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Substorm variations in the magnitude of the magnetic field - AMPTE/CCE observationsUsing energetic-particle data taken in the near-earth tail by the AMPTE/Charge Composition Explorer (CCE) satellite, 167 ion injection events, that were essentially dispersionless over a 25-285 keV energy range, were identified, and the variations in the total magnetic field strength over the course of these events were examined in order to determine the dependence of the magnetic field strength on dipole latitude. Results indicate that, during periods of substorm activity, the latitudinal position of the current sheet varied significantly within the 32-deg wedge centered on the dipole equator traversed by CCE. Results also suggest that, even in the near-earth magnetotail out to 8.8 R(E) (CCE apogee), the local field measurements are a better guide to the determination of satellite's position relative to the current shield during a substorm, than is the magnetic latitude.
Document ID
19890036845
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lopez, R. E.
(Johns Hopkins Univ. Laurel, MD, United States)
Sibeck, D. G.
(Johns Hopkins Univ. Laurel, MD, United States)
Lui, A. T. Y.
(Johns Hopkins Univ. Laurel, MD, United States)
Takahashi, K.
(Johns Hopkins Univ. Laurel, MD, United States)
Mcentire, R. W.
(Johns Hopkins University Laurel, MD, United States)
Date Acquired
August 14, 2013
Publication Date
December 1, 1988
Publication Information
Publication: Journal of Geophysical Research
Volume: 93
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A24216
Funding Number(s)
CONTRACT_GRANT: N00039-87-C-5301
Distribution Limits
Public
Copyright
Other

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