Mathematics – Logic
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..909c&link_type=abstract
Journal of Geophysical Research, vol. 84, Mar. 1, 1979, p. 909-916.
Mathematics
Logic
7
Earth Magnetosphere, Plasma Density, Plasma Equilibrium, Plasmapause, Atmospheric Composition, Atmospheric Models, Equatorial Atmosphere, Plasma Temperature, Thermal Plasmas
Scientific paper
A model of plasmaspheric composition and density in the region bounded by the 500-km altitude level and by the dipole field line L = 5 has been constructed. The collisionless kinetic-theory model of quasi-neutral plasma distributions along a dipole field line under the gravitation field, the ambipolar-diffusion electric field, and the inhomogeneous magnetic field is discussed. A simpler fluid-equation model of the plasma distribution under the influence of the above force fields is shown to be able to incorporate effects of plasmasphere thermal structure. With O(+), H(+), and He(+) densities at 500 km as input boundary values and with a phenomenological thermal structure of the plasmasphere abstracted from OGO 5, Prognoz, and S3-3 satellite data, it is shown that the plasma density distributions in the fluid-equation model are consistent with the densities derived from in situ satellite measurements and from whistler observations, both in the topside ionosphere and in the outer plasmasphere.
Boucher J. Jr. D.
Ching B. K.
Chiu Yam T.
Luhmann Janet G.
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