Observation of Intensified Lower Hybrid Noise in the Midlatitude Ionosphere

Michel Parrot (1) , O. Santolik , J.-Y. Brochot , Jean-Jacques Berthelier (2)

1 LPCE - Laboratoire de physique et chimie de l'environnement
2 CETP - Centre d'étude des environnements terrestre et planétaires

We report DEMETER observations of strongly intensified electric noise at the lower hybrid frequency in the midlatitude ionosphere during the recovery phase of a magnetic storm. The spectrum of the noise is broadband and centered at the lower hybrid frequency, which is of a very unusual shape that suggests nonlinear interaction triggered by the injection of ring current ions into the ionosphere.

Domaines: Physique des plasmas [physics.plasm-ph]; Astrophysique [astro-ph]; Physique Atmosphérique et Océanique [physics.ao-ph]

Michel Parrot, O. Santolik, J.-Y. Brochot, Jean-Jacques Berthelier. Observation of Intensified Lower Hybrid Noise in the Midlatitude Ionosphere. IEEE Transactions on Plasma Science, 2008, 36 (4 (part 1)), pp.1164-1165. ⟨10.1109/TPS.2008.924492⟩. ⟨hal-00321905⟩