Abstract

MEDINA, C.; RIOS, V.  and  GOMEZ, E.. A model of enhanced electron concentration irregularities in the ionosphere: Perturbation amplitudes and hydrodynamic effects. Geofís. Intl [online]. 2005, vol.44, n.4, pp.379-384. ISSN 2954-436X.

A bidimensional model is proposed to perform computer simulations of enhanced electron concentration irregularities, in an extended altitude range centered at the bottom of the F layer, and including the dependence of collision and recombination frequencies on density. The model is tested with different perturbation amplitudes in a limited fringe. We find that amplitudes in a medium range are more effective as a destabilising effect. All results confirm the hydrodynamic Rayleigh-Taylor prediction.

Keywords : Ionosphere; electron concentration irregularities; Rayleigh-Taylor instability; hydrodynamic effect; perturbation amplitude.

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