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Magnetohydrodynamics of atmospheric transients. III - Basic results of nonplane two-dimensional analysisThe dynamic response of a stratified atmosphere permeated by a magnetic field to a sudden localized energy release (e.g., the onset of a flare) is examined in a physically self-consistent manner within the approximation of axisymmetric two-dimensional magnetohydrodynamics. In contrast to the previous plane analyses, with the inclusion of out-of-plane components of magnetic and velocity fields, it is shown that the presence of transverse waves leads to spiraling material motions and formation of ring current with open (mostly radial) magnetic field configuration. In the closed (mostly azimuthal) magnetic field, the evolutionary response of a magnetic field is shown to follow the typical sequence observed with a flare, namely, the relaxations of magnetic shear toward the potential configuration. The details of the results are described with discussions on their physical significance.
Document ID
19810044777
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Nakagawa, Y.
(NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, Ala., United States)
Wu, S. T.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Han, S. M.
(Alabama, University Huntsville, Ala., United States)
Date Acquired
August 11, 2013
Publication Date
February 15, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Geophysics
Accession Number
81A29181
Funding Number(s)
CONTRACT_GRANT: NSF ATM-77-22484
Distribution Limits
Public
Copyright
Other

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