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Article Dans Une Revue Journal of Geophysical Research Space Physics Année : 1989

Characterization of Alfvenic fluctuations in the magnetopause boundary layer

Résumé

In the course of its magnetopause crossings at various local times, ESA's GEOS 2 spacecraft has detected intense magnetic and electric fluctuations in the 1-10 Hz ULF range. Spectral analysis and correlations are applied to both these fluctuations, as well as a minimum-variance analysis to the magnetic fluctuations, in order to ascertain the nature of these fluctuations. It is shown that the observed electric and magnetic signatures are consistent with small-scale Alfvenic field-aligned structures passing by the spacecraft at high speed. These structures are suggested to correspond to nonlinear Alfvenic structures.
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hal-00408546 , version 1 (08-07-2021)

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L. Rezeau, A. Morane, S. Perraut, A. Roux, R. Schmidt. Characterization of Alfvenic fluctuations in the magnetopause boundary layer. Journal of Geophysical Research Space Physics, 1989, 94, pp.101-110. ⟨10.1029/JA094IA01P00101⟩. ⟨hal-00408546⟩
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