Abstract
The interaction between ionosphere and neutral atmosphere at heights of the dynamo-region leads to the development of Alfven mode instability when the convection velocity exceeds the threshold value VΠ≈0.1km/s. The ionospheric Alfven resonator (IAR) plays an important role as an accumulator of turbulent energy. As a result, a turbulent boundary layer is formed consisting of anisotropic Alfven vortices captured in the IAR. Their anomalous dissipation contributes greatly to the substorm energy budget.
