Physical causes of solar cycle amplitude variability
文献类型：期刊论文
| 作者 | Cameron, R. H.1,2; Jiang, J.3 ; Schuessler, M.1; Gizon, L.1,4
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
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| 出版日期 | 2014-02-01 |
| 卷号 | 119期号:2页码:680-688 |
| 关键词 | solar cycle |
| 英文摘要 | The level of solar activity varies from cycle to cycle. This variability is probably caused by a combination of nonlinear and random effects. Based on surface flux transport simulations, we show that the observed inflows into active regions and toward the activity belts provide an important nonlinearity in the framework of Babcock-Leighton model for the solar dynamo. Inclusion of these inflows also leads to a reproduction of the observed proportionality between the open heliospheric flux during activity minima and the maximum sunspot number of the following cycle. A substantial component of the random variability of the cycle strength is associated with the cross-equatorial flux plumes that occur when large, highly tilted sunspot groups emerge close to the equator. We show that the flux transported by these events is important for the amplitude of the polar fields and open flux during activity minima. The combined action of inflows and cross-equatorial flux plumes provides an explanation for the weakness of the polar fields at the end of solar cycle 23 (and hence for the relative weakness of solar cycle 24). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333041000004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6424]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Max Planck Inst Sonnensyst Forsch, Gottingen, Germany 2.Natl Astron Observ Japan, Tokyo, Japan 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China 4.Univ Gottingen, Inst Astrophys, D-37073 Gottingen, Germany |
| 推荐引用方式 GB/T 7714 | Cameron, R. H.,Jiang, J.,Schuessler, M.,et al. Physical causes of solar cycle amplitude variability[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(2):680-688. |
| APA | Cameron, R. H.,Jiang, J.,Schuessler, M.,&Gizon, L..(2014).Physical causes of solar cycle amplitude variability.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(2),680-688. |
| MLA | Cameron, R. H.,et al."Physical causes of solar cycle amplitude variability".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.2(2014):680-688. |
入库方式： OAI收割
来源：国家天文台
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