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Enhanced ion outflows measured by the DE 1 high altitude plasma instrument in the dayside plasmasphere during the recovery phaseIon flow velocities both parallel and perpendicular to the magnetic field, and including the effects of spacecraft charging and spacecraft velocity, have been measured during the recovery phase of two large magnetic storms on October 14 and 21 of 1981. These measurements were made both inside and outside the plasmasphere and indicate unreported yet substantial outflows of ions within the dayside plasmasphere (October 14). Combined data from instruments on board the Dynamics Explorer satellite, including the high altitude plasma instrument, the energetic ion composition spectrometer, the retarding ion mass spectrometer, and the plasma wave instrument, indicate that these ions are most likely dominantly O(+) at energies at least as low as 5 eV. The nightside pass (October 21), which occurred during the recovery phase of a similar storm, showed no plasmaspheric outflows. The results indicate that a large contribution to the outflux into the dayside plasmasphere during the recovery period is due to E greater than 5 eV ions.
Document ID
19850041218
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Menietti, J. D.
(Southwest Research Inst. San Antonio, TX, United States)
Winningham, J. D.
(Southwest Research Inst. San Antonio, TX, United States)
Burch, J. L.
(Southest Research Institute San Antonio, TX, United States)
Peterson, W. K.
(Lockheed Missiles and Space Co., Inc. Palo Alto, CA, United States)
Waite, J. H., Jr.
(NASA Marshall Space Flight Center Space Science Laboratory, Huntsville, AL, United States)
Weimer, D. R.
(Iowa, University Iowa City, IA, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1985
Publication Information
Publication: Journal of Geophysical Research
Volume: 90
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
85A23369
Funding Number(s)
CONTRACT_GRANT: NAG5-310
CONTRACT_GRANT: F7121-84-N-0006
CONTRACT_GRANT: NGL-16-001-002
CONTRACT_GRANT: NAS5-26363
CONTRACT_GRANT: NGL-16-001-043
CONTRACT_GRANT: NAS5-25693
CONTRACT_GRANT: NAS5-25694
Distribution Limits
Public
Copyright
Other

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