Short Communications Relationship Between Es and the Earth's Magnetic Field at Middle Latitudes

Abstract

Attempts have been made, with some success, to find an association between changes in the intensity of Es ionization and in the intensity of the Earth's magnetic field (Wilkie and McNicol 1962; Fatkullin 1965; Goodwin 1965; Ovezgel'dyyev 1965). Nevertheless, the overall results of these investigations have not revealed a consistent relationship between Es and the Earth's field. This is partly due to the fact that daytime and night-time data, or data for the different seasons, were generally not treated separately. In the present paper an analysis of new observations is presented and the results of some previous analyses are also reappraised. A consistent relationship is found between night-time Es observations and the geomagnetic field.