Nonlinear Equatorial Spread F.
NAVAL RESEARCH LAB WASHINGTON D C
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A numerical simulation of the nonlinear evolution of the collisional Rayleigh-Taylor instability using a set of equations appropriate for the equatorial F region ionosphere has been performed. Our results show that the irregularities produced by the instability grow on the bottomside of the F region peak, as predicted by linear theory, and then the irregularities nonlinearly bubble through to the topside, where linear theory predicts no irregularities. Fourier analysis of the irregularities show one-dimensional power-law power spectra for both the vertical and horizontal directions. Author
- Atmospheric Physics