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DOI | 10.1029/2019GL086722 |
Dayside Field-Aligned Current Impacts on Ionospheric Irregularities | |
Follestad, A. Faehn1; Herlingshaw, K.2,3; Ghadjari, H.4; Knudsen, D. J.4; McWilliams, K. A.5; Moen, J., I1,2; Spicher, A.1; Wu, J.4; Oksavik, Kjellmar2,3 | |
2020-05-07 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; Canada |
英文摘要 | Global Navigation Satellite Systems (GNSS) are subject to disturbances caused by plasma irregularities in the ionosphere. Studies have suggested that in addition to the gradient drift and Kelvin-Helmholtz instabilities, electron precipitation may be important for phase scintillations in the dayside auroral region. This study combines in situ Swarm data with ground GNSS observations to investigate the potential role of filamentary field-aligned currents (FACs) on phase scintillations in the dayside auroral region by analyzing 22 events with phase scintillations exceeding 0.45 radians. We observe colocation between regions of severe phase scintillations and highly filamented FACs with fluctuations measured in the spacecraft frame of the order of 20 Hz. The observations indicate that filamentary FACs are crucial drivers for irregularities responsible for creating severe phase scintillations measured in the dayside auroral region and are thus of significant importance in the context of space weather impact on satellite communication. |
英文关键词 | FACs ionosphere scintillations aurora |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000543387400052 |
WOS关键词 | GPS PHASE SCINTILLATION ; HIGH-LATITUDES ; SIGNAL LOCK ; PLASMA ; REGION ; INSTABILITY ; PRECIPITATION ; CLIMATOLOGY ; BACKSCATTER ; SATELLITES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
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/249156 |
专题 | 气候变化 |
作者单位 | 1.Univ Oslo, Dept Phys, Oslo, Norway; 2.Univ Ctr Svalbard, Longyearbyen, Norway; 3.Univ Bergen, Dept Phys & Technol, Birkeland Ctr Space Sci, Bergen, Norway; 4.Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada; 5.Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK, Canada |
推荐引用方式 GB/T 7714 | Follestad, A. Faehn,Herlingshaw, K.,Ghadjari, H.,et al. Dayside Field-Aligned Current Impacts on Ionospheric Irregularities[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(11). |
APA | Follestad, A. Faehn.,Herlingshaw, K..,Ghadjari, H..,Knudsen, D. J..,McWilliams, K. A..,...&Oksavik, Kjellmar.(2020).Dayside Field-Aligned Current Impacts on Ionospheric Irregularities.GEOPHYSICAL RESEARCH LETTERS,47(11). |
MLA | Follestad, A. Faehn,et al."Dayside Field-Aligned Current Impacts on Ionospheric Irregularities".GEOPHYSICAL RESEARCH LETTERS 47.11(2020). |
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