Abstract
The relations between the shifting of ionic clouds of the sporadic-E and the type of the daily variation of the terrestrial magnetism are discussed in more detail than in the first report. Moreover, a research is being made regarding the shifting of ionic clouds of the F2 layer.
From these results, it becomes necessary to consider the semi-diurnal variation of the ionosphere. Therefore, the semi-diurnal variation and its relation to the S field of the terrestrial magnetism are discussed. Also a research of the dynamo effect due to both the diurnal and the semi-diurnal variation is being conducted.
