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Propagating substorm injection frontsIt is argued that a series of two-satellite observations leads to a clarification of substorm plasma injection, in which boundary motion plays a major role. Emphasis is put on a type of event characterized by abrupt, dispersionless changes in electron intensity and a coincident perturbation that consists of both a field magnitude increase and a small rotation toward more dipolar orientation. Comparing plasma observations at two points, it is found that in active, preinjection conditions the two most important features of the plasma sheet are: (1) the low-energy convection boundary for near-zero energy particles, determined by the magnitude of the large-scale convection electric field; and (2) the precipitation-flow boundary layer between the hot plasma sheet and the atmospherically contaminated inner plasma sheet.
Document ID
19810059602
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moore, T. E.
(New Hampshire Univ. Durham, NH, United States)
Arnoldy, R. L.
(New Hampshire, University Durham, NH, United States)
Feynman, J.
(Boston College Chestnut Hill, MA, United States)
Hardy, D. A.
(USAF, Geophysics Laboratory, Bedford MA, United States)
Date Acquired
August 11, 2013
Publication Date
August 1, 1981
Publication Information
Publication: Journal of Geophysical Research
Volume: 86
Subject Category
Geophysics
Accession Number
81A44006
Funding Number(s)
CONTRACT_GRANT: NAGW-52
CONTRACT_GRANT: NSF ATM-79-20484
CONTRACT_GRANT: F19628-79-C-0031
Distribution Limits
Public
Copyright
Other

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