A statistical study of the dynamics of the equatorward boundary of the diffuse aurora in the pre‐midnight sector | Zendy

Sauvaud J. A. | Zendy; Crasnier J. | Zendy; Galperin Yu. I. | Zendy; Feldstein Y. I. | Zendy

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A statistical study of the dynamics of the equatorward boundary of the diffuse aurora in the pre‐midnight sector

Author(s) -

Sauvaud J. A.,

Crasnier J.,

Galperin Yu. I.,

Feldstein Y. I.

Publication year - 1983

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/gl010i008p00749

Subject(s) - physics , geophysics , midnight , polarization (electrochemistry) , geodesy , magnetic field , inertia , electric field , boundary (topology) , dynamics (music) , plasma , geology , classical mechanics , astronomy , mathematics , chemistry , mathematical analysis , acoustics , quantum mechanics

We present a statistical study of the dynamics of the equatorward boundary of the diffuse aurora. This S oft E lectron B oundary appears to be best fitted by using the AE index values averaged over the 5 hours preceding the measurements. This inertia of the boundary is interpreted as indicative (1) of the action of a polarization electric field braking the inward motion of the corresponding equatorial plasma during increasing magnetic activity so that several successive perturbations are needed to obtain a consequent inward displacement and (2) of a weak wave‐particle interaction during periods of decreasing magnetic activity.

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