Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086062 |
An Explicit IMF B-gamma Dependence on Solar Wind-Magnetosphere Coupling | |
Reistad, J. P.1; Laundal, K. M.1; Ohma, A.1; Moretto, T.1; Milan, S. E.2 | |
2020-01-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; England |
英文摘要 | Presently, all empirical coupling functions quantifying the solar wind-magnetosphere energy-or magnetic flux conversion assume that the coupling is independent of the sign of the dawn-dusk component (B-gamma) of the Interplanetary Magnetic Field (IMF). In this paper we present observations strongly suggesting an explicit IMF B-gamma effect on the solar wind-magnetosphere coupling. When the Earth's dipole is tilted in the direction corresponding to northern winter, positive IMF B-gamma is found to on average lead to a larger polar cap than when IMF B-gamma is negative during otherwise similar conditions. This explicit IMF B-gamma effect is found to reverse when the Earth's dipole is inclined in the opposite direction (northern summer) and is consistently observed from both hemispheres. We interpret the different responses of the polar cap size due to the sign of IMF B-gamma to likely be a result of differences in the dayside reconnection rate. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513983400010 |
WOS关键词 | INTERPLANETARY MAGNETIC-FIELD ; ALIGNED CURRENTS ; HIGH-LATITUDE ; DIPOLE TILT ; SEMIANNUAL VARIATION ; RECONNECTION ; CONVECTION ; COMPONENT ; PATTERNS ; PLASMA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279502 |
专题 | 气候变化 |
作者单位 | 1.Univ Bergen, Birkeland Ctr Space Sci, Bergen, Norway; 2.Univ Leicester, Dept Phys & Astron, Leicester, Leics, England |
推荐引用方式 GB/T 7714 | Reistad, J. P.,Laundal, K. M.,Ohma, A.,et al. An Explicit IMF B-gamma Dependence on Solar Wind-Magnetosphere Coupling[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(1). |
APA | Reistad, J. P.,Laundal, K. M.,Ohma, A.,Moretto, T.,&Milan, S. E..(2020).An Explicit IMF B-gamma Dependence on Solar Wind-Magnetosphere Coupling.GEOPHYSICAL RESEARCH LETTERS,47(1). |
MLA | Reistad, J. P.,et al."An Explicit IMF B-gamma Dependence on Solar Wind-Magnetosphere Coupling".GEOPHYSICAL RESEARCH LETTERS 47.1(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论