Periodicity and hemispheric phase relationship in high-latitude solar activity

doi:10.1007/s11207-008-9147-2

YNAO OpenIR > 太阳物理研究组

	Periodicity and hemispheric phase relationship in high-latitude solar activity
	Li QX(李启秀)1,2 ; Li, QX (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	SOLAR PHYSICS
	2008-05
卷号	249 期号:1 页码:135-145
DOI	10.1007/s11207-008-9147-2
产权排序	第1完成单位
收录类别	SCI
关键词	Sun : Activity Sun : Polar Faculae Methods : Data Analysis Methods : Nonlinear Techniques
摘要	The counts of the monthly averaged polar faculae, from observations of the National Astronomical Observatory of Japan (NAOJ), are examined by using linear and nonlinear approaches to find the periodicity characteristics of the polar faculae in the northern and southern hemispheres and the phase relationship between them. Both the cross-wavelet transform (XWT) and wavelet coherence (WTC) indicate the prominent period with 95% confidence level, namely the Schwabe cycle of about 11 years. The Schwabe cycle is in phase in the two hemispheres. Within the 11-year frequency band, there is a small phase difference during the period of 1966-1975 when the activity of polar faculae in the northern hemisphere slightly leads the one in the southern hemisphere. A cross-recurrence plot analysis and the line of synchronization (LOS) extracted from the cross-recurrence plot show further the phase difference between the two hemispheres. The LOS deviates significantly from the main diagonal during the period of 1965-1970 and LOS > 0, showing that the activity of polar faculae in the northern hemisphere leads in phase, which is in accordance with XWT and WTC analyses. Moreover, asynchronization is highest (about 30 months) during this period.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0038-0938
URL	查看原文
归档日期	2008-06-12
WOS记录号	WOS:000255115800010
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	POLAR FACULAE ; RECURRENCE PLOTS ; WAVELET ANALYSIS ; ACTIVITY CYCLE ; TIME-SERIES ; SUN
引用统计	被引频次：30[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/114a53/6124
专题	太阳物理研究组
通讯作者	Li, QX (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, People’s Republic of China 2.School of Graduates, CAS, Beijing, 100049, People’s Republic of China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Li QX,Li, QX . Periodicity and hemispheric phase relationship in high-latitude solar activity[J]. SOLAR PHYSICS,2008,249(1):135-145.
APA	Li QX,&Li, QX .(2008).Periodicity and hemispheric phase relationship in high-latitude solar activity.SOLAR PHYSICS,249(1),135-145.
MLA	Li QX,et al."Periodicity and hemispheric phase relationship in high-latitude solar activity".SOLAR PHYSICS 249.1(2008):135-145.

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Periodicity and Hemi（1447KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文