Influence of HF radio waves on ion-cyclotron modes in the auroral ionosphere

Details Influence of HF radio waves on ion-cyclotron modes in the auroral ionosphere Influence of HF radio waves on ion-cyclotron modes in the auroral ionosphere

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.5981l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, June 1, 1988, p. 5981-5984.

Physics

4

Auroral Zones, Earth Ionosphere, High Frequencies, Ion Cyclotron Radiation, Radio Waves, Coupled Modes, Electrostatic Waves, Ionospheric Propagation, Low Frequencies, Sidebands

Scientific paper

High-power radio waves in the auroral ionosphere tend to further destabilize the linearly unstable electrostatic ion-cyclotron modes responsible for the long wavelength irregularities. The process is a four-wave parametric interaction involving a finite wave number pump, the ion-cyclotron modes, and two electrostatic sidebands. The nonlinear coupling arising through the ponderomotive force is sensitive to the wave vector of the pump k(o). The growth rate falls off rapidly with increasing value of the low-frequency wave number k.

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