TO THE PROBLEM OF MHD WAVES PROPAGATION IN THE IONOSPHERIC E- REGION

George Jandieri
Page no. 1-13

The dispersion equation has been obtained describing propagation of very slow and long-period
MHD waves in the ionospheric E-region. Statistical characteristics of the low-frequency MHD
waves propagating in weakly ionized plasma are obtained for arbitrary correlation function of the
particles density fluctuations. Energy exchange between “fast” and “slow” Alfven waves and the
turbulent plasma flow is analyzed in the ray (optics) approximation using the stochastic eikonal
equation. Correlation function of the phase fluctuations and the broadening of the temporal
spectrum of scattered Alfven wave are calculated numerically for the anisotropic correlation
function using the experimental data.
Keywords: Alfven wave, plasma flow, statistical characteristics, broadening, irregularities