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Ann. Geophys., 14, 1297-1304, 1996
www.ann-geophys.net/14/1297/1996/
© European Geosciences Union 1996
Auroral ionospheric conductivities: a comparison between experiment and modeling, and theoretical f10.7-dependent model for EISCAT and ESR
J. Lilensten1, P. L. Blelly2, W. Kofman1, and D. Alcaydé2
1CEPHAG-ENSIEG, BP 46, 38402 Saint Martin d'Hères Cedex, France
2CESR, 9 Avenue Claude Roche, 31029 Toulouse Cedex, France
Abstract. Several authors have published models of
auroral conductances in the past. Some of them are based on theoretical
approaches; others are the result of observations. The data bases for the latter
models range from 8 h to 3 years of experiments. In this paper, we show the
results of our own modeling, based on a coupled ki- netic/fluid approach. We
compare these results to the sta- tistical model based on 3 years of experiment.
We then model the auroral ionospheric conductances above EISCAT and the
EISCAT-Svalbard Radar for different solar-activity indices. These modeled
conductances are fitted with a simple law depending on the f10.7
index and on the solar zenith angle.
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