Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 103593 10.12737/stp-113202510 20TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 10–14, 2025, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA 20TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 10–14, 2025, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA 20TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 10–14, 2025, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA Ionosphere response to the impact of an extraordinary radio wave when located at a frequency close to the heating frequency Ionosphere response to the impact of an extraordinary radio wave when located at a frequency close to the heating frequency Бахметьева Наталия Владимировна Bahmetieva Nataliya Vladimirovna nv_bakhm@nirfi.unn.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Григорьев Геннадий Иванович Grigoriev Gennadiy Ivanovich grig19@list.ru Жемяков Илья Николаевич Zhemyakov Ilia Nikolaevich ilia.zhem@yandex.ru Калинина Елена Евгеньевна Kalinina Elena Evgenevna kalinina@nirfi.unn.ru Лисов Александр Александрович Lisov Aleksander Aleksandrovich lisov@nirfi.unn.ru Научно-исследовательский радиофизический институт Нижегородского государственного университета им. Н.И. Лобачевского Нижний Новгород Россия Radiophysical Research Institute Lobachevsky State University Nizhny Novgorod Russian Federation Научно-исследовательский радиофизический институт Нижегородского государственного университета им. Н.И. Лобачевского Нижний Новгород Россия Radiophysical Research Institute Lobachevsky State University Nizhny Novgorod Russian Federation Научно-исследовательский радиофизический институт Нижегородского государственного университета им. Н.И. Лобачевского Нижний Новгород Россия Radiophysical Research Institute Lobachevsky State University Nizhny Novgorod Russian Federation Научно-исследовательский радиофизический институт Нижегородского государственного университета им. Н.И. Лобачевского Нижний Новгород Россия Radiophysical Research Institute Lobachevsky State University Nizhny Novgorod Russian Federation Научно-исследовательский радиофизический институт Нижегородского государственного университета им. Н.И. Лобачевского Нижний Новгород Россия Radiophysical Research Institute Lobachevsky State University Nizhny Novgorod Russian Federation 22 09 2025 22 09 2025 11 3 80 90 21 03 2025 18 06 2025 https://zh-szf.ru/en/nauka/article/103593/view

The paper presents the results of experiments on the impact of powerful high-frequency radio emission from the SURA mid-latitude heating facility (56.1° N, 46.1° E) on Earth's ionosphere. The disturbance in the ionosphere was created by a radio wave of extraordinary polarization under conditions when the ordinary component of the powerful wave was not reflected by the ionosphere. The sounding of the disturbed region was carried out with a probe radio wave of the same polarization at a frequency higher than the heating frequency by 228–400 kHz. During the impact on the ionosphere, a weak scattered signal with an amplitude 40–60 dB lower than the amplitude of the specular reflection signal from the F-region was received from the height of reflection of the powerful radio wave. This means that the artificial disturbance of the plasma density occurred in the region of reflection of the powerful radio wave of extraordinary polarization. Possible causes of the disturbance are discussed.

The paper presents the results of experiments on the impact of powerful high-frequency radio emission from the SURA mid-latitude heating facility (56.1° N, 46.1° E) on Earth's ionosphere. The disturbance in the ionosphere was created by a radio wave of extraordinary polarization under conditions when the ordinary component of the powerful wave was not reflected by the ionosphere. The sounding of the disturbed region was carried out with a probe radio wave of the same polarization at a frequency higher than the heating frequency by 228–400 kHz. During the impact on the ionosphere, a weak scattered signal with an amplitude 40–60 dB lower than the amplitude of the specular reflection signal from the F-region was received from the height of reflection of the powerful radio wave. This means that the artificial disturbance of the plasma density occurred in the region of reflection of the powerful radio wave of extraordinary polarization. Possible causes of the disturbance are discussed.

 ionosphere plasma high-frequency heating sounding with a probe radio wave artificial periodic irregularities SURA heating facility ionosphere plasma high-frequency heating sounding with a probe radio wave artificial periodic irregularities SURA heating facility The work was financially supported by RSF (Grant No. 25-27-00031) The work was financially supported by RSF (Grant No. 25-27-00031)

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