Strong localized variations of the low-altitude energetic electron fluxes in the evening sector near the plasmapause - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Annales Geophysicae Année : 1998

Strong localized variations of the low-altitude energetic electron fluxes in the evening sector near the plasmapause

Résumé

Specific type of energetic electron precipitation accompanied by a sharp increase in trapped energetic electron flux are found in the data obtained from low-altitude NOAA satellites. These strongly localized variations of the trapped and precipitated energetic electron flux have been observed in the evening sector near the plasmapause during recovery phase of magnetic storms. Statistical characteristics of these structures as well as the results of comparison with proton precipitation are described. We demonstrate the spatial coincidence of localized electron precipitation with cold plasma gradient and whistler wave intensification measured on board the DE-1 and Aureol-3 satellites. A simultaneous localized sharp increase in both trapped and precipitating electron flux could be a result of significant pitch-angle isotropization of drifting electrons due to their interaction via cyclotron instability with the region of sharp increase in background plasma density.
Fichier principal
Vignette du fichier
angeo-16-25-1998.pdf (297.34 Ko) Télécharger le fichier
Origine : Accord explicite pour ce dépôt
Loading...

Dates et versions

hal-00329072 , version 1 (18-06-2008)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

E. E. Titova, T. A. Yahnina, A. G. Yahnin, B. B. Gvozdevsky, A. A. Lyubchich, et al.. Strong localized variations of the low-altitude energetic electron fluxes in the evening sector near the plasmapause. Annales Geophysicae, 1998, 16 (1), pp.25-33. ⟨10.1007/s00585-997-0025-2⟩. ⟨hal-00329072⟩
168 Consultations
72 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More