Viewing the "rush to the poles" through phase analysis
文献类型：期刊论文
| 作者 | Kong DF(孔德芳)1,2 ; Xiang NB(向南彬)1,2; Pan, GM3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2014-02 |
| 卷号 | 66期号:1页码:1-8 |
| ISSN号 | 0004-6264 |
| 关键词 | methods: data analysis Sun: activity Sun: filaments prominences |
| 通讯作者 | Kong, DF (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | At mid and low heliographic latitudes, filament activity shifts equatorward starting from the beginning of the solar cycle. At high latitudes, it migrates poleward. Solar filaments exhibit the "rush to the poles" close to solar maximum, when the solar polar magnetic field reverses polarity. In order to better understand the behavior of the "rush to the poles," we used cross-correlation analysis and wavelet transform methods for investigating the periodic characteristics and the phase relationship between two groups of the solar filaments at high latitudes observed during the period from 1919 March to 1989 December. The length of the solar cycle derived from the continuous wavelet transform is a function of latitude, but still shows a significant 11-yr cycle. The most significant periods of the solar filaments, respectively at higher latitudes than 50 degrees and 60 degrees, are 10.77 and 10.62 yr, using the wavelet transform method. From the cross-correlation analysis, the solar filaments at higher latitudes than 50 degrees have a lead of six months with respect to those at higher latitudes than 60 degrees. Different solar cycles exhibited different phase relationships between the two groups of solar filaments. The analysis of the cross-wavelet transform also indicates that the solar filaments at higher latitudes than 50 degrees lead those at higher latitudes than 60 degrees in the entire time interval. The relationship between the phase difference of the two groups of solar filaments and the intensity of solar activity is also discussed. What is more, the poleward shifting speeds are estimated. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | WAVELET TRANSFORM ANALYSES ; LATITUDE SOLAR-ACTIVITY ; CORONAL MASS EJECTIONS ; MAGNETIC-FIELDS ; ACTIVITY CYCLE ; TIME-SERIES ; SUNSPOT ACTIVITY ; MERIDIONAL FLOW ; FLARE ACTIVITY ; FILAMENTS |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/66/1/28 |
| 语种 | 英语 |
| WOS记录号 | WOS:000339426900029 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6258]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China |
| 推荐引用方式 GB/T 7714 | Kong DF,Xiang NB,Pan, GM. Viewing the "rush to the poles" through phase analysis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2014,66(1):1-8. |
| APA | Kong DF,Xiang NB,&Pan, GM.(2014).Viewing the "rush to the poles" through phase analysis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,66(1),1-8. |
| MLA | Kong DF,et al."Viewing the "rush to the poles" through phase analysis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 66.1(2014):1-8. |
入库方式： OAI收割
来源：云南天文台
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