Spectral studies of the sources of ionospheric electric fields

Details Spectral studies of the sources of ionospheric electric fields Spectral studies of the sources of ionospheric electric fields

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92..213e&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Jan. 1, 1987, p. 213-224.

Physics

57

Electric Field Strength, Fourier Analysis, Incoherent Scatter Radar, Ionospheric Currents, Spectrum Analysis, Gravity Waves, Periodic Variations, Plasma Drift

Scientific paper

Spectral analyses (applying the Fourier analysis methods) were performed on three incoherent scatter radar data sets (obtained at Jicamarca, Peru; Chatanika, Alaska; and Arecibo, Puerto Rico) with the aim of investigating the origin of ionospheric electric fields in the frequency range of 0.01-2 cycles/h. In quiet times, atmospheric gravity waves appeared to be the most likely source of the ionospheric electric field. This hypothesis was tested by a direct simultaneous comparison of measurements of gravity waves in the mesosphere and of electric fields in the thermosphere during very quiet conditions. The results indicated that a gravity wave source is a plausible candidate for the electric field fluctuations.

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