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The shape of the sunspot cycle described by sunspot areas
Li KJ(李可军); Li, KJ
发表期刊ASTRONOMY & ASTROPHYSICS
1999-05
卷号345期号:3页码:1006-1010
产权排序第1完成单位
收录类别SCI
关键词Sun : Sunspots Sun : Activity
摘要The temporal behavior of the sunspot cycles 12-22, as described by quarterly mean values of sunspot areas, can be represented by a single function containing only two parameters: the starting time and the amplitude of a cycle. The parameters are determined for the more recent 11 sunspot cycles and examined for any predictable behavior. As a sunspot cycle progresses, the amplitude parameter can be better determined to within 10% at 4.3 years into its cycle, and the starting time can be well determined to within +/-0.3 year at 4.6 years into the cycle, thereby providing a good prediction both for the timing and size of sunspot maximum and for the behavior of the remaining 5-10 years of the cycle. Characteristics of the sunspot cycle shape are investigated in this paper. The shape of the sunspot area cycle is generally asymmetric, taking less time rising from minimum. to maximum than reaching the next minimum from the maximum, and cycles with larger amplitude are more asymmetric and take less time to reach maximum, the same as the so-called Waldmeier effect of the cycles described by the sunspot relative numbers.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6361
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WOS记录号WOS:000080528100034
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MAUNDER MINIMUM ; SOLAR-CYCLE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6029
专题太阳物理研究组
通讯作者Li, KJ
作者单位Yunnan Observatory, The Chinese Academy of Sciences, P.R. China
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GB/T 7714
Li KJ,Li, KJ. The shape of the sunspot cycle described by sunspot areas[J]. ASTRONOMY & ASTROPHYSICS,1999,345(3):1006-1010.
APA Li KJ,&Li, KJ.(1999).The shape of the sunspot cycle described by sunspot areas.ASTRONOMY & ASTROPHYSICS,345(3),1006-1010.
MLA Li KJ,et al."The shape of the sunspot cycle described by sunspot areas".ASTRONOMY & ASTROPHYSICS 345.3(1999):1006-1010.
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