Periodicity and hemispheric phase relationship in high-latitude solar activity
文献类型：期刊论文
| 作者 | Li QX(李启秀)1,2
|
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2008-05 |
| 卷号 | 249期号:1页码:135-145 |
| 关键词 | Sun : activity Sun : polar faculae methods : data analysis methods : nonlinear techniques |
| ISSN号 | 0038-0938 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Li, QX (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | POLAR FACULAE ; RECURRENCE PLOTS ; WAVELET ANALYSIS ; ACTIVITY CYCLE ; TIME-SERIES ; SUN |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs11207-008-9147-2 |
| 语种 | 英语 |
| WOS记录号 | WOS:000255115800010 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6124]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 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 |
| 推荐引用方式 GB/T 7714 | Li QX. Periodicity and hemispheric phase relationship in high-latitude solar activity[J]. SOLAR PHYSICS,2008,249(1):135-145. |
| APA | Li QX.(2008).Periodicity and hemispheric phase relationship in high-latitude solar activity.SOLAR PHYSICS,249(1),135-145. |
| MLA | Li QX."Periodicity and hemispheric phase relationship in high-latitude solar activity".SOLAR PHYSICS 249.1(2008):135-145. |
入库方式： OAI收割
来源：云南天文台
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