Physics
Scientific paper
Mar 1966
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1966jatp...28..303r&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 28, no. 3, pp. 303-310
Physics
Scientific paper
The fluctuations in horizontal geomagnetic field H, during the night-time magnetic storms at stations within the equatorial electrojet are studied. The mean ratio of the amplitudes of corresponding fluctuations in H at Huancayo (dip 2°N) to that at San Juan (dip 52°N) is about 8.0 for the midday hours and about 1.7 for the midnight hours. A close similarity in the night-time fluctuations of [Delta]H is noticed at all equatorial stations in Peru, the mean amplitude having a maximum over the magnetic equator; within a distance of 6° latitude from the magnetic equator the amplitude is reduced to 0.6 times its equatorial value. It is concluded that the fluctuations in [Delta]H during the night-time hours are significantly enhanced over the magnetic equator for the American zone where the daytime equatorial electrojet currents are strongest, and are due to the remnant equatorial current system flowing during the night-time hours.
Kaushika N. D.
Rastogi R. G.
Trivedi Nalin Babulal
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