Physics
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.3137p&link_type=abstract
Journal of Geophysical Research, vol. 83, July 1, 1978, p. 3137-3144.
Physics
18
Annual Variations, Diurnal Variations, Magnetospheric Electron Density, Plasmapause, Solar Cycles, Whistlers, Antarctic Regions, Electron Tubes, Equatorial Atmosphere, Graphs (Charts), Ionospheric Electron Density
Scientific paper
Based on whistler data on annual and diurnal variations of the solar cycle obtained over a period of about 20 years, a study is made of equatorial plasmasphere electron density and associated tube electron content. Beyond L approximately equal to 3, the plasmasphere profile is dominated by variations caused by magnetic disturbances and subsequent recovery. Following the disturbances, the plasmasphere is divided into an inner saturated region (in equilibrium with the underlying ionosphere) and an outer unsaturated region (filling with plasma from underneath). Diurnal variations appear in the outer plasmasphere as small effects on larger storm-associated variations. Plasmaspheric profiles are used to estimate plasmasphere density levels. The electron density upper limits may be used to compare electron density measurements made by various techniques.
Carpenter Donald L.
Park Chan-Gyung
Wiggin D. B.
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