| DOI: | 10.1002/2016GL069163
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| 论文题名: | Ion-scale structure in Mercury's magnetopause reconnection diffusion region |
| 作者: | Gershman D.J.; Dorelli J.C.; DiBraccio G.A.; Raines J.M.; Slavin J.A.; Poh G.; Zurbuchen T.H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9580
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| EISSN: | 1944-9311
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| 出版年: | 2016
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| 卷: | 43, 期:12 | | 起始页码: | 5935
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| 结束页码: | 5942
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| 语种: | 英语
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| 英文关键词: | flux rope
; flux transfer event
; kinetic plasma
; Mercury
; polar cap
; reconnection
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| Scopus关键词: | Diffusion
; Electric fields
; Magnetism
; Magnetopause
; Magnetoplasma
; Magnetosphere
; Organic pollutants
; Polychlorinated biphenyls
; Topology
; Tracking (position)
; Flux ropes
; Flux transfer events
; Kinetic plasmas
; Polar cap
; Reconnection
; Mercury (metal)
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| 英文摘要: | The strength and time dependence of the electric field in a magnetopause diffusion region relate to the rate of magnetic reconnection between the solar wind and a planetary magnetic field. Here we use ~150 ms measurements of energetic electrons from the Mercury Surface, Space Environment, GEochemistry, and Ranging (MESSENGER) spacecraft observed over Mercury's dayside polar cap boundary (PCB) to infer such small-scale changes in magnetic topology and reconnection rates. We provide the first direct measurement of open magnetic topology in flux transfer events at Mercury, structures thought to account for a significant portion of the open magnetic flux transport throughout the magnetosphere. In addition, variations in PCB latitude likely correspond to intermittent bursts of ~0.3–3 mV/m reconnection electric fields separated by ~5–10 s, resulting in average and peak normalized dayside reconnection rates of ~0.02 and ~0.2, respectively. These data demonstrate that structure in the magnetopause diffusion region at Mercury occurs at the smallest ion scales relevant to reconnection physics. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977134621&doi=10.1002%2f2016GL069163&partnerID=40&md5=eca5915e7a7ec2a692b0e7670e63e415
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10543
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Astronomy, University of Maryland, College Park, MD, United States
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| Recommended Citation: | |
Gershman D.J.,Dorelli J.C.,DiBraccio G.A.,et al. Ion-scale structure in Mercury's magnetopause reconnection diffusion region[J]. Geophysical Research Letters,2016-01-01,43(12).
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