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Ballooning instability of the earth's plasma sheet region in the presence of parallel flowStability of the plasma sheet and plasma sheet boundary layer against the ballooning mode instability is investigated. The equilibrium state of a two-dimensional plasma sheet configuration with parallel sheared flow is modeled. This equilibrium is shown to be ballooning unstable when delta-W is not positive definite, where delta-W is the potential energy. The eigenmode structure of the ballooning mode is found by imposing the boundary conditions that the waves are totally reflected from the ionosphere, and that no waves are coming in from infinity. The eigenmode structure of the unstable balloning modes is highly oscillatory, extending beyond about 100 R(E). The ballooning modes are thus a possible candidate for explaining the MHD waves and other dynamical events observed in the magnetotail by ISEE 3 and other spacecraft.
Document ID
19900054441
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lakhina, G. S.
(New York Univ. New York, NY, United States)
Hameiri, E.
(New York Univ. New York, NY, United States)
Mond, M.
(New York University New York, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
90A41496
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-86-0167
CONTRACT_GRANT: NAGW-781
Distribution Limits
Public
Copyright
Other

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