【作者】 章公亮； 徐元芳； 高玉芬； 陆晨；

【Author】 Zhang Gongliang (Institute of Geophysics,Chinese Academy of Sciences) Xu Yuanfang (Institute of Geophysics,Chinese Academy of Sciences) Gao Yufen Lu Chen (Instituteof Geophysics,State Bureau of Seismology)

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

【摘要】 本文从统计分析的角度讨论了太阳活动对日球参数的影响.得到的重要结果是:包括磁场在内的一些参数的组合,即磁参数,是衡量、区分或识别不同太阳现象对日球影响的特征物理量.其中磁压热压比μ_p既是衡量太阳黑子活动、尤其是区分强耀斑活动影响,也是识别太阳活动极大年后,冕洞稳定高速流区在太阳活动上升及极大年的前兆的特征物理量.磁声波速C_as在太阳活动周不同位相,具有相当稳定的双峰日面经度分布,高磁声波速是太阳活动上升及极大年强磁场流区和极大年后稳定高速流区的共同特征.其它磁参数,如阿尔文波速C_a,磁压动能密度比μ_k以及总压力动能密度比π_k^*也都在一定程度上反映上述特性.更多还原

【Abstract】 The response of heliospheric quantities to the solar phenomena is discussed in this paper from a statistical point of view.An important result obtained is that the magnetic parameters defined by some combinations of the heliospheric quantities including magnetic field intensity are the physical characteristics that measure,distinguish or identify the influence of various solar phenomena on the heliosphere.Among these magnetic parameters the ratio of the magnetic to thermal pressureμ_p is one of the heliospheric characteristics that measures the influence of sunspot activity,distiguishes especially the influence exerted by the major flare activity,but also identifies the predecessor in the ascending and maximum phases for the region with a stable high-speed stream from coronal hole in the post-maximum phases.The magnetic sonic speed C_as possesses a considerably stable helio-longitudinal distribution in all the phases of the solar cycle,which implies a common feature for the region with a magnetically strong stream in the ascending and maximum phases and the region with a stable high-speed stream in the post-maximum phases.The other magnetic parameters such as the Alfven wave speed C_as as well as the ratios of the magnetic and total pressure to the kinetic energy densityμ_k andπ_k^* respectively,reflect also the above features to a certain extent.更多还原