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Description of substorms in the tail incorporating boundary layer and neutral line effectsA description of the substorm expansion phase that includes the formation of a neutral line in the relatively near-earth portion of the tail plasma sheet and phenomena observed in the plasma sheet boundary layer (PSBL) is proposed. Specifically, it is proposed that substorm onset results from the formation of a neutral line within the preexisting source region for the PSBL. The source region is presumably the tail current sheet, which is suggested to extend well earthward of 80 earth radii. Both before and after the neutral line forms, auroral field-aligned currents and large ion flows remain confined to the PSBL earthward of the source region.
Document ID
19890029413
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lyons, L. R.
(Aerospace Corp. Space Sciences Laboratory, Los Angeles, CA, United States)
Nishida, A.
(Tokyo, University Sagamihara, Japan)
Date Acquired
August 14, 2013
Publication Date
November 1, 1988
Publication Information
Publication: Geophysical Research Letters
Volume: 15
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
89A16784
Funding Number(s)
CONTRACT_GRANT: NAGW-853
Distribution Limits
Public
Copyright
Other

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