ABNORMAL REVERSALS OF MERIDIONAL AND ZONAL EQUATORIAL ELECTROJET CURRENTS

From the analysis of equatorial electrojet data from the Indian sector, it has been shown that the eastward zonal current due to normal electrojet is associated with a poleward meridional current. During periods of counter electrojet (westward zonal current), the meridional current is reversed to equatorward direction. Thus, there is a component of zonal current identified with D or Y field which is an integral part of the equatorial electrojet current and not associated with global S-q. The total current in meridional direction at low latitudes is a mixture of this equatorial electrojet associated current component over the global-S-q associated meridional current.