Other
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..277h&link_type=abstract
Journal of Geophysical Research, vol. 87, Jan. 1, 1982, p. 277-283. Research sponsored by the U.S. Department of Energy.
Other
44
Flow Distribution, Flow Velocity, Geomagnetic Tail, Magnetohydrodynamic Flow, Space Plasmas, Statistical Analysis, Explorer 43 Satellite, Magnetic Poles, Neutral Sheets, Solar Magnetic Field, Solar Wind
Scientific paper
The characteristics of plasma flow are studied statistically by using the IMP 6 plasma and magnetic field data. The analysis was performed by dividing the data set according to flow direction and flow velocity. Fast tailward flows (those with a tailward component of velocity exceeding 300 km/s) are observed only within a few earth radii of the estimated neutral sheet position and are associated with southward polarity of the magnetic field. They can therefore be interpreted as a product of reconnection operating at a location earthward of the spacecraft. On the other hand, slow tailward flows (those with a tailward component less than 300 km/s) are not associated with southward field polarity and are very similar to slow earthward flows (those with an anti-tailward component less than 300 km/s) in such characteristics as association to northward inclination of the field and occurrence over a wide range of distance from the neutral sheet. These results suggest that there exist at least two source mechanisms of plasma flow in the magnetotail. X type neutral line in the near-earth plasma sheet is likely to be the source of the fast tailward flows but other driving mechanisms are responsible for slow flows.
Bame J. Jr. S.
Hayakawa Hisao
Hones Edward W. Jr.
Nishida Akira
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