Whistler influence on the overall VLF wave intensity in the upper ionosphere

J. Záhlava 1 F. Němec 1 Jean -Louis Pincon 2 O. Santolík 1 I. Kolmašová 3 Michel Parrot 2
1 Faculty of Mathematics and Physics [Praha/Prague]
2 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace
3 IAP - Institute of Atmospheric Physics [Prague]
Abstract : We investigate the influence of lightning‐generated whistlers on the overall intensity of electromagnetic waves measured by the Detection of Electro‐Magnetic Emissions Transmitted from Earthquake Regions spacecraft (2004–2010, quasi Sun‐synchronous polar orbit with an altitude of about 700 km) at frequencies below 18 kHz. Whistler occurrence rate evaluated using an onboard neural network designed for automated whistler detection is used to distinguish periods of high and low whistler occurrence rates. It is shown that especially during the night and particularly in the frequency‐geomagnetic latitude intervals with a low average wave intensity, contribution of lightning‐generated whistlers to the overall wave intensity is significant. At frequencies below 1 kHz, where all six electromagnetic wave components were measured during specific intervals, the study is accompanied by analysis of wave propagation directions. When we limit the analysis only to fractional‐hop whistlers, which propagate away from the Earth, we find a reasonable agreement with results obtained from the whole data set. This also confirms the validity of the whistler occurrence rate analysis at higher frequencies.
Type de document :
Article dans une revue
Journal of Geophysical Research : Space Physics, American Geophysical Union/Wiley, 2018, 123 (7), pp.5648-5660. 〈10.1029/2017JA025137〉
Liste complète des métadonnées
https://hal-insu.archives-ouvertes.fr/insu-01823598
Contributeur : Nathalie Rouchon <>
Soumis le : jeudi 3 janvier 2019 - 14:45:12
Dernière modification le : jeudi 7 février 2019 - 17:04:54

Fichier

Z-hlava_et_al-2018-Journal_of_...
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

INSU | UNIV-ORLEANS | OSUC | LPC2E | PSL | OBSPM

Citation

J. Záhlava, F. Němec, Jean -Louis Pincon, O. Santolík, I. Kolmašová, et al.. Whistler influence on the overall VLF wave intensity in the upper ionosphere. Journal of Geophysical Research : Space Physics, American Geophysical Union/Wiley, 2018, 123 (7), pp.5648-5660. 〈10.1029/2017JA025137〉. 〈insu-01823598〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

43

Téléchargements de fichiers

6

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD