Differential drift of plasma clouds in the magnetosphere: an update

Details Differential drift of plasma clouds in the magnetosphere: an update Differential drift of plasma clouds in the magnetosphere: an update

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jastp..63.1281l&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 63, Issue 11, p. 1281-1284.

Physics

1

Scientific paper

First, Brice's (Journal of Geophysical Research 72 (1967) 5193) original theory for the formation of the plasmapause is recalled. Next, the motivation for writing a modification to this early theory is pointed out. The key aspects of Brice's manuscript are outlined and discussed. The mechanism of interchange driven by gravitational forces, centrifugal effects and kinetic pressure is considered in the cases when the integrated Pedersen conductivity is (i) negligibly small (as in Chandrasekhar's, Plasma Physics, University of Chicago Press, Chicago, 1960, 217 pp. and Longmire's, Elementary Plasma Physics, Wiley Interscience, New York, 1963, 296 pp., textbooks), (ii) infinitely large (as in many magnetospheric convection models), or (iii) has a finite value of the order of 0.2 mho, as in the Earth's ionosphere. Updates of this theory of interchange resulting from the existence of weak double layers, from quasi-interchange, or from the effects of an additional population of energetic ring-current particles forming the extended tail of the velocity distribution function, have also been reexamined.

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