DOI: 10.1002/2014GL060249
论文题名: On the 3-D structure and dissipation of reconnection-driven flow bursts
作者: Drake J.J.F. ; Swisdak M. ; Cassak P.A. ; Phan T.D.
刊名: Geophysical Research Letters
ISSN: 0094-10612
EISSN: 1944-10343
出版年: 2014
卷: 41, 期: 11 起始页码: 3710
结束页码: 3716
语种: 英语
英文关键词: flow bursts
; magnetic reconnection
; particle energization
Scopus关键词: Earth sciences
; Geophysics
; Analytic modeling
; Energization
; flow bursts
; High speed flows
; Magnetic energies
; Magnetic reconnections
; Particle-in-cell simulations
; Pressure increase
; Ions
; atmospheric front
; boundary layer
; flow velocity
; jet flow
; magnetic field
; outflow
; plasma
; simulation
; three-dimensional modeling
; transition zone
英文摘要: The structure of magnetic reconnection-driven outflows and their dissipation are explored with 3-D particle-in-cell simulations. Outflow jets resulting from 3-D reconnection with a finite length x-line form fronts as they propagate into the downstream medium. A large pressure increase ahead of this "reconnection jet front" (RJF) due to reflected ions slows the front so that its velocity is well below that of the ambient ions in the core of the jet. As a result, the RJF slows and diverts the high-speed flow into the direction perpendicular to the reconnection plane. The RJF therefore acts as a thermalization site for the ion bulk flow and contributes significantly to the dissipation of magnetic energy during reconnection even though the outflow jet is subsonic. This behavior has no counterpart in 2-D reconnection. A simple analytic model predicts the front velocity and the fraction of the ion bulk flow energy that is dissipated. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901740500&doi=10.1002%2f2014GL060249&partnerID=40&md5=4d8a2dfa41ec0be458a2e03ffa8e835f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7876
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics, Institute for Physical Sciences and Technology, University of Maryland, College Park, MD, United States
Recommended Citation:
Drake J.J.F.,Swisdak M.,Cassak P.A.,et al. On the 3-D structure and dissipation of reconnection-driven flow bursts[J]. Geophysical Research Letters,2014-01-01,41(11).