Role of middle-scale solar wind structures in the turbulence development behind the bow shock

Present study estimates contribution of the middle-scale solar wind structures (variations which are registered by a spacecraft during ~10 min intervals) in the turbulence development in the transition region behind the bow shock. The analysis is based on simultaneous measurements of plasma and/or magnetic field parameters in the solar wind, in the dayside magnetosheath and at the flanks. The study adopts measurements by Wind, THEMIS and Spektr-R spacecraft. Properties of magnetic field and ion flux fluctuation spectra are analyzed in the frequency range 0.01-4 Hz, which corresponds to transition from MHD to kinetic scales. The dynamics of turbulence properties in the magnetosheath is governed by large-scale disturbances while structures with smaller scales have effect during absence of large-scale structures.