Large F-region electron-temperature enhancements generated by high-power HF radio waves

Details Large F-region electron-temperature enhancements generated by high-power HF radio waves Large F-region electron-temperature enhancements generated by high-power HF radio waves

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..953d&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, Sept. 1987, p. 953-956. Research supported by the Aerospace Corp. and Na

Physics

39

Electron Energy, F Region, Ionospheric Electron Density, Ionospheric Heating, Radio Frequency Heating, Geomagnetism, Ionospheric Ion Density, Spread F

Scientific paper

During recent experiments at Arecibo, Puerto Rico, large (1000-2000 K) enhancements in electron temperature have been observed when high-power radio waves reflect near the nighttime F region peak. The electron temperature enhancements are accompanied by significant (50-300 K) increases in ion temperature, large (10-15 percent) reductions in electron density, and strong HF-induced spread F. When large electron temperature enhancements develop, the ionosphere appears to become dynamically unstable, resulting in the production of geomagnetic field-aligned striations having elevated electron temperatures and depleted electron densities.

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