A Theory of Diurnal Magnetic Variations in Equatorial Regions and Conductivity of the Ionosphere E Region, Part II

Abstract

In succession to Part I, the electrical conductivity of the E region is calculated in some detail for two atmospheric models. It is shown that the factor, by which the tidal oscillation of the E region exceeds that at ground level, should be less than 10³, in order to give the observed lunar magnetic variation. The calculated lunar vertical movement of the E region is nearly in phase with that observed in South England and nearly opposite at Canberra. A possibility is shown that the calculated lunar vertical movement of the F2 region roughly agrees with that observed. It is suggested that the vertical drifts of the F2 region near the magnetic equator may be much greater than those in the other latitudes.