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Asymmetry of solar activity in cycle 23
Li KJ(李可军)1; Chen HD(陈华东)1,2; Zhan, LS3; Li QX(李启秀)1,2; Gao PX(高朋鑫)1,2; Mu J(穆军)1,2; Shi XJ(石祥军)1,2; Zhu WW(朱玮文)1,2; Li, KJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110,Kunming E Suburb, Kunming 650011, Peoples R China.
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2009-04-01
Volume114
DOI10.1029/2009JA014061
Contribution Rank第1完成单位
Indexed BySCI
AbstractUsing sunspot groups and sunspot areas from May 1996 to February 2007, we find that solar activity for cycle 23 is dominant in the southern hemisphere, and our results enhance the inferred but uncertain conclusions obtained before. They are as follows: (1) each four cycles, the slope of the fitting straight lines of north-south asymmetry values changes its sign, and (2) the asymmetry signs of solar activity at both the low (>0 degrees - <10 degrees) and high (>= 25 degrees - <= 90 degrees) latitudinal bands are always the same but sometimes differ at the middle latitudinal band (>= 10 degrees - <25 degrees). When the former two are the same as the latter, solar activity is asymmetrically distributed in the hemispheres but symmetrically distributed when the former two differ from the latter. Moreover, asymmetry values of solar activity for the whole disk are always located between the first two and the latter and seem to be the averages of the first two and the latter, suggesting that the asymmetry of solar activity may be a function of latitude. In the forthcoming cycle 24, asymmetry of solar activity is inferred as being similar to cycle 12, and solar activity should remain dominant in the southern hemisphere.
Funding OrganizationNatural Science Funds of China [40636031, 10573034] ; Chinese Academy of Sciences ; [2006CB806300]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0148-0227
URL查看原文
Archive Date2009-04-13
WOS IDWOS:000264865500002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordNORTH-SOUTH ASYMMETRY ; N-S ASYMMETRY ; H-ALPHA FLARES ; NUMBERS R-N ; DIFFERENTIAL ROTATION ; STATISTICAL-ANALYSIS ; SUNSPOT GROUPS ; INDEX ; SOLAR-CYCLE-23 ; CATALOG
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Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6141
Collection太阳物理研究组
Corresponding AuthorLi, KJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110,Kunming E Suburb, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
2.School of Graduate, Chinese Academy of Sciences, Beijing, China
3.The Center of Advanced Education Technique, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Chen HD,Zhan, LS,et al. Asymmetry of solar activity in cycle 23[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2009,114.
APA Li KJ.,Chen HD.,Zhan, LS.,Li QX.,Gao PX.,...&Li, KJ .(2009).Asymmetry of solar activity in cycle 23.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,114.
MLA Li KJ,et al."Asymmetry of solar activity in cycle 23".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 114(2009).
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