North-south asymmetry in storm time variation of f0F2

Abstract

The study of Dst ( f 0 F2) variations at equatorial and subtropical stations at different longitude zones for 1951–1956, show that at equatorial stations of any in the zones the variation indicates an increase of f 0 F2 during the main phase. The northern subtropical stations in any of the zones indicate a decrease of f 0 F2 during the main phase. The southern subtropical stations show decreased f 0 F2 for Asian and African zones but at American and Pacific zones an increase of f 0 F2 during main phase of the storm is noted.