Further study of the dynamics of two-dimensional MHD coherent structures - a large-scale simulation

被引：30
|
作者：
Wu, CC [1 ]
Chang, T
机构：
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90024 USA
[2] MIT, Ctr Space Res, Cambridge, MA 02139 USA
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2001年 / 63卷 / 13期
基金：
美国国家航空航天局; 美国国家科学基金会;
关键词：
magnetotail turbulence; self organized criticality; MHD turbulence simulation;
D O I：
10.1016/S1364-6826(00)00246-7
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：
We report new large-scale two-dimensional MHD simulations regarding the random onset and interactions of localized coherent structures as well as the long-range behavior of such stochastic systems. With a magnetic shear, multiple coherent structures are formed and aligned with the imposed current sheet due to fluctuation-induced, nonlinear instabilities. These results exhibit certain aspects of the intermittent turbulence model of sporadic localized reconnections for the Earth's magnetotail recently suggested by Chang. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1447 / 1453
页数：7
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