Formation of current density profile in tilted current sheets

被引：28
|
作者：
Petrukovich, A. A. [1 ]
Baumjohann, W. [2 ]
Nakamura, R. [2 ]
Runov, A. [2 ]
机构：
[1] Space Res Inst, Moscow 117997, Russia
[2] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
来源：
ANNALES GEOPHYSICAE | 2008年 / 26卷 / 12期
关键词：
Magnetospheric physics; Magnetotail; Plasma sheet;
D O I：
10.5194/angeo-26-3669-2008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate Cluster observations of strongly tilted sheets (flapping events) in the magnetotail. In accordance with the simple model of slip deformation (vertical differential displacement of neighboring flux tubes), the J(y) current density component in the tilted sheet remains constant and equal to that in the horizontal undisturbed sheet. However, a substantial J(z) component appears proportional to the local sheet tilt. Slip-type variations, having smaller scale than the full crossing, locally change the tilt and J(z) and may thus create a variety of non-classical (bifurcated, asymmetric etc) current density profiles.
引用
收藏
页码：3669 / 3676
页数：8
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