Auroral ionospheric conductivities: a comparison between experiment and modeling, and theoretical f_10.7-dependent model for EISCAT and ESR

J. Lilensten (1) , P. L. Blelly (2) , W. Kofman (1) , D. Alcaydé (2)

1 CEPHAG - Centre d'Études des Phénomènes Aléatoires et Géophysiques
2 CESR - Centre d'étude spatiale des rayonnements

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 f_10.7 index and on the solar zenith angle.

Domaines: Océan, Atmosphère; Sciences de la Terre

J. Lilensten, P. L. Blelly, W. Kofman, D. Alcaydé. Auroral ionospheric conductivities: a comparison between experiment and modeling, and theoretical f_10.7-dependent model for EISCAT and ESR. Annales Geophysicae, 1996, 14 (12), pp.1297-1304. ⟨hal-00329058⟩