On long-term solar activity at high latitudes

doi:10.1111/j.1745-3933.2007.00281.x

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	On long-term solar activity at high latitudes
	Li KJ(李可军)1 ; Mu J(穆军)1,2 ; Li QX(李启秀)1,2 ; Li, KJ (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2007-03-21
卷号	376 期号:1 页码:L39-L42
DOI	10.1111/j.1745-3933.2007.00281.x
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 interesting characteristics of long-term solar activity at high latitudes are reported as follows. (1) Two cyclic behaviours, but in anti-phase with each other, simultaneously exist at high latitudes: the magnetic fluxes in units of gauss of the line-of-sight magnetic fields at latitudes of 60 degrees-70 degrees, possibly representing the amplitude of solar magnetic activity at high latitudes, are in complete anti-phase with the solar activity at middle and low latitudes, usually represented by sunspot numbers. However, the numbers of filaments at latitudes of 60 degrees-90 degrees, possibly representing the complexity of solar magnetic activity at high latitudes, are strangely in complete anti-phase with the magnetic fluxes. (2) Two latitude migrations, but in opposite drift directions relative to each other, exist in a cycle: a poleward migration drifts from the middle latitudes toward the solar poles in the first half of a normal cycle, following an equatorward migration found from the solar poles towards the middle latitudes in the other half of the normal cycle. (3) It is inferred that polar faculae, a frequently observed phenomenon at high latitudes, are more related to the amplitude than to the complexity of solar magnetic activity at high latitudes, and they are in phase with the magnetic fluxes. (4) High-latitude flares, a violent active phenomenon at high latitudes, keep in step with neither the amplitude nor the complexity of solar magnetic activity at high latitudes; they seemingly occur just around the maximum times of both.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0035-8711
URL	查看原文
归档日期	2007-04-12
WOS记录号	WOS:000244886400009
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ACTIVITY CYCLE
引用统计	被引频次：4[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/114a53/6108
专题	太阳物理研究组
通讯作者	Li, KJ (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China 2.School of Graduate, CAS, Beijing, 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 KJ,Mu J,Li QX,et al. On long-term solar activity at high latitudes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,376(1):L39-L42.
APA	Li KJ,Mu J,Li QX,&Li, KJ .(2007).On long-term solar activity at high latitudes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,376(1),L39-L42.
MLA	Li KJ,et al."On long-term solar activity at high latitudes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 376.1(2007):L39-L42.

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