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DOI | 10.1002/2017GL076303 |
Intense Current Structures Observed at Electron Kinetic Scales in the Near-Earth Magnetotail During Dipolarization and Substorm Current Wedge Formation | |
Grigorenko, E. E.1,2; Dubyagin, S.3; Malykhin, A. Yu.1; Khotyaintsev, Yu V.4; Kronberg, E. A.5,6; Lavraud, B.7; Ganushkina, N. Yu3,8 | |
2018-01-28 | |
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:2页码:602-611 |
文章类型 | Article |
语种 | 英语 |
国家 | Russia; Finland; Sweden; Germany; France; USA |
英文摘要 | We use data from the 2013-2014 Cluster Inner Magnetosphere Campaign, with its uniquely small spacecraft separations (less than or equal to electron inertia length, lambda(e)), to study multiscale magnetic structures in 14 substorm-related prolonged dipolarizations in the near-Earth magnetotail. Three time scales of dipolarization are identified: (i) a prolonged growth of the B-Z component with duration <= 20 min; (ii) B-Z pulses with durations <= 1 min during the B-Z growth; and (iii) strong magnetic field gradients with durations <= 2 s during the dipolarization growth. The values of these gradients observed at electron scales are several dozen times larger than the corresponding values of magnetic gradients simultaneously detected at ion scales. These nonlinear features in magnetic field gradients denote the formation of intense and localized (approximately a few lambda(e)) current structures during the dipolarization and substorm current wedge formation. These observations highlight the importance of electron scale processes in the formation of a 3-D substorm current system. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300014 |
WOS关键词 | PLASMA SHEET ; STATISTICAL CHARACTERISTICS ; FLUX TRANSPORT ; FLOW-BRAKING ; CLUSTER ; MAGNETOSPHERE ; FIELD ; INSTABILITY ; BUNDLES |
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/27514 |
专题 | 气候变化 |
作者单位 | 1.RAS, Space Res Inst, Moscow, Russia; 2.Moscow Inst Phys & Technol, Dept Space Phys, Moscow, Russia; 3.Finnish Meteorol Inst, Helsinki, Finland; 4.Swedish Inst Space Phys, Uppsala, Sweden; 5.Max Planck Inst Solar Syst Res, Gottingen, Germany; 6.Ludwig Maximilian Univ Munich, Dept Earth & Environm Sci, Munich, Germany; 7.Univ Toulouse UPS, CNRS, Inst Rech Astrophys & Planetol, UMR 5277,CNES, Toulouse, France; 8.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Grigorenko, E. E.,Dubyagin, S.,Malykhin, A. Yu.,et al. Intense Current Structures Observed at Electron Kinetic Scales in the Near-Earth Magnetotail During Dipolarization and Substorm Current Wedge Formation[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):602-611. |
APA | Grigorenko, E. E..,Dubyagin, S..,Malykhin, A. Yu..,Khotyaintsev, Yu V..,Kronberg, E. A..,...&Ganushkina, N. Yu.(2018).Intense Current Structures Observed at Electron Kinetic Scales in the Near-Earth Magnetotail During Dipolarization and Substorm Current Wedge Formation.GEOPHYSICAL RESEARCH LETTERS,45(2),602-611. |
MLA | Grigorenko, E. E.,et al."Intense Current Structures Observed at Electron Kinetic Scales in the Near-Earth Magnetotail During Dipolarization and Substorm Current Wedge Formation".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):602-611. |
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