Articles | Volume 20, issue 7
https://doi.org/10.5194/angeo-20-981-2002
Special issue:
https://doi.org/10.5194/angeo-20-981-2002
31 Jul 2002
 | 31 Jul 2002

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

R. André, F. Lefeuvre, F. Simonet, and U. S. Inan

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.

Key words. Magnetospheric physics (plasmasphere; plasma waves and instabilities; instruments and techniques)

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