About the source of internal gravitational waves inside shadowed ionosphere

Variations of F2-layer base parameters under the influence of internal gravity waves (IGW) passing during magnetospheric substorm periods (the electron density maximum (Nsub(m)F2) and its altitude (hsub(m)F2) are calculated on the basis of analytical solution of continuity equation for electron density). It is assumed that IGW generation occurs due to the auroral electrojet dissipation energy. Neutral gas pressure and velocity variations necessary for calculations are found from the analytical solution of the linearized hydrodynamic equations with force and heat source in the approximation of double-jet auroral current system. Variations of Nsub(m)F2 and bsub(m)F2 which characterize ionospheric effect of IGW passing during the magnetospheric substorm were obtained experimentally from ionospheric data and they show the satisfactory agreement with the calculations