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Possible Explanation of the Different Temporal Behaviors of Various Classes of Sunspot Groups
Gao PX(高朋鑫)1,2,3; Li KJ(李可军)1,2,3,4; Li FY(李富羽)1,5; Gao, Peng-Xin(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
发表期刊SOLAR PHYSICS
2017-09-01
卷号292期号:9
DOI10.1007/s11207-017-1154-8
产权排序第1完成单位
收录类别SCI
关键词Methods: Data Analysis Sun: Activity Sun: Sunspots
摘要In order to investigate the periodicity and long-term trends of various classes of sunspot groups (SGs), we separated SGs into two categories: simple SGs (A/U <= 4.5, where A represents the total corrected whole spot area of the group in millionths of the solar hemisphere (msh), and U represents the total corrected umbral area of the group in msh); and complex SGs (A/U > 6.2). Based on the revised version of the Greenwich Photoheliographic Results sunspot catalogue, we investigated the periodic behaviors and long-term trends of simple and complex SGs from 1875 to 1976 using the Hilbert-Huang Transform method, and we confirm that the temporal behaviors of simple and complex SGs are quite different. Our main findings are as follows. i) For simple and complex SGs, the values of the Schwabe cycle wax and wane, following the solar activity cycle. ii) There are significant phase differences (almost antiphase) between the periodicity of 53.50 +/- 3.79 years extracted from yearly simple SG numbers and the periodicity of 56.21 +/- 2.92 years extracted from yearly complex SG numbers. iii) The adaptive trends of yearly simple and complex SG numbers are also quite different: for simple SGs, the values of the adaptive trend gradually increase during the time period of 1875 - 1949, then they decrease gradually from 1949 to 1976, similar to the rise and the maximum phase of a sine curve; for complex SGs, the values of the adaptive trend first slowly increase and then quickly increase, similar to the minimum and rise phase of a sine curve.
项目资助者National Natural Science Foundation of China(11673061, 11633008) ; Applied Basic Research Foundation of Yunnan Province, China(2014FB190) ; Foundation of Key Laboratory of Solar Activity of National Astronomical Observatories of Chinese Academy of Sciences(KLSA201507) ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences
语种英语
学科领域天文学
文章类型Article
ISSN0038-0938
URL查看原文
WOS记录号WOS:000410921800009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EMPIRICAL MODE DECOMPOSITION ; HILBERT SPECTRUM ; SOLAR DYNAMO ; FREQUENCY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11941
专题太阳物理研究组
通讯作者Gao, Peng-Xin(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
4.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing, China
5.University of Chinese Academy of Sciences, Beijing, China
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GB/T 7714
Gao PX,Li KJ,Li FY,et al. Possible Explanation of the Different Temporal Behaviors of Various Classes of Sunspot Groups[J]. SOLAR PHYSICS,2017,292(9).
APA Gao PX,Li KJ,Li FY,&Gao, Peng-Xin.(2017).Possible Explanation of the Different Temporal Behaviors of Various Classes of Sunspot Groups.SOLAR PHYSICS,292(9).
MLA Gao PX,et al."Possible Explanation of the Different Temporal Behaviors of Various Classes of Sunspot Groups".SOLAR PHYSICS 292.9(2017).
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