【作者】 章公亮； 高玉芬； 陆晨； 徐元芳；

【Author】 Zhang Gongliang (Institute of Space Physics,Chinese Academia of Sinica) Gao Yufen (Institute of Geophysics,State Seismological Bureau) Xu Yuanfang (Institute of Geophysics,Chinese Academy of Sciences)

【机构】 中国科学院空间物理研究所； 国家地震局地球物理研究所； 中国科学院地球物理研究所；

【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 min- imum 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 densities and flux densiy but without significant change in the velocity.更多还原