Observations of HF-enhanced ion waves in the ionosphere

Details Observations of HF-enhanced ion waves in the ionosphere Observations of HF-enhanced ion waves in the ionosphere

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..194d&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, March 1987, p. 194-197. Research sponsored by the Aerospace Corp.

Physics

6

F Region, High Frequencies, Ion Acoustic Waves, Plasma Diagnostics, Radar Tracking, Backscattering, Electrostatic Waves

Scientific paper

A 138.8 MHz backscatter radar has been deployed at Arecibo Observatory in Puerto Rico to monitor modifications to the ionospheric F region produced by a high-power, HF (3-5 MHz) radio wave. This radar provides a new diagnostic tool for examining wave production in the plasma at long (about 1 m) wavelengths. When high-power radio waves are transmitted, strongly enhanced ion-acoustic waves are detected. The temporal development of the HF-enhanced ion waves at 138.8 MHz exhibits an 'overshoot' behavior similar to that of HF-induced Langmuir waves and ion waves monitored in the past with the Arecibo 430 MHz radar.

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