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Sunspot groups at high latitude
Li KJ(李可军)1,2; Gu XM(顾啸马)1,3; Xiang, FY4; Liu, XH5; Chen XK(陈学昆)1; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2000-10-01
卷号317期号:4页码:897-901
DOI10.1046/j.1365-8711.2000.03758.x
产权排序第1完成单位
收录类别SCI
关键词Sun : Activity Sun : Evolution Sunspots
摘要Data of sunspot groups at high latitude (greater than or equal to 35 degrees), from the year 1874 to the present (2000 January), are collected to show their evolutional behaviour and to investigate features of the yearly number of sunspot groups at high latitude. Subsequently, an evolutional pattern of sunspot group number at high latitude is given in this paper. Results obtained show that the number of sunspot groups of a solar cycle at high latitude rises to a maximum value about 1 yr earlier than the time of the maximum of sunspot relative numbers of the solar cycle, and then falls to zero more rapidly. The results also show that, at the moment, solar activity described by the sunspot relative numbers has not yet reached its minimum, In general, sunspot groups at high latitude have not appeared on the solar disc during the last 3 yr of a Wolf solar cycle. The asymmetry of the high latitude sunspot group number of a Wolf solar cycle can reflect the asymmetry of solar activity in the Wolf solar cycle, and it is suggested that one could further use the high latitude sunspot group number during the rising time of a Wolf solar cycle, maximum year included, to judge the asymmetry of solar activity over the whole solar cycle.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000089857200017
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]NORTH-SOUTH ASYMMETRY ; SOLAR-ACTIVITY ; MAUNDER MINIMUM ; CYCLE ; NUMBER
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6031
专题太阳物理研究组
通讯作者Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.National Astronomical Observatories, Chinese Academy of Sciences, China
3.United Laboratory of Optical Astronomy, Chinese Academy of Sciences, Beijing 10080, China
4.Physical Department, Xiangtan University, Xiangtan 411105, China
5.Physical Department, Jiaozuo Education College, Jiaozuo 470021, China
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GB/T 7714
Li KJ,Gu XM,Xiang, FY,et al. Sunspot groups at high latitude[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2000,317(4):897-901.
APA Li KJ,Gu XM,Xiang, FY,Liu, XH,Chen XK,&Li, KJ .(2000).Sunspot groups at high latitude.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,317(4),897-901.
MLA Li KJ,et al."Sunspot groups at high latitude".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 317.4(2000):897-901.
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