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A first approach to model the low-frequency wave activity in the plasmasphere

Abstract : A comprehensive empirical model of waves is developed in the objective to simulate wave-particle interactions involved in the loss and acceleration of radiation belt electrons. Three years of measured magnetic wave field components from the Plasma Wave Instrument on board the DE-1 satellite are used to model the amplitude spectral density of the magnetic wave field of each type of emission observed in the equatorial regions of the plasmasphere: VLF transmitter emissions, chorus emissions, plasmaspheric hiss emissions and equatorial emissions below ~ 200 Hz. Each model is a function of the wave frequency f , the MLT, L and Mlat parameters, and the Kp values. The performances of the plasmaspheric hiss and chorus models are tested on amplitude spectra recorded on board the OGO-5 and GEOS-1 satellites.
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Submitted on : Tuesday, January 1, 2002 - 8:00:00 AM
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R. André, François Lefeuvre, F. Simonet, U. S. Inan. A first approach to model the low-frequency wave activity in the plasmasphere. Annales Geophysicae, European Geosciences Union, 2002, 20 (7), pp.981-996. ⟨10.5194/angeo-20-981-2002⟩. ⟨hal-00329255⟩



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