The used mathematical and numerical models of the gradient-drift instability are based on mathematical and numerical models of the Rayleigh-Taylor instability in the Earth’s equatorial ionosphere. These models are constructed as systems of electrodynamically matched multidimensional nonlinear equations described equatorial F-layer of the Earth’s equatorial ionosphere. These instabilities can generate Earth’s plasma irregularities with space-and-time scales that are characteristic of equatorial F-spread. First, the space-and-time model of the developed equatorial plasma bubble is obtained by a two-dimensional numerical simulation of the Rayleigh-Taylor instability. Second, the growth rates of the plasma gradient-drift instability are obtained from the dispersion equation based on physical parameters of the developed equatorial plasma bubble. The results of numerical experiments confirm the possibility of generating the gradient-drift instability of Earth’s equatorial ionospheric plasma.
Part of the book: Ionosphere