Physics
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.3011v&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A3 , March 1, 1992, p. 3011-3017.
Physics
5
E Region, F Region, Magnetic Equator, Plasma Drift, Radar Measurement, Backscattering, Doppler Radar, Earth Ionosphere, Equatorial Regions, High Frequencies, Very High Frequencies
Scientific paper
Simultaneous observations of E region horizontal irregularity drifts by VHF backscatter radar and of F region vertical plasma drifts by HF Doppler radar conducted during day-time on a few magnetically quiet days at Trivandrum (dip 0.2 deg N) are presented. A comparative study of the two measurements indicates broadly (1) a resemblance in the daytime changes of the E-W component between the electric fields and (2) evidence of quasi-periodic electric field variations with periods ranging mostly from 1 to 2 hours. The electric fields derived from HF Doppler radar observations are somewhat lower than those deduced by VHF radar observations. The correlation coefficient for the variations of the electric fields measured by the two experimental techniques is found to be in the range of about 0.5 to 0.9.
Namboothiri S. P.
Rao Balarama P.
Viswanathan Sankaran K.
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