Computer Science
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986p%26ss...34.1189a&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 34, Dec. 1986, p. 1189-1200.
Computer Science
85
Earth Magnetosphere, Magnetohydrodynamic Waves, Plasmapause, Compression Waves, Harmonics, Plasma Resonance, Surface Waves, Time Series Analysis
Scientific paper
Recent analytical and numerical modeling has demonstrated the possibility that impulsively-stimulated compressional hydromagnetic cavity resonances can drive local field-line resonances in the magnetosphere. This paper extends the modeling to include axisymmetric plasmapause structures with realistic radial variation in the magnetospheric cavity. The results show that: (1) the plasmapause plays an important role in determining which cavity resonances are dominant; (2) when the wave fields are significantly nonaxisymmetric, additional cavity resonances are evident which are at least partly trapped within the plasmasphere; (3) the position of the plasmapause determines where (and whether) cavity resonances couple significantly to field-line resonances; and (4) for the small 'azimuthal' wavenumber chosen, there is no evidence of a compressional surface wave on the plasmapause.
Allan W.
Poulter E. M.
White S. P.
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