Satellite and ground-based observations of a large-scale electron precipitation event

Rory J. Gamble (1) , Craig J. Rodger (1) , Mark A. Clilverd (2) , Neil R. Thomson (1) , Thomas Ulich (3) , Michel Parrot (4) , Jean-André Sauvaud (5) , Jean-Jacques Berthelier (6)

1 Department of Physics [Dunedin]
2 BAS - British Antarctic Survey
3 Sodankylä Geophysical Observatory
4 LPCE - Laboratoire de physique et chimie de l'environnement
5 CESR - Centre d'étude spatiale des rayonnements
6 HELIOS - LATMOS

Energetic electron precipitation into the atmosphere is determined using subionospheric VLF measurements, DEMETER satellite electron spectra, and modelling techniques for a 24-hour period during the January 2005 geomagnetic storms. Large-scale observations using VLF measurements of multiple subionospheric paths to Sodankylä, Finland, are combined with detailed in situ measurements from the DEMETER satellite to determine the spatial extent, flux, and energy distribution of the precipitation. By providing a better picture of both the intensity and size of the precipitation region, we obtain a more complete picture of the net impact that such an event has on the atmosphere.

Mots clés: 6 Laboratoire Atmosphères; Milieux; Observations Spatiales; IPSL; CNRS; St-Maur-des-Fossés France (jean- jacques

Domaines: Physique Atmosphérique et Océanique [physics.ao-ph]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

Rory J. Gamble, Craig J. Rodger, Mark A. Clilverd, Neil R. Thomson, Thomas Ulich, et al.. Satellite and ground-based observations of a large-scale electron precipitation event. The XXXth URSI General Assembly and Scientific Symposium, Aug 2011, Istanbul, Turkey. 2 p., ⟨10.1109/URSIGASS.2011.6051151⟩. ⟨hal-00652986⟩