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Synchronization of Sunspot Numbers and Sunspot Areas
Li KJ(李可军)1; Gao PX(高朋鑫)1,2; Zhan, LS3; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊SOLAR PHYSICS
2009-04
卷号255期号:2页码:289-300
DOI10.1007/s11207-009-9328-7
产权排序第1完成单位
收录类别SCI
关键词Sunspots Statistics Solar Cycle Observations
摘要Sunspot activity is usually described by either sunspot numbers or sunspot areas. The smoothed monthly mean sunspot numbers (SNs) and the smoothed monthly mean areas (SAs) in the time interval from November 1874 to September 2007 are used to analyze their phase synchronization. Both the linear method (fast Fourier transform) and some nonlinear approaches (continuous wavelet transform, cross-wavelet transform, wavelet coherence, cross-recurrence plot, and line of synchronization) are utilized to show the phase relation between the two series. There is a high level of phase synchronization between SNs and SAs, but the phase synchronization is detected only in their low-frequency components, corresponding to time scales of about 7 to 12 years. Their high-frequency components show a noisy behavior with strong phase mixing. Coherent phase variables should exist only for a frequency band with periodicities around the dominating 11-year cycle for SNs and SAs. There are some small phase differences between them. SNs lag SAs during most of the considered time interval, and they are in general more asynchronous around the minimum and maximum times of a cycle than at the ascending and descending phases.
项目资助者National Natural Science Foundation of China [40636031, 10583032] ; 973 Project [2006CB806300] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0038-0938
URL查看原文
归档日期2009-04-07
WOS记录号WOS:000264536800008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RECURRENCE PLOTS ; SOLAR-CYCLE ; WAVELET ANALYSIS ; TIME-SERIES ; LONG-TERM ; COHERENCE ; LATITUDE ; CLIMATE ; LENGTH
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6144
专题太阳物理研究组
通讯作者Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China
2.Graduate School of CAS, Beijing, 100049, China
3.Jingdezhen Ceramic Institute, Jingdezhan, 333001, Jiangxi, China
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Li KJ,Gao PX,Zhan, LS,et al. Synchronization of Sunspot Numbers and Sunspot Areas[J]. SOLAR PHYSICS,2009,255(2):289-300.
APA Li KJ,Gao PX,Zhan, LS,&Li, KJ .(2009).Synchronization of Sunspot Numbers and Sunspot Areas.SOLAR PHYSICS,255(2),289-300.
MLA Li KJ,et al."Synchronization of Sunspot Numbers and Sunspot Areas".SOLAR PHYSICS 255.2(2009):289-300.
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