Regular and chaotic spherical dynamos

被引：70

作者：

Grote, E ^{[1
]}

Busse, FH ^{[1
]}

Tilgner, A ^{[1
]}

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

PHYSICS OF THE EARTH AND PLANETARY INTERIORS | 2000年 / 117卷 / 1-4期

关键词：

regular spherical dynamo; chaotic spherical dynamo; magnetic fields;

D O I：

10.1016/S0031-9201(99)00101-6

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：

The generation of magnetic fields by thermal convection in rotating spherical shells has been simulated numerically in the case of Prandtl numbers of the order unity and Taylor numbers of the order 10(8). Regular and chaotic dipolar dynamos, hemispherical dynamos and quadrupolar dynamos have been found in different regions of the parameter space depending mainly on the magnetic Prandtl number P-m. The important role played by relaxation oscillations of the convection field is emphasized. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

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页码：259 / 272

页数：14

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