Abstract
Ionospheric manifestation of ssc-associated ULF magnetic pulsations is investigated by analyzing the simultaneous data of HF Doppler frequency shift and magnetic H component on the ground. The theoretical Doppler velocities associated with magnetic pulsations are also calculated using the method of Sutcliffe and Poole (1989). Comparison of the observed phase difference between the ionospheric and magnetic pulsations with the one by theory reveals that in several of the pulsation events the ionospheric response can be controlled by the advection and/or compression mechanisms attributable to the pulsation EM fields.
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