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Registration Number

0215U001102, 0112U000564 , R & D reports

Title

Ionosphere disturbances as indicator of the global and local powerful phenomena in near - earth space

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Head

Tyrnov Oleg,

Registration Date

19-01-2015

Organization

Kharkov National University named after V.N. Karazin

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An object of the research is the parameters of ionospheric plasma and near-earth space under quiet conditions and during perturbations of a natural origin. The work aim is a study of features and physical mechanisms of significant variations in the ionospheric parameters under the influence of perturbations of a natural origin. The basic results. 1. For the first time the main features of the ionospheric D-region characteristics during the passage of atmospheric fronts are experimentally determined. This are quasi-periodic changes of reflected signals and radio noise, which gradually cover the great heights with an apparent velocity of ~ 350 - 340 m/s, as well as a decrease in the electron density by 1.2 - 2.2 times at altitudes z<80 km. It is shown that the passage of powerful atmospheric fronts can be generated infrasound waves with frequencies of 0.4 - 0.8 Hz, which penetrate to the heights of the E region of the ionosphere. On the basis of the dispersion relation obtained frequency whistler 7 - 29 kHz experimentally are determined. 2. It is established that in times of meteor showers in the night D-region of the ionosphere observed quasi-periodic changes in the reflected signals and radio noise for tens of minutes, caused by infrasound waves that are generated by the motion of charged fine dust particles. 3. For the first time on the basis of a long series of lithosphere, tropospheric, ionospheric and magnetospheric data shows that much part of the variation of ionosphere F2 region parameters from day to day is the result of constant interaction the ionosphere with other geosphere. In addition to the important role of planetary waves in these processes that can affect even the regular features of the spatio-temporal variations of the ionosphere, in order to explain the results obtained should allow the presence of non-linear relationships between the geosphere, which determine the behavior of the lithosphere - the troposphere - the ionosphere - magnetosphere as a single open dynamic system. The results of the work may be used for developing empirical and theoretical models of the ionosphere, studies of the physical mechanisms of relationships between different layers of the atmosphere, planning of radio systems work, as well as to assess the environmental impacts of processes in the near-Earth space to the human condition. They will be used also in the lecture courses on Radio Physics, Geophysics and Astronomy. They will be used for a better understanding of physical processes in the ionosphere during perturbations of a natural origin. The results of research will improve the level of international cooperation in the fields of geophysics and radio physics.

Product Description

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Гоков О.
Захаров І.
Поднос В.
Пушин В.
Федоренко
Федоренко Ю.

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2020-04-02