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Ring current development during the great geomagnetic storm of February 1986The variations of the ring current energy density and composition during the great magnetic storm of February 1986 were investigated using particle measurements obtained by the charge-energy-mass instrument on the AMPTE Charge Composition Explorer spacecraft. The ring current composition of this storm, which had a complicated main phase and a minimum Dst of -312 nT on February 9, was followed for five days from the prestorm quiet time to the early recovery phase. Results suggested that the very rapid initial Dst recovery (tau of about 9.3 hrs) in this storm resulted largely from the rapid loss of 75- to 100-keV O(+) via charge exchange in the inner portion of the ring current. It is proposed that a major O(+) + N(+) ring current component generally exists near the maximum phase of great storms.
Document ID
19890036838
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hamilton, D. C.
(Maryland Univ. College Park, MD, United States)
Gloeckler, G.
(Maryland Univ. College Park, MD, United States)
Ipavich, F. M.
(Maryland, University College Park, United States)
Wilken, B.
(Max-Planck-Institut fuer Aeronomie Katlenburg-Lindau, Federal Republic of Germany, United States)
Stuedemann, W.
(Maryland Univ. College Park, 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
89A24209
Funding Number(s)
CONTRACT_GRANT: NAGW-101
CONTRACT_GRANT: NAG5-716
Distribution Limits
Public
Copyright
Other

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