Phase analysis of sunspot group numbers on both solar hemispheres

	Phase analysis of sunspot group numbers on both solar hemispheres
	Deng LH(邓林华)1,2 ; Qu ZQ(屈中权)1 ; Yan XL(闫晓理)1 ; Wang, KR3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2013-01
卷号	13 期号:1 页码:104-114
关键词	methods: data analysis Sun: activity Sun: sunspots
ISSN号	1674-4527
通讯作者	Deng, LH (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Cross-correlation analysis and wavelet transform methods are proposed to investigate the phase relationship between the monthly sunspot group numbers in the solar northern and southern hemispheres. It is found that (1) the monthly sunspot group numbers in the northern hemisphere begin two months earlier than those in the southern one, which should lead to phase asynchrony between them but with a slight effect; (2) the Schwabe cycle length for the monthly sunspot group numbers in the two hemispheres obviously differs from each other, and the mean Schwabe cycle length of the monthly sunspot group numbers in the northern hemisphere is slightly larger than that in the southern one; (3) the monthly sunspot group numbers in the northern hemisphere precede those in the southern hemisphere during the years of about 1874-1927, after which, the southern hemisphere leads the northern hemisphere in the years 1928-1964, and then the northern hemisphere leads in time till the present.
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]	WAVELET ANALYSIS ; POLAR FACULAE ; ACTIVITY RECONSTRUCTION ; TIME-SERIES ; CYCLE ; ASYMMETRY ; SYNCHRONIZATION ; PERIODICITY ; TRANSFORM ; NORTH
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/1674-4527/13/1/011/meta
语种	英语
WOS记录号	WOS:000314863600011
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4697]
专题	云南天文台_抚仙湖太阳观测站
作者单位	1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3.North China Electric Power University, Beijing 102206, China
推荐引用方式 GB/T 7714	Deng LH,Qu ZQ,Yan XL,et al. Phase analysis of sunspot group numbers on both solar hemispheres[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(1):104-114.
APA	Deng LH,Qu ZQ,Yan XL,&Wang, KR.(2013).Phase analysis of sunspot group numbers on both solar hemispheres.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(1),104-114.
MLA	Deng LH,et al."Phase analysis of sunspot group numbers on both solar hemispheres".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.1(2013):104-114.