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ENSEMBLE EMPIRICAL MODE DECOMPOSITION OF THE MAGNETIC FIELD OF THE SUN AS A STAR
Xiang NB(向南彬)1,2,3; Qu, Z. N.4; Qu, ZN (reprint author), Sichuan Univ Sci & Engn, Sch Sci, Dept Phys, Zigong 643000, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2016-03-01
卷号151期号:3
DOI10.3847/0004-6256/151/3/76
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: General Sun: Magnetic Fields
摘要The ensemble empirical mode decomposition (EEMD) analysis is utilized to extract the intrinsic mode functions (IMFs) of the solar mean magnetic field (SMMF) observed at the Wilcox Solar Observatory of Stanford University from 1975 to 2014, and then we analyze the periods of these IMFs as well as the relation of IMFs (SMMF) with some solar activity indices. The two special rotation cycles of 26.6 and 28.5 days should be derived from different magnetic flux elements in the SMMF. The rotation cycle of the weak magnetic flux element in the SMMF is 26.6 days, while the rotation cycle of the strong magnetic flux element in the SMMF is 28.5 days. The two rotation periods of the structure of the interplanetary magnetic field near the ecliptic plane are essentially related to weak and strong magnetic flux elements in the SMMF, respectively. The rotation cycle of weak magnetic flux in the SMMF did not vary over the last 40 years because the weak magnetic flux element derived from the weak magnetic activity on the full disk is not influenced by latitudinal migration. Neither the internal rotation of the Sun nor the solar magnetic activity on the disk (including the solar polar fields) causes the annual variation of SMMF. The variation of SMMF at timescales of a solar cycle is more related to weak magnetic activity on the full solar disk.
项目资助者National Natural Science Foundation of China(11273057, 11573065, 11503082) ; 973 programs(2012CB957801) ; Foundation of Sichuan University of Science and Engineering(2015RC43) ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2016-12-30
WOS记录号WOS:000371249100028
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LATITUDE SOLAR-ACTIVITY ; WAVELET TRANSFORM ; TIME-SERIES ; PERIODICITY ; IRRADIANCE ; SIMULATIONS ; VARIABILITY ; INDEXES ; PHASE
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被引频次:13[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/114a53/9349
专题太阳物理研究组
通讯作者Qu, ZN (reprint author), Sichuan Univ Sci & Engn, Sch Sci, Dept Phys, Zigong 643000, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
4.Department of Physics, School of Science, Sichuan University of Science and Engineering, Zigong 643000, China
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Xiang NB,Qu, Z. N.,Qu, ZN . ENSEMBLE EMPIRICAL MODE DECOMPOSITION OF THE MAGNETIC FIELD OF THE SUN AS A STAR[J]. ASTRONOMICAL JOURNAL,2016,151(3).
APA Xiang NB,Qu, Z. N.,&Qu, ZN .(2016).ENSEMBLE EMPIRICAL MODE DECOMPOSITION OF THE MAGNETIC FIELD OF THE SUN AS A STAR.ASTRONOMICAL JOURNAL,151(3).
MLA Xiang NB,et al."ENSEMBLE EMPIRICAL MODE DECOMPOSITION OF THE MAGNETIC FIELD OF THE SUN AS A STAR".ASTRONOMICAL JOURNAL 151.3(2016).
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