基于索周法探寻太阳黑子的磁极性周期  

Exploring the magnetic polarity period of sunspots based on the cycle exploring method

作　　者：李国庆 孙威 王颖 刘福窑[1,2] 王琳琳 郑晶晶 LI Guo-qing;SUN Wei;WANG Ying;LIU Fu-yao;WANG Lin-lin;ZHENG Jing-jing(School of Mathematics Physics and Statistics,Shanghai University of Engineering Science,Shanghai 201600,China;Center of Application and Research of Computational Physics,Shanghai University of Engineering Science,Shanghai 201620,China;School of Resources and Environment,Anqing Normal University,Anqing 246133,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resources Development and Application,Nanjing 210023,China;College of Geography,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]上海工程技术大学数理与统计学院,上海201600 [2]上海工程技术大学计算物理与应用研究中心,上海201620 [3]安庆师范大学资源环境学院,安庆246133 [4]江苏省地理信息资源开发与利用协同创新中心,南京210023 [5]南京师范大学地理科学学院,南京210023

出　　处：《地球物理学进展》2020年第6期2075-2082,共8页Progress in Geophysics

基　　金：国家自然科学基金(41807437、11803020、11533004、U2031145);上海工程技术大学研究生科研创新项目(19KY2107);安徽省自然科学基金(1808085QD99、KJ2017A371)联合资助。

摘　　要：太阳活动作为影响地球气候和地表环境变化的驱动因素.根据太阳黑子观测数据和磁性变化特征构建太阳黑子磁场磁性指数时间序列MI,基于索周法来研究其周期性变化规律.通过与算术平均周期法、傅里叶分析方法和Morlet小波分析方法的比较,发现利用索周法处理近270年太阳黑子磁极性数据,可以得到显著的22.25年的周期性规律.利用索周法得到的周期数值与谱分析方法探求结果相吻合.在寻求周期性规律方面,索周法可有效避免程序算法过程中存在准确分解信号、分辨率低、基函数选择等缺点;根据数据分析的计算需要,具有缩小误差范围、提高精度的可控优势.这一研究方法与主流的谱分析相辅相成发展,能有效覆盖多种周期的检测,为探究太阳运动及太阳活动周期性规律提供参考依据,进而为深入研究全球气候、地表环境变化开辟新的思路.Solar activity as a driving factor affecting changes in the earth’s climate and surface environment. According to the observation data of sunspots and the characteristics of magnetic change, the magnetic index MI of the solar magnetic field is constructed, and the periodic change rule is studied based on the cycle exploring method. Comparing with Arithmetic mean period method, Fourier analysis method and Morlet wavelet analysis method, it is found that using the cycle exploring method to process the magnetic polarity data of the sunspots for nearly 270 years can obtain a significant 22.25 years periodic rhythm. The cycle value obtained by the cycle exploring method is consistent with the search result of the spectral analysis method. In the search for periodic laws, the cycle exploring method can effectively avoid the shortcomings of accurate signal decomposition, low resolution, and selection of basis functions in the process of program algorithms;according to the calculation needs of data analysis, it has the controllable advantages of narrowing the error range and improving accuracy. This research method complements and develops with mainstream spectral analysis, and can effectively cover multiple periods of detection, provide a reference for exploring the periodic laws of solar motion and solar activity, and then open up new ideas for in-depth study of global climate and surface environment changes.

关 键 词：太阳黑子磁性数 索周法 22.25年周期 全球气候变化 周期性规律 

分 类 号：P353[天文地球—空间物理学]