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Information × Registration Number 0223U005570, 0123U101251 , R & D reports Title Conducting measurements and comparative analysis of variations in the properties of the ionosphere and characteristics of the propagation of ELF and HF radio waves in the Arctic and Antarctica popup.stage_title Head Yampolski Yuriy M, д.ф.-м.н. Registration Date 25-12-2023 Organization Radio Astronomical Institute of the National Academy of Sciences of Ukraine popup.description2  The object of the study is the characteristics of the propagation of ELF fields and HF signals under conditions of regular ionospheric variations and sporadic disturbances. The purpose of the work is to analyze the properties of ionospheric disturbances and their influence on the propagation of ELF and HF radio waves due to high and middle latitudes. At this stage of the implementation of the Joint Research Program between the National Academy of Sciences of Ukraine and the EISCAT association, the main attention is focused on three main directions: 1) continue monitoring of registrations of electromagnetic ЕLF fields and HF signals in the Arctic, Antarctica and Europe; 2) analysis of variations in the characteristics of the ionosphere for high and middle latitude regions; 3) searching for connections connection between regular variations and powerful random disturbances in the ionosphere with the characteristics of HF radio signals and ELF fields. A long-term database of HF signal spectra in the Arctic and Antarctica has been developed. Continuous monitoring of HF signals in Poland has been ensured at the observatory of the Space Research Centre of the Polish Academy of Sciences at Borovets village. The responses of radio signal propagation characteristics to daily and seasonal ionospheric variations and magnetic storms are restored. The long-term dynamics of the "Weddell Sea" ionospheric anomaly were studied. The impact of sporadic Es layers on the spectral characteristics of HF signals for short radio lines is analyzed. The impact of the catastrophic eruption of the Tonga volcano on extreme local thunderstorm activity and the global level of atmospheric aerosols was investigated. A significant relationship between the temperature regime of the atmosphere and thunderstorm activity in the southeastern region of Asia has been established. The behavior of the SR characteristics in the current 11-year cycle of solar activity is reproduced. Product Description popup.authors Budanov Oleh V. Zalizovskiy Andriy V. Kashcheyev Serhiy Borysovych Koloskov Oleksandr Valeriyovych Lysachenko Volodymyr M. Lytvynenko Galyna V Pikulik Ivan I. Paznukhov Oleksiy V Reznichenko Artem I Soina Anna V Tokarska Lyudmyla Dmytrivna Topchii Marina A. popup.nrat_date 2023-12-25 Close