Long dynamo waves

被引：12
|
作者：
Mason, J [1 ]
Knobloch, E
机构：
[1] Univ Leeds, Dept Appl Math, Leeds LS2 9JT, W Yorkshire, England
[2] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA
[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
来源：
PHYSICA D-NONLINEAR PHENOMENA | 2005年 / 205卷 / 1-4期
基金：
英国工程与自然科学研究理事会;
关键词：
field dynamo theory; mKdV equation;
D O I：
10.1016/j.physd.2005.01.006
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A simple mean-field model of magnetic field generation in the Sun is considered. The model is characterized by spatially disjoint locations of the alpha and omega effects, believed to take place in the solar convection zone and in the solar tachocline, respectively, and includes alpha-quenching. The model admits a long wave dynamo instability, whose evolution is described by a perturbed mKdV equation. Solutions of this equation, the so-called snoidal waves, describe nonlinear waves of magnetic activity migrating towards the equator, as observed in the Sun. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 124
页数：25
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