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太阳与地磁活动的1.3–1.7 yr振荡关系分析
Alternative TitleAnalysis of the 1.3-1.7 yr Oscillation Relationship between Solar and Geomagnetic Activities
钱雅文1,2; 冯松1,2; 邓林华3; 刘伟行1
Source Publication天文学报(Acta Astronomica Sinica)
Contribution Rank第3完成单位
Indexed ByCSCD ; 核心
Keyword太阳:活动区 太阳黑子 方法:数据分析

太阳和地磁活动中的1.3–1.7 yr周期研究对于理解日地空间耦合系统中可能发生的物理过程十分重要.黑子是太阳光球层上最突出的磁场结构, Ap指数则是表征全球地磁活动水平的重要指标.使用同步压缩小波变换得到太阳黑子数和地磁Ap指数的1.3–1.7 yr周期,并用互相关方法分析研究它们之间的相位关系.结果如下:(1)太阳黑子数和地磁Ap指数的1.3–1.7 yr周期呈现间歇性的演化特征,且随着时间的变化而不断变化;(2)地磁Ap指数在奇数活动周比相邻的偶数活动周的周期分量更高,表现出上下波动的变化特性;(3)地磁Ap指数和太阳黑子数的相位关系不是一成不变的,在大多数情况下地磁Ap指数滞后太阳黑子数,仅在第18和第22活动周黑子数在相位上滞后. 

Other Abstract

The 1.3-1.7yr periodic study of solar and geomagnetic activities is very important for understanding the possible physical processes in the solar-terrestrial cou-pling system. The sunspot is the most prominent magnetic eld structure in the solar photosphere, and the Ap index is an important indicator of global geomagnetic activity. The 1.3-1.7yr period of the sunspot number and the geomagnetic Ap index is obtained by the synchro-squeezing wavelet transform, and the phase relationship between them is studied by cross-correlation analysis. The main results are as following: (1)The 1.3-1.7 yr periods of the geomagnetic Ap index and sunspot number exhibit intermittent evolutionary characteristics, and change with time; (2)the geomagnetic Ap index has a higher periodic component in odd solar cycles than the neighboring even solar cycles, which is characterized by uctuations; (3)the phase relationship between geomagnetic Ap index and sunspot number is not always consistent, in most cases the geomagnetic Ap index lags behind the sunspot number, except in the 18th and 22th solar cycles.

Funding Project国家自然科学基金项目[11463003] ; 国家自然科学基金项目[11873089] ; 国家自然科学基金项目[U1531140] ; 云南省应用基础研究计划重点项目[2018FA035] ; 中国科学院太阳活动重点实验室开放课题[KLSA201715]
Funding Organization国家自然科学基金项目[11463003, 11873089, U1531140] ; 云南省应用基础研究计划重点项[2018FA035] ; 中国科学院太阳活动重点实验室开放课题[KLSA201715]
Subject Area天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::天文学
Citation statistics
Document Type期刊论文
Corresponding Author冯松
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
钱雅文,冯松,邓林华,等. 太阳与地磁活动的1.3–1.7 yr振荡关系分析[J]. 天文学报(Acta Astronomica Sinica),2019,60(1):33-41.
APA 钱雅文,冯松,邓林华,&刘伟行.(2019).太阳与地磁活动的1.3–1.7 yr振荡关系分析.天文学报(Acta Astronomica Sinica),60(1),33-41.
MLA 钱雅文,et al."太阳与地磁活动的1.3–1.7 yr振荡关系分析".天文学报(Acta Astronomica Sinica) 60.1(2019):33-41.
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