Dynamics of the power spectrum of the interplanetary magnetic field behind a shock wave on February 1 - 2, 1982.

Venera 13 and 15 data are used to study the magnetic structure of the interplanetary stream behind the shock wave of February 1-2, 1982 as well as the power-spectrum dynamics of the IMF corresponding to this structure at frequencies ranging from 0.0001 to 0.1 Hz. It is shown that the level of MHD turbulence (the slope of the fluctuation spectrum and the spectral power density of the fluctuations) is different in different structural regions of the interplanetary disturbance. It is concluded that the evolution of the MHD turbulence spectrum can be used for a quantitative characterization of structural regions of the stream behind the shock front.