NAOC Open IR
Phase analysis of sunspot group numbers on both solar hemispheres
Deng Linhua1; Qu Zhongquan1; Yan Xiaoli1; Wang Kairang2
2013
Source PublicationResearch in Astronomy and Astrophysics
ISSN1674-4527
Volume13Issue:1Pages:104
AbstractCross-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.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/42765
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.华北电力大学
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Deng Linhua,Qu Zhongquan,Yan Xiaoli,et al. Phase analysis of sunspot group numbers on both solar hemispheres[J]. Research in Astronomy and Astrophysics,2013,13(1):104.
APA Deng Linhua,Qu Zhongquan,Yan Xiaoli,&Wang Kairang.(2013).Phase analysis of sunspot group numbers on both solar hemispheres.Research in Astronomy and Astrophysics,13(1),104.
MLA Deng Linhua,et al."Phase analysis of sunspot group numbers on both solar hemispheres".Research in Astronomy and Astrophysics 13.1(2013):104.
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