Возмущения критических частот F-области ионосферы, сопровождавшие старты ракеты “Союз” с космодрома Плесецк

Abstract

We analyzed temporal dependences of the F region critical frequencies of the ionosphere for three “Soyuz" rocket launches from the Plesetsk cosmodrome using data acquired by two ionosondes located near Tromso (Norway) and Longyearbyen (Svalbard archipelago, Norway). We detected quasi-periodic variations of these frequencies observed with delays of 30 – 60 minutes and about 70 min after rocket launches for ionosondes near Tromsø and Longyearbyen, respectively. Periods of wave disturbances were 30 - 60 min and amplitude were equal to 0.05 – 0.2 MHz. The horizontal velocities of disturbance propagation corresponded to the velocities of acoustic-gravity waves on the heights of the maximum of electron density.