Physics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10..904b&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 10, Sept. 1983, p. 904-907.
Physics
8
F Region, Ionospheric Drift, Ionospheric Electron Density, Radar Scattering, Backscattering, Doppler Radar, High Frequencies, Magnetohydrodynamic Stability
Scientific paper
The results of a five-day scan of 7 to 15 m wavelength F-region plasma irregularities near the poleward edge of the auroral zone and in the polar cap region from February-March, 1982 are reported. Around 70,000 Doppler spectra were obtained, with 10 percent displaying a backscattered power at least 3 dB over background noise. The HF radar unit was located in Cleary, AK, and the measurements were compared with concurrent data from the Chatanika radar for the same swept area. Good agreement was found for the plasma Doppler velocities measured by the incoherent scatter radar and the Chatanika radar, indicating that plasma irregularities drift with the ambient plasma. The average velocities measured over the 5-day period corresponded with those predicted by polar cap convection models, which also predict the drift of the irregularities with the ambient plasma.
Baker Kile B.
Greenwald Ray A.
Tsunoda Roland T.
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