Computer Science
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35.1181a&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 35, Sept. 1987, p. 1181-1192.
Computer Science
23
Earth Magnetosphere, Magnetic Flux, Magnetohydrodynamic Waves, Poynting Theorem, Wave Interaction, Asymptotic Methods, Plasmapause
Scientific paper
The structure of the magnetic fields associated with previously-derived hydromagnetic wave electric fields is examined for two radial Alfven speeds using a numerical model with cylindrical gemometry in order to study impulsively-stimulated hydromagnetic wave coupling in the magnetosphere. A geometrical enhancement is noted at small radial distance. The compressional magnetic field components are shown to have near nodes, at certain radial positions, at which the amplitudes do not reach zero and phase changes of less than pi occur over extended radial distances. Asymptotic values of the time-integrated Poynting vector are obtained in the case without a plasmapause, and the energy flow into the ionosphere via field-line resonance is shown to be dominated by the outermost resonance.
Allan W.
Poulter E. M.
White S. P.
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