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The Long-term Behavior of the North-South Asymmetry of Sunspot Activity
Li KJ(李可军)1; Gao PX(高朋鑫)1,2; Zhan, LS3; Li, KJ (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Source PublicationSOLAR PHYSICS
2009-01
Volume254Issue:1Pages:145-154
DOI10.1007/s11207-008-9284-7
Contribution Rank第1完成单位
Indexed BySCI
KeywordSunspots Statistics Solar Cycle Observations
AbstractA new index, the cumulative difference of sunspot activity in the northern and southern hemispheres, respectively, is proposed to describe the long-term behavior of the North-South asymmetry of sunspot activity and to show the balance (or bias) of sunspot activity in the two solar hemispheres on a long-term scale. Sunspot groups and sunspot areas from June 1874 to January 2007 are used to show the advantage of the index. The index clearly shows a long-term characteristic time scale of about 12 cycles in the North South asymmetry of sunspot activity. Sunspot activity is found to dominate in the southern hemisphere in cycle 23, and in cycle 24 it is predicted to dominate still in the southern hemisphere. A comparison of the new index with other similar indexes is also given.
Funding OrganizationNatural Science Funds of China [40636031, 10573034] ; 973 project [2006CB806300] ; Chinese Academy of Sciences
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0038-0938
URL查看原文
Archive Date2009-01-05
WOS IDWOS:000261577100009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordN-S ASYMMETRY ; SOLAR DIFFERENTIAL ROTATION ; H-ALPHA FLARES ; NUMBERS R-N ; STATISTICAL-ANALYSIS ; ACTIVITY CYCLES ; SOLAR-CYCLE-23 ; INDEX ; PHASE ; PERIODICITIES
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Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6153
Collection太阳物理研究组
Corresponding AuthorLi, KJ (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China
2.Graduate School of CAS, Beijing, 100863, China
3.Jingdezhen Ceramic Institute, Jingdezhan, 333001, Jiangxi, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Gao PX,Zhan, LS,et al. The Long-term Behavior of the North-South Asymmetry of Sunspot Activity[J]. SOLAR PHYSICS,2009,254(1):145-154.
APA Li KJ,Gao PX,Zhan, LS,&Li, KJ .(2009).The Long-term Behavior of the North-South Asymmetry of Sunspot Activity.SOLAR PHYSICS,254(1),145-154.
MLA Li KJ,et al."The Long-term Behavior of the North-South Asymmetry of Sunspot Activity".SOLAR PHYSICS 254.1(2009):145-154.
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