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DOI | 10.1029/2018GL077491 |
A Statistical Survey of the 630.0-nm Optical Signature of Periodic Auroral Arcs Resulting From Magnetospheric Field Line Resonances | |
Gillies, D. Megan1; Knudsen, David1; Rankin, Robert2; Milan, Stephen3; Donovan, Eric1 | |
2018-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:10页码:4648-4655 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; England |
英文摘要 | Advances in networks of ground-based optical instrumentation have enabled us to identify over 400 examples of auroral arcs with an infrequently observed, temporally periodic auroral morphology. This study focuses on these arcs observed via the 630-nm ("redline") auroral emission wavelength and connects them to global magnetospheric wave modes known as field line resonances (FLRs). We show that optical redline FLR auroral arcs occur most frequently near 20 and 4 magnetic local time, in contrast to nonperiodic redline arcs, which occur most frequently near midnight. We find that this periodic type of auroral arc is rare, occurring in approximately 5% of redline aurora observed by the Redline Emission Geospace Observatory all-sky imagers. We also show Swarm satellite observations of two separate instances of 630-nm FLR arcs with strong upward field-aligned currents of the order of 3-6 mu A/m(2). |
英文关键词 | field line resonance auroral arcs redline |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435262000014 |
WOS关键词 | SHEAR ALFVEN WAVES ; ENERGY ; REGIONS ; FORMS |
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/25671 |
专题 | 气候变化 |
作者单位 | 1.Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada; 2.Univ Alberta, Dept Phys, Edmonton, AB, Canada; 3.Univ Leicester, Dept Phys, Leicester, Leics, England |
推荐引用方式 GB/T 7714 | Gillies, D. Megan,Knudsen, David,Rankin, Robert,et al. A Statistical Survey of the 630.0-nm Optical Signature of Periodic Auroral Arcs Resulting From Magnetospheric Field Line Resonances[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(10):4648-4655. |
APA | Gillies, D. Megan,Knudsen, David,Rankin, Robert,Milan, Stephen,&Donovan, Eric.(2018).A Statistical Survey of the 630.0-nm Optical Signature of Periodic Auroral Arcs Resulting From Magnetospheric Field Line Resonances.GEOPHYSICAL RESEARCH LETTERS,45(10),4648-4655. |
MLA | Gillies, D. Megan,et al."A Statistical Survey of the 630.0-nm Optical Signature of Periodic Auroral Arcs Resulting From Magnetospheric Field Line Resonances".GEOPHYSICAL RESEARCH LETTERS 45.10(2018):4648-4655. |
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