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DOI | 10.1002/2017GL074291 |
MMS observations of oblique small-scale magnetopause flux ropes near the ion diffusion region during weak guide-field reconnection | |
Teh, W-L.1; Denton, R. E.2; Sonnerup, B. U. O.3; Pollock, C.4 | |
2017-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | Malaysia; USA |
英文摘要 | We report Magnetospheric Multiscale observations of a series of five small-scale magnetic flux ropes (FR1-5) embedded in the southward reconnection outflow during a magnetopause reconnection event with a small guide field (similar to 2.2 nT). These small-scale flux ropes (diameter similar to 3-11 ion inertial lengths) are found inside or near the ion diffusion region on the magnetosheath side of the magnetopause boundary layer. A consistent result for determining the axis orientation of the flux ropes is achieved using two different methods, namely, minimum variance analysis of the axial electric field and constrained minimum variance analysis of the magnetic field. Our results show that the axes of these flux ropes (FR1-4) form a large angle (53 degrees-66 degrees) to the guide-field orientation and are tilted toward the direction of the reconnecting field. These observations provide evidence for the presence of oblique ion-scale flux ropes near the ion diffusion region during reconnection with a weak guide field. Our findings are similar to those obtained from a 3-D kinetic simulation of turbulent reconnection. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406257400006 |
WOS关键词 | SINGLE X-LINE ; 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/28789 |
专题 | 气候变化 |
作者单位 | 1.Univ Kebangsaan Malaysia, Space Sci Ctr, Inst Climate Change, Bangi, Malaysia; 2.Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA; 3.Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA; 4.Denali Sci, Healy, AK USA |
推荐引用方式 GB/T 7714 | Teh, W-L.,Denton, R. E.,Sonnerup, B. U. O.,et al. MMS observations of oblique small-scale magnetopause flux ropes near the ion diffusion region during weak guide-field reconnection[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(13). |
APA | Teh, W-L.,Denton, R. E.,Sonnerup, B. U. O.,&Pollock, C..(2017).MMS observations of oblique small-scale magnetopause flux ropes near the ion diffusion region during weak guide-field reconnection.GEOPHYSICAL RESEARCH LETTERS,44(13). |
MLA | Teh, W-L.,et al."MMS observations of oblique small-scale magnetopause flux ropes near the ion diffusion region during weak guide-field reconnection".GEOPHYSICAL RESEARCH LETTERS 44.13(2017). |
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