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题名: Long-term changes in the north-south asymmetry of solar activity: a nonlinear dynamics characterization using visibility graphs
作者: Zou, Y;  Donner, RV;  Marwan, N;  Small, M;  Kurths, J
刊名: NONLINEAR PROCESSES IN GEOPHYSICS
出版日期: 2014
卷号: 21, 期号:6, 页码:1113-1126
关键词: TIME-SERIES ;  SUNSPOT NUMBERS ;  COMPLEX NETWORKS ;  CYCLE ;  SYNCHRONIZATION ;  CLIMATE ;  RECORDS ;  MODELS
学科分类: Physics
DOI: 10.5194/npg-21-1113-2014
通讯作者: Donner, RV (reprint author), Potsdam Inst Climate Impact Res, POB 601203, D-14412 Potsdam, Germany.
部门归属: [Zou, Y.] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China
英文摘要: Solar activity is characterized by complex dynamics superimposed onto an almost periodic, approximately 11-year cycle. One of its main features is the presence of a marked, time-varying hemispheric asymmetry, the deeper reasons for which have not yet been completely uncovered. Traditionally, this asymmetry has been studied by considering amplitude and phase differences. Here, we use visibility graphs, a novel tool of nonlinear time series analysis, to obtain complementary information on hemispheric asymmetries in dynamical properties. Our analysis provides deep insights into the potential and limitations of this method, revealing a complex interplay between factors relating to statistical and dynamical properties, i.e., effects due to the probability distribution and the regularity of observed fluctuations. We demonstrate that temporal changes in the hemispheric predominance of the graph properties lag those directly associated with the total hemispheric sunspot areas. Our findings open a new dynamical perspective on studying the north-south sunspot asymmetry, which is to be further explored in future work.
资助者: National Natural Science Foundation of China [11305062, 11135001, 11075056]; Specialized Research Fund (SRF) for the Doctoral Program [20130076120003]; SRF for ROCS, SEM; German Academic Exchange Service (DAAD); Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF151CJ1]; Australian Research Council Future Fellowship [FT110100896]; Federal Ministry for Education and Research (BMBF) via the Potsdam Research Cluster for Georisk Analysis, Environmental Change and Sustainability (PROGRESS); project CoSy-CC2 [01LN1306A]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000346142900004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15819
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Recommended Citation:
Zou, Y,Donner, RV,Marwan, N,et al. Long-term changes in the north-south asymmetry of solar activity: a nonlinear dynamics characterization using visibility graphs[J]. NONLINEAR PROCESSES IN GEOPHYSICS,2014,21(6):1113-1126.
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