ИСТИНА

Analysis of 163 isolated substorms showed that their intensity, quantified as the maximum absolute value of AL index, increases with the velocity (V) and density (N) of the solar wind plasma, and hence with the dynamic pressure (P). The solar wind dynamic pressure is closely connected with magnetosphere energy loading, defined as the average values of the electric field of the Kan-Lee (EKL), and Newell parameter (dΦ/dt) for 1 h before the substorm onset. The growth of dynamic pressure values is accompanied by the increasing of solar wind driving required for the generation of substorms. This relationship between P and the values of the EKL and dΦ/dt is not observed in the others, arbitrarily selected periods. It is expected that as a result of the processes, which accompanied by the solar wind dynamic pressure increase, in the magnetosphere would be form a steady state conditions that increasingly impede the generation of substorms. Thus, the larger P, the more power of the solar wind should be loaded in the Earth's magnetosphere during growth phase to substorm generation. Subsequently, this energy will be unloaded during the substorm expansive phases creating increasingly intense magnetic bays.