Ionospheric variations during the 13 September 1967 storm: Incoherent scatter radar results.

Abstract

The storm time variations in Ne, Te, and ion drifts are studied for a mid-latitude station, St. Santin (44.11N, 2.3E) using incoherent scatter radar data. It is observed that there is an increase in Ne with a corresponding decrease in Te at 350 km and the drifts are upward when compared with the quiet time drifts. These drifts are shown to be related to changes in magnetic field and hence they may be due to an electrodynamic effect. It is established from the Ne and Te profile changes that the differences in the ionospheric effects at different times reported earlier by the authors for the same storm are due to the storm-time effect and not due to a longitude effect.