Global and local processes of thin current sheet formation during substorm growth phase

被引：30

作者：

Runov, A. ^{[1
]}

Angelopoulos, V ^{[1
]}

Artemyev, A., V ^{[1
,2
]}

Weygand, J. M. ^{[1
]}

Lu, S. ^{[1
,3
]}

Lin, Y. ^{[4
]}

Zhang, X-J ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA

[2] Russian Acad Sci, Space Res Inst, Moscow, Russia

[3] Univ Sci & Technol China, Hefei, Peoples R China

[4] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2021年 / 220卷

基金：

美国国家科学基金会;

关键词：

Thin current sheet; Substorm growth phase; Magnetosphere-ionosphere coupling; MAGNETOTAIL CURRENT SHEET; CROSS-TAIL CURRENT; PLASMA SHEET; MAGNETIC-FIELD; EQUILIBRIUM STRUCTURE; CLUSTER OBSERVATIONS; ELECTRIC-CURRENT; PARTICLE MOTION; CURRENT WEDGE; RECONNECTION;

D O I：

10.1016/j.jastp.2021.105671

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Formation of thin current sheets in Earth's magnetotail is a critical element of the magnetosphere dynamics. The configuration and stability of these thin current sheets control the onset of magnetic reconnection and particle acceleration in the magnetotail during substorms and other geomagnetic activities. In recent years, multipoint observations, kinetic and hybrid simulations have significantly improved our understanding of the structure and dynamics of thin current sheets, including their ion kinetic physics. Global hybrid simulations have also revealed many details of ion kinetics in thin current sheet physics. In this paper we review current understanding of current sheet physics and discuss our recent observational and simulation results on thin current sheet formation, emphasizing the kinetics of current sheet thinning, multi-component ion populations, the role of electron anisotropy and ion agyrotropy, and the role of the ionosphere.

引用

页数：13

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