28 March 2003 Nonlinear stage of propagation of perturbation in the topside ionosphere
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This paper is continued investigations of propagation of disturbances of plasma concentration in the topside ionosphere. Frequency dependence of amplification of the disturbances had been considered. Some phenomena, which obtained from modeling of propagation, are noted and are explained. Investigation of this problem, with the help of method of geometrical topics and method of dispersion equation, are carried out. A mathematical modeling of the nonlinear stage of instability development has been carried out. It is shown that in the region of a maximum enhancement of perturbations, the relative fluctuations of plasma density can make up several tens of percent.
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V. B. Ivanov, V. B. Ivanov, M. V. Tolstikov, M. V. Tolstikov, } "Nonlinear stage of propagation of perturbation in the topside ionosphere", Proc. SPIE 5027, Ninth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics, (28 March 2003); doi: 10.1117/12.497337; https://doi.org/10.1117/12.497337

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