[en] Long-period vibrations of magnetic field, observed in the region of compressed solar wind in flare fluxes and accompanied by rotation of polarization vector, are discussed. The considered phenomenon is explained as the result of superposition of Alfven and slow magnetoacoustic waves, occurring in result of transformation of linearly polarized Alfven waves, interacting with fast shock wave

[en] Passage of Alfven wave across the strong shock wave front is considered. Equations, describing the passage at arbitrary orientation of vectors of flux rate, external magnetic field and the wave vector of incident wave were obtained. Coefficients of incident wave transformation to MHD - waves of different types, depending on orientation of external magnetic field and the wave vector of incident wave were calculated

[en] Cycle variation of winter temperatures in Petersburg in 1775-1982 is considered. It is shown that distinct 11-, 22-year and more prolonged cycles are observed at variation of these temperatures. Variation spectrum of temperature Δt in winter monthes correlates with variation spectrum of magnetic activity, while variation spectrum of Δt in summer time correlates with variation spectrum of Wolf numbers. Secular cycle in air temperature variations is characterized by Δt value alternating; thus, the complete cycle has ∼ 180-year period, it verifies of the reality of double secular cycle of solar activity

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No abstract available