Study of the Direct Penetration of Magnetospheric Convection Electric Field at low Latitudes with Bz-component and By-component of Interplanetary Magnetic Field (IMF) Variations during the magnetic storm on August 6th 1998

variations of the ground-based magnetic field measurements show a correlation between the magnetic disturbances observed at the auroral zone and equatorial zone. This correlation is an evidence of the direct effects of high latitudes fields, and currents at equatorial latitudes. A study is made to understand how the magnetospheric convection electric field penetrates at low latitudes during the magnetic storm on August 6th 1998. The results show a decreasing of the auroral activity and Super Dual Auroal Radar Network (SuperDARN) observation exhibits a falling of the magnetospheric convection during the penetration. This study reveals that IMF component Bz and By are dependently related to this disturbance event. A sudden deviation, usually appears on the magnetic field variation during storm events. It Often observed a simultaneous variations at high and low latitudes [1, 2]. This correlation is an evidence of a direct effect of high latitude electric fields and currents at low latitude, according to several authors [3-5]