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Article Dans Une Revue Annales Geophysicae Année : 2001

An interpretation of ion composition diurnal variation deduced from EISCAT observations

Résumé

Physical interpretation is made of the O+/Ne diurnal variations in summer, revealed by Litvine et al. (1998) from the EISCAT observations. It is shown that the observed anti-correlation between the Z50 parameter, corresponding to the transition region between 50% of molecular and atomic ions, and the width Dz of the transition, defined as the altitude width between 10% and 90% of the O+/Ne ratio, can be reproduced in model calculations and the result of different recombination laws (quadratic in the lower and linear in the upper ionosphere) as well as diurnal variations in the photo-ionization rates.
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Dates et versions

hal-00329160 , version 1 (18-06-2008)

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  • HAL Id : hal-00329160 , version 1

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A. V. Mikhailov, W. Kofman. An interpretation of ion composition diurnal variation deduced from EISCAT observations. Annales Geophysicae, 2001, 19 (3), pp.351-358. ⟨hal-00329160⟩
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