Physics
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4..399a&link_type=abstract
Geophysical Research Letters, vol. 4, Oct. 1977, p. 399-401. NSF-supported research.
Physics
Antarctic Regions, Doppler Effect, Geomagnetic Pulsations, Whistlers, Daytime, Earth Magnetosphere, Electric Fields, Electric Pulses, Ionospheric Propagation
Scientific paper
A VLF receiver at Siple Station during 1975 recorded the Doppler shift on Whistler mode signals from NAA, Cutler, Maine. An initial analysis of the data shows that signals could be received at any hour of the day during Southern Winter. On the dayside, the Doppler shift frequently showed large oscillations, due to pulsations in the Pc4-5 range. On average, a well-defined diurnal pattern of shifts was found. This pattern supports some features of recent measurements of the convection electric field in the plasmasphere, and also suggests that the quiet plasmasphere near L = 3 refills by approximately 10 to the 17th el/m sq/day for the entire tube between the 1000 km levels.
Andrews M. K.
Thomson Neil. R.
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