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The earth's ring current - Present situation and future thrustsParticle distributions, currents, and the ring current situation prior to the August 1984 launch of the AMPTE Charge Composition Explorer (CCE) are discussed. CCE results which demonstrate the capability of these new measurements to pursue questions of ring current sources, energization, and transport are presented. Consideration is given to various ring current generation mechanisms which have been discussed in the literature, and a two-step generation process which to a certain extent unifies the previous mechanisms is presented. The first in-situ global observations of ring current decay as obtained through the detection of energetic neutral atoms generated by charge exchange interactions between the ring current and hydrogen geocorona are discussed, as well as the possibility of using the detection of energetic neutral atoms to obtain global images of the earth's ring current.
Document ID
19880033414
Document Type
Reprint (Version printed in journal)
Authors
Williams, D. J. (Johns Hopkins University Laurel, MD, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Physica Scripta
Volume: T18
ISSN: 0281-1847
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: N00024-85-C-5301
CONTRACT_GRANT: NAVY TASK 12UOS10
Distribution Limits
Public
Copyright
Other