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Hilbert-Huang transform analysis of long-term solar magnetic activity
Deng LH(邓林华)1,2
会议录名称Proceedings of SPIE-Proceedings of SPIE - The International Society for Optical Engineering
2018
卷号10615
DOI10.1117/12.2304730
产权排序第1完成单位
收录类别EI
会议名称9th International Conference on Graphic and Image Processing, ICGIP 2017
会议日期2017-10-14
会议地点Qingdao, China
摘要Astronomical time series analysis is one of the hottest and most important problems, and becomes the suitable way to deal with the underlying dynamical behavior of the considered nonlinear systems. The quasi-periodic analysis of solar magnetic activity has been carried out by various authors during the past fifty years. In this work, the novel Hilbert-Huang transform approach is applied to investigate the yearly numbers of polar faculae in the time interval from 1705 to 1999. The detected periodicities can be allocated to three components: the first one is the short-term variations with periods smaller than 11 years, the second one is the mid- term variations with classical periods from 11 years to 50 years, and the last one is the long-term variations with periods larger than 50 years. The analysis results improve our knowledge on the quasi-periodic variations of solar magnetic activity and could be provided valuable constraints for solar dynamo theory. Furthermore, our analysis results could be useful for understanding the long-term variations of solar magnetic activity, providing crucial information to describe and forecast solar magnetic activity indicators.
项目资助者Ocean University of China; University of Portsmouth
语种英语
学科领域太阳与太阳系
文章类型Conference article (CA)
出版者The International Society for Optical Engineering
ISBN号Ocean University of China; University of Portsmouth
ISSN号0277-786X
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文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12187
专题抚仙湖太阳观测站
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming; 650216, China
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing; 100012, China Corresponding author: Deng, Linhua
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GB/T 7714
Deng LH. Hilbert-Huang transform analysis of long-term solar magnetic activity[C]:The International Society for Optical Engineering,2018.
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