Physics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.2095p&link_type=abstract
Journal of Geophysical Research, vol. 86, Apr. 1, 1981, p. 2095-2098.
Physics
9
Atmospheric Electricity, E Region, Equatorial Electrojet, F Region, Ionospheric Drift, Annual Variations, Atmospheric Ionization, Diurnal Variations, Horizontal Orientation, Ionospheric Conductivity, Radar Echoes
Scientific paper
The horizontal east-west drift velocity of ionization irregularities in E region, and the vertical drift velocity of electrons in F region over Jicamarca (dip latitude approximately 1 deg N) are used to estimate the average diurnal variation of the east-west components of the electric fields in these two regions. The F region field is estimated from the vertical drift velocity by using the relationship derived earlier by Woodman (1970). The E region field is estimated from the horizontal east-west drift velocity by using a relationship derived by using realistic electrojet and conductivity models. The E region electric field thus obtained is found to be weaker at least by a factor of three than that estimated by Balsley and Woodman (1971). A comparative study shows that the east-west electric field in the F region is, most of the time, stronger than that in the E region, and also that the ratio of the E region field to the F region field systematically increases from forenoon to afternoon hours, and from pre-midnight to post-midnight hours.
Muralikrishna P.
Prakash Suprabh
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