I. Vekua Institute of Applied Mathematics;
Tbilisi State University;
Tbilisi;
Georgia;
M. Nodia Institute of Geophysics;
Tbilisi State University;
Tbilisi;
Georgia;
Faculty of Exact and Natural Sciences;
Tbilisi State University;
Tbilisi;
Georgia;
Planetary Waves; Sheared Zonal Flow; Ionosphere; Sheared Magnetic Field;