Vertical Motions in the Lower Ionosphere and Dynamics of the Ionospheric Plasma

This paper presents results of a measurement of the vertical plasma motion velocity in the lower ionosphere by the method of the resonant scattering of radio waves on artificial periodic irregularities created by powerful HF radio emission of the SURA heating facility. Altitude profiles and temporal dependences of the vertical velocity are obtained; the effect of atmospheric waves on them is discussed.