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The Corotating Variation of Heliospheric Quantities (II)——Evolutions in the Solar Cycle 20

Zhang Gong-liang1, Gao Yu-fen2, Lu Chen2, Xu Yuan-fang1   

  1. 1. Institute of Space Physics, Academia Sinica;
    2. Institute of Geophysics, State Seismological Bureau
  • Received:1985-06-04 Revised:1900-01-01 Online:1986-04-24 Published:1986-04-24

Abstract: The evolutions of corotating variation of some basic heliospheric parameters and energy parameters are studied in this paper for the solar cycle 20. It is shown that the ascending-phase single-peak distribution of solar wind velocity in the carrington rotation changes through the multi-peak one in the solar maximum into the stable two-peak ones in the descending and minimum phases. The number density, however, has always displayed a two-peak distribution since the solar maximum. Also shown in the statistical curves for both the ascending and descending phases is the exsistence of corotating compression disturbances with a marked enhancement of various densities and flux densities but without significant change in the velocity.

Key words: Meso-turbulence, Radar, Attenuation factors