Propagation of Electromagnetic Waves with Frequencies of the Beta Time Signal Service Through the Ionosphere in Different States at High Latitudes

A study is performed of ionospheric disturbances caused by an interplanetary shock wave on January 24, 2012, and its subsequent substorm. Results are presented from an analysis of how changes in the vertical electron density profile affect the amplitude and phase characteristics of signals with frequencies of the Beta time signal service, recorded at the Earth’s surface.