Parametric excitation of Alfven waves in the ionosphere

Details Parametric excitation of Alfven waves in the ionosphere Parametric excitation of Alfven waves in the ionosphere

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.1491p&link_type=abstract

Journal of Geophysical Research, vol. 87, Mar. 1, 1982, p. 1491-1494.

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21

Earth Ionosphere, Extremely Low Radio Frequencies, Magnetohydrodynamic Waves, Wave Excitation, Compression Waves, Magnetohydrodynamic Stability, Parametric Amplifiers

Scientific paper

A novel method for the excitation of ELF waves in the ionosphere is presented. It utilizes the nonlinear mixin of two ground- or satellite-produced radio frequency waves with a compressional Alfen wave. Parametric amplification thresholds are estimated to be between 10 and 20 MW peak power for 5-MHz pumps producing waves in the ELF range. Potential applications to ELF communications are discussed.

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