中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
ENSEMBLE EMPIRICAL MODE DECOMPOSITION OF THE MAGNETIC FIELD OF THE SUN AS A STAR

文献类型:期刊论文

作者Xiang NB(向南彬)1,2,3; Qu, Z. N.4
刊名ASTRONOMICAL JOURNAL
出版日期2016-03-01
卷号151期号:3
ISSN号0004-6256
关键词Sun: activity Sun: general Sun: magnetic fields
通讯作者Qu, ZN (reprint author), Sichuan Univ Sci & Engn, Sch Sci, Dept Phys, Zigong 643000, Peoples R China.
产权排序第一完成单位
英文摘要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.
学科主题Astronomy & Astrophysics
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]LATITUDE SOLAR-ACTIVITY ; WAVELET TRANSFORM ; TIME-SERIES ; PERIODICITY ; IRRADIANCE ; SIMULATIONS ; VARIABILITY ; INDEXES ; PHASE
收录类别SCI
原文出处http://iopscience.iop.org/article/10.3847/0004-6256/151/3/76/meta
语种英语
WOS记录号WOS:000371249100028
源URL[http://ir.ynao.ac.cn/handle/114a53/9349]  
专题云南天文台_太阳物理研究组
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
推荐引用方式
GB/T 7714
Xiang NB,Qu, Z. N.. 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..(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).

入库方式: OAI收割

来源:云南天文台

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