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Anomalous plasma diffusion and the magnetopause boundary layerAn overview of the current state of anomalous diffusion research at the magnetopause and its role in the formation of the magnetopause boundary layer is presented. Plasma wave measurements in the boundary layer indicate that most of the relevant unstable wave modes contribute negligibly to the diffusion process at the magnetopause under magnetically undisturbed northward IMF conditions. The most promising instability is the lower hybrid drift instability, which may yield diffusion coefficients of the right order if the highest measured wave intensities are assumed. It is concluded that global stationary diffusion due to wave-particle interactions does not take place at the magnetopause. Microscopic wave-particle interaction and anomalous diffusion may contribute to locally break the MD frozen-in conditions and help in transporting large amounts of magnetosheath plasma across the magnetospheric boundary.
Document ID
19930042364
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Treumann, Rudolf A.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Labelle, James
(Dartmouth College Hanover, NH, United States)
Haerendel, Gerhard
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Pottelette, Raymond
(Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire St. Maur-des-Fosses, France)
Date Acquired
August 16, 2013
Publication Date
December 1, 1992
Publication Information
Publication: IEEE Transactions on Plasma Science
Volume: 20
Issue: 6
ISSN: 0093-3813
Subject Category
Geophysics
Accession Number
93A26361
Funding Number(s)
CONTRACT_GRANT: NAGW-1540
Distribution Limits
Public
Copyright
Other

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