【摘要】 本文统计分析了日球基本参数及能量参数的共转变化在第20太阳周中不同位相的演变。太阳风速度由上升年的单峰经历极大年的多峰演变为下降及极小年的稳定双峰.密度变化自极大年起即具有双峰特征.在上升及下降年速度变化不明显,但密度和流密度存在明显增高的共转压缩扰动。更多还原

【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.更多还原