Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 19711 10.12737/stp-34201706 Results of current research Results of current research Results of current research Synchronization of geomagnetic and ionospheric disturbances over Kazan station Synchronization of geomagnetic and ionospheric disturbances over Kazan station Бархатова Оксана Михайловна Barhatova Oksana Mihaylovna o.barkhatova@inbox.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Косолапова Наталия Валентиновна Kosolapova Natalia Valentinovna Бархатов Николай Александрович Barhatov Nikolay Aleksandrovich nbarkhatov@inbox.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Ревунов Сергей Евгеньевич Revunov Sergey Evgenyevich revunov@inbox.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Нижегородский государственный архитектурно-строительный университет Нижний Новгород Россия Nizhny Novgorod State University of Architecture and Civil Engineering Nizhny Novgorod Russian Federation Нижегородский государственный педагогический университет имени Козьмы Минина Minin Nizhny Novgorod State Pedagogical University Нижегородский государственный педагогический университет им. К. Минина Россия Нижегородский государственный педагогический университет им. К. Минина Russian Federation Нижегородский государственный педагогический университет им. К. Минина Нижний Новгород Россия Minin Nizhny Novgorod State Pedagogical University Nizhny Novgorod Russian Federation Нижегородский государственный педагогический университет им. К. Минина Нижний Новгород Россия Minin Nizhny Novgorod State Pedagogical University Nizhny Novgorod Russian Federation 3 4 58 66 https://naukaru.ru/en/nauka/article/19711/view

The phenomena which accompany synchronization of night-time ionospheric and geomagnetic disturbances in an ULF range with periods 35–50 min near the mid-latitude station Kazan during a global magnetically quiet period have been analyzed. The comparison between dynamic spectra and wavelet patterns of these disturbances has revealed that spectral features of simultaneous disturbances of the F2-layer critical frequency and H, D, Z geomagnetic field components are similar. By studying spectral features of the F2-layer critical frequency over Kazan and disturbances of the H and D geomagnetic field components at magnetic stations which differ from Kazan station in longitude and latitude, we have established that the disturbances considered belong to the class of fast magnetosonic waves. The analysis of solar wind parameters, inter-planetary magnetic field (IMF), and values of the auro-ral index AL in the period under study has shown that this event is associated with IMF Bz component disturb-ances and occurs during substorm development.

The phenomena which accompany synchronization of night-time ionospheric and geomagnetic disturbances in an ULF range with periods 35–50 min near the mid-latitude station Kazan during a global magnetically quiet period have been analyzed. The comparison between dynamic spectra and wavelet patterns of these disturbances has revealed that spectral features of simultaneous disturbances of the F2-layer critical frequency and H, D, Z geomagnetic field components are similar. By studying spectral features of the F2-layer critical frequency over Kazan and disturbances of the H and D geomagnetic field components at magnetic stations which differ from Kazan station in longitude and latitude, we have established that the disturbances considered belong to the class of fast magnetosonic waves. The analysis of solar wind parameters, inter-planetary magnetic field (IMF), and values of the auro-ral index AL in the period under study has shown that this event is associated with IMF Bz component disturb-ances and occurs during substorm development.

 ionospheric disturbances geomagnetic field disturbances interplanetary magnetic field substorm magnetohydrodynamic disturbances ionospheric disturbances geomagnetic field disturbances interplanetary magnetic field substorm magnetohydrodynamic disturbances

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