Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075425 |
Coupled SKR Emissions in Saturn's Northern and Southern Ionospheres | |
Kivelson, Margaret G.1,2; Jia, Xianzhe2 | |
2018-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:7页码:2893-2900 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Kilometric radiation (SKR) emitted above Saturn's auroral ionosphere is modulated in intensity at periods close to the planetary rotation period; SKR periods differ slightly for sources in the north and in the south. Although there is good evidence that the signals are generated independently in the two hemispheres, it is also well established that during southern summer power emitted from the northern hemisphere is modulated in intensity not only at the northern period but also at the southern period, an observation that requires an explanation. We examine the idea that the signal in the north at the southern period is a secondary effect of the strong field-aligned current system centered at 270 degrees that drives the southern signal. Basing our analysis on studies of field-aligned current systems in the terrestrial and Jovian magnetospheres, we argue that the parallel electric fields that drive electrons into the southern auroral ionosphere and generate SKR are, at least in part, bidirectional and thus capable of accelerating electrons toward the opposite hemisphere where the secondary signal is detected with intensity lower than that of the locally generated signal. This interpretation implies that the atmospheric process that modulates the periodic responses can operate independently in each hemisphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435743400002 |
WOS关键词 | ROTATION PERIOD ; KILOMETRIC RADIATION ; RADIO ; PERIODICITIES ; MAGNETOSPHERE |
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/28174 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA; 2.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Kivelson, Margaret G.,Jia, Xianzhe. Coupled SKR Emissions in Saturn's Northern and Southern Ionospheres[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(7):2893-2900. |
APA | Kivelson, Margaret G.,&Jia, Xianzhe.(2018).Coupled SKR Emissions in Saturn's Northern and Southern Ionospheres.GEOPHYSICAL RESEARCH LETTERS,45(7),2893-2900. |
MLA | Kivelson, Margaret G.,et al."Coupled SKR Emissions in Saturn's Northern and Southern Ionospheres".GEOPHYSICAL RESEARCH LETTERS 45.7(2018):2893-2900. |
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