Solar activity in extended cycles

doi:10.1029/2001JA000072

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	Solar activity in extended cycles
	Li KJ(李可军)1,2,3 ; Yun, HS 1,3; Liang HF(梁红飞)1,4 ; Gu XM(顾啸马)1,4 ; Li, KJ (reprint author), Natl Astron Observ, Beijing, Peoples R China.
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2002-07
卷号	107 期号:A7
DOI	10.1029/2001JA000072
产权排序	第1完成单位
收录类别	SCI
关键词	Solar Activity Cycle Sunspot Prediction Of Solar Activity
摘要	[1] It is well known that the first sunspot groups of a new cycle appear before sunspot minimum and continue to emerge for 12 or more years, ending after the following minimum. The period of time over which activity belonging to a specific cycle is observed is called the "extended activity cycle.'' A criterion for differentiating sunspot groups into their proper solar cycles during the overlapping, transitional period is proposed. The monthly sunspot group numbers during each extended activity cycle are constructed to show characteristics of solar activity for them. On the basis of the defining characteristics we estimate the conventional start of the beginning time of sunspot cycle 24 (the next cycle) to occur similar to2007.2 +/- 1 year, at the 68% percent level of confidence.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0148-0227
URL	查看原文
归档日期	2002-10-09
WOS记录号	WOS:000178982500035
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	SUNSPOT CYCLE ; MINIMUM
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/6051
专题	太阳物理研究组
通讯作者	Li, KJ (reprint author), Natl Astron Observ, Beijing, Peoples R China.
作者单位	1.Yunnan Observatory, Kunming, China 2.National Astronomical Observatories, Beijing, China. 3.Astronomy Program, SEES, Seoul National University, Seoul, Korea 4.United Laboratory of Optical Astronomy, CAS, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Li KJ,Yun, HS,Liang HF,et al. Solar activity in extended cycles[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2002,107(A7).
APA	Li KJ,Yun, HS,Liang HF,Gu XM,&Li, KJ .(2002).Solar activity in extended cycles.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,107(A7).
MLA	Li KJ,et al."Solar activity in extended cycles".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 107.A7(2002).

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