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What do the solar activity indices represent?
Li KJ(李可军)1,2; Kong DF(孔德芳)1,3; Liang, HF4; Feng, W5; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTRONOMISCHE NACHRICHTEN
2014-05
卷号335期号:4页码:371-377
DOI10.1002/asna.201312016
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: General Sun: Radio Radiation Sunspots
摘要Sunspot number, sunspot area, and radio flux at 10.7 cm are the indices which are most frequently used to describe the long-term solar activity. The data of the daily solar full-disk magnetograms measured at Mount Wilson Observatory from 19 January 1970 to 31 December 2012 are utilized together with the daily observations of the three indices to probe the relationship of the full-disk magnetic activity respectively with the indices. Cross correlation analyses of the daily magnetic field measurements at Mount Wilson observatory are taken with the daily observations of the three indices, and the statistical significance of the difference of the obtained correlation coefficients is investigated. The following results are obtained: (1) The sunspot number should be preferred to represent/reflect the full-disk magnetic activity of the Sun to which the weak magnetic fields (outside of sunspots) mainly contribute, the sunspot area should be recommended to represent the strong magnetic activity of the Sun (in sunspots), and the 10.7 cm radio flux should be preferred to represent the full-disk magnetic activity of the Sun (both the weak and strong magnetic fields) to which the weak magnetic fields mainly contribute. (2) On the other hand, the most recommendable index that could be used to represent/reflect the weak magnetic activity is the 10.7 cm radio flux, the most recommendable index that could be used to represent the strong magnetic activity is the sunspot area, and the most recommendable index that could be used to represent the full-disk magnetic activity of the Sun is the 10.7cm radio flux. Additionally, the cycle characteristics of the magnetic field strengths on the solar disk are given. ((c) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
项目资助者NASA ; ONR ; NSF under Mount Wilson Institute ; 973 programs [2012CB957801, 2011CB811406] ; National Natural Science Foundation of China [11273057, 11221063] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6337
URL查看原文
归档日期2014-06-23
WOS记录号WOS:000335665600005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GROUP SUNSPOT NUMBERS ; POLAR FACULAE ; MOUNT-WILSON ; ACTIVITY RECONSTRUCTION ; CYCLE ; ROTATION
引用统计
被引频次:5[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/114a53/6252
专题太阳物理研究组
通讯作者Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
3.University of Chinese Academy of Sciences, Beijing 100863, China
4.Department of Physics, Yunnan Normal University, Kunming 650093, China
5.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
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Li KJ,Kong DF,Liang, HF,et al. What do the solar activity indices represent?[J]. ASTRONOMISCHE NACHRICHTEN,2014,335(4):371-377.
APA Li KJ,Kong DF,Liang, HF,Feng, W,&Li, KJ .(2014).What do the solar activity indices represent?.ASTRONOMISCHE NACHRICHTEN,335(4),371-377.
MLA Li KJ,et al."What do the solar activity indices represent?".ASTRONOMISCHE NACHRICHTEN 335.4(2014):371-377.
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