globalchange  > 气候减缓与适应
DOI: 10.1029/2012GL054701
论文题名:
Spontaneous formation of dipolarization fronts and reconnection onset in the magnetotail
作者: Sitnov M.I.; Buzulukova N.; Swisdak M.; Merkin V.G.; Moore T.E.
刊名: Geophysical Research Letters
ISSN: 0094-9418
EISSN: 1944-9149
出版年: 2013
卷: 40, 期:1
起始页码: 22
结束页码: 27
语种: 英语
Scopus关键词: Charge separations ; Full particle simulation ; Linear Stability ; Magnetic field line ; Magnetic island ; Magnetotail current sheet ; Spontaneous formation ; Thin current sheet ; Electric fields ; Ions ; Magnetic flux ; Magnetoplasma ; atmospheric electricity ; electron ; ion ; magnetic field ; magnetotail ; plasma ; two-dimensional modeling
英文摘要: We present full-particle simulations of 2-D magnetotail current sheet equilibria with open boundaries and zero driving. The simulations show that spontaneous formation of dipolarization fronts and subsequent formation of magnetic islands are possible in equilibria with an accumulation of magnetic flux at the tailward end of a sufficiently thin current sheet. These results confirm recent findings in the linear stability of the ion tearing mode, including the predicted dependence of the tail current sheet stability on the amount of accumulated magnetic flux expressed in terms of the specific destabilization parameter. The initial phase of reconnection onset associated with the front formation represents a process of slippage of magnetic field lines with frozen-in electrons relative to the ion plasma species. This non-MHD process characterized by different motions of ion and electron species generates a substantial charge separation electric field normal to the front. © 2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874894532&doi=10.1029%2f2012GL054701&partnerID=40&md5=74733ba7fb5f93f1cc9cd4fb976a5085
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6682
Appears in Collections:气候减缓与适应

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作者单位: Johns Hopkins University, Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, United States

Recommended Citation:
Sitnov M.I.,Buzulukova N.,Swisdak M.,et al. Spontaneous formation of dipolarization fronts and reconnection onset in the magnetotail[J]. Geophysical Research Letters,2013-01-01,40(1).
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