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Evidence for the tailward retreat of a magnetic neutral line in the magnetotail during substorm recoveryPlasma sheet observations made during a substorm recovery at 0400 to 0430 UT on March 1, 1978 with the ISEE satellites strongly suggest that the observed field-aligned flow of plasma in the earthward direction has mirrored in the vicinity of the earth and returned to the position of the satellites to produce the tailward flow seen at this time. The correlation between the estimated speeds of the earthward and tailward moving distribution indicates that the observed changes in velocity are spatial rather than temporal. It is concluded that the movement of the plasma sheet surface results from the propagation of an energetic particle source on to new magnetic field lines which progressively map deeper into the tail and also to higher polar latitudes at the earth. The movement of the source onto new magnetic field lines is clearly consistent with the tailward retreat of a magnetic neutral line in the plasma sheet during substorm recovery.
Document ID
19810044083
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Forbes, T. G.
(Los Alamos Scientific Lab. NM, United States)
Hones, E. W.
(Los Alamos Scientific Lab. NM, United States)
Bame, S. J.
(Los Alamos Scientific Lab. NM, United States)
Asbridge, J. R.
(California, University Los Alamos Scientific Laboratory, Los Alamos, N. Mex., United States)
Paschmann, G.
(Los Alamos Scientific Lab. NM, United States)
Sckopke, N.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Russell, C. T.
(California, University Los Angeles, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1981
Publication Information
Publication: Geophysical Research Letters
Volume: 8
Subject Category
Geophysics
Accession Number
81A28487
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-50864-A
CONTRACT_GRANT: BMFT-RV14-B6/74
Distribution Limits
Public
Copyright
Other

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