Daytime scintillations induced by high-power HF waves at Tromso, Norway

Details Daytime scintillations induced by high-power HF waves at Tromso, Norway Daytime scintillations induced by high-power HF waves at Tromso, Norway

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9211149b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Oct. 1, 1987, p. 11149-11157.

Computer Science

Sound

15

F Region, High Frequencies, Ionospheric Electron Density, Ionospheric Propagation, Scintillation, Daytime, Narrowband, Norway, Satellite Sounding, Scintillation Counters

Scientific paper

During March 1984, the high-power HF heating facility at Ramfjuordmoen near Tromso was used to modify the F-region in the daytime. The dominant scale length of the artificial irregularities at 225 km was found to be about 750 m when the heater radiated waves with O mode polarization at 5.4 MHz and developed an an estimated power density of 0.3 mW/sq m at the reflection height. The magnitude of the intensity scintillation S4 at 250 MHz was about 0.15 and the rms phase deviation computed over 82 s increased by 0.5 radian. This corresponds to an irregularity amplitude of about 3 percent for an assumed outer scale length of 1 km.

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