Response of equatorial electric field to polarity of interplanetary magnetic field

Details Response of equatorial electric field to polarity of interplanetary magnetic field Response of equatorial electric field to polarity of interplanetary magnetic field

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37.1403s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 37, Nov. 1989, p. 1403-1408.

Computer Science

3

Diurnal Variations, Equatorial Electrojet, Interplanetary Magnetic Fields, Polarized Radiation, Sunspots, Auroral Electrojets, Magnetic Anomalies, Magnetic Storms

Scientific paper

Diurnal patterns of equatorial electrojet strength and days of sunward and antisunward IMF during vernal and autumnal equinoxes of high sunspot activity years are compared to study the effect of the polarity of the IMF on the equatorial zonal electric field. It is shown that, compared to antisunward days in the vernal equinox, the electrojet strength is generally reduced around noon on sunward IMF days. This pattern is reversed in the autumnal equinox. The results suggest that the response of the noon time equatorial electric field to IMF polarity receives substantial contribution from eastward electric field disturbances associated with the ionospheric disturbance dynamo mechanism.

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