVI bandpasses. Here we extend that work by using actual UVI bandpass information instead of single modeled lines. Conductances are calculated using combined two-stream and Field Line Interhemispheric Plasma (FLIP) model calculations to specify the ionosphere. The dependence of modeled conductances to UVI bandpass intensities is examined as a function of incident average energy, total energy flux, and changes in solar and magnetic activity levels. Potential parameterizations of conductance with UVI intensity ratios will be examined, as will error estimates of the conductance determinations. Germany, G.A., D.G. Torr, P.G. Richards, M.R. Torr, and S. John, Determination of ionospheric conductivities from FUV auroral emissions, J. Geophys. Res., 99, 23297, 1994.

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