[en] The main features of the method of combined wave diagnostics using the BUDVAR complex are presented. Examples of measurements on near-earth shock waves are given and the first results of a physical interpretation of processes taking place in the near-earth shock wave front are presented

[en] Analysis of space characteristics of VLF chories illumination zone in the upper ionosphere is conducted according to ''Interkosmos-19'' satellite data. It is shown, that this zone is located in the area of L-shell which are smaller than plasmapause L-shell. With the increase of this zone magnetic activity its spatial dimensions reduce and the north zone boundary shifts in accordance with plasmapause position change whereas the lower one remains practically unchanged (L=2.0-2.5). Differences in the times of chorus element arrival to different latitudes in the upper ionosphere are determined. It is shown, that the observed space and time characteristics of VLF chorus can be explained by the effect of concentration gradient in the area of plasmapause on the trajectories of VLF-waves and their approach to ionosphere

[en] A collisionless plasma heating due to a strong parametric instability of VLF oscillations, excited in the near zone of an antenna in the ionospheric plasma, is considered. An expression for the temperature is derived. (author)

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No abstract available