Faraday rotation data from the beacon satellite S-66 obtained at Haringhata Field Station (dip 32°N) of the University of Calcutta has been used to compute the variation of electron content with latitude under magnetically ‘quiet’ and ‘active’ conditions. On a quiet day, the latitudinal variation of electron content is regular and pronounced, showing a maximum around a magnetic dip 33°N. On an active day, the electron content anomaly is nearly absent, and the peak is flattened out and shifted toward the magnetic equator. The results can be explained on the basis of a reduced vertical plasma drift velocity in the ionosphere at the magnetic equator on a magnetically active day as compared to a quiet day.
No takes yet. Share an insight, caveat, or question.
Basu et al. (1968) studied this question.