Specific Features of the Distributions of the Hall Currents and Magnetic Field of Pс4 Pulsations

Resumo

The distributions of the intensities and directions of the Hall currents in the ionosphere have been determined by the given coordinates and intensities of magnrtospheric field-aligned currents (FAC). The examples of distributions calculated for three FAC show that the coincidence of specific features of the field of the Hall currents and the magnetic field on the ground level near the points of their projections is explained by the induction character of the formation of the Hall current. This makes possible to estimate the number, location, and intensity of field-aligned currents with experimentally constructed magnetic pulsation field distributions under the condition that the distances between the sources are larger than the ionospheric height. The presented solution of the equations for the field-lines and isolines of the Hall current intensity shows that the arcs of these curves are locally generated by a pair of equivalent field-aligned currents.