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DOI | 10.1002/2017GL076542 |
Turbulent Kinematic Dynamos in Ellipsoids Driven by Mechanical Forcing | |
Reddy, K. Sandeep; Favier, Benjamin; Le Bars, Michael | |
2018-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:4页码:1741-1750 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Dynamo action in planetary cores has been extensively studied in the context of convectively driven flows. We show in this letter that mechanical forcings, namely, tides, libration, and precession, are also able to kinematically sustain a magnetic field against ohmic diffusion. Previous attempts published in the literature focused on the laminar response or considered idealized spherical configurations. In contrast, we focus here on the developed turbulent regime and we self-consistently solve the magnetohydrodynamic equations in an ellipsoidal container. Our results open new avenues of research in dynamo theory where both convection and mechanical forcing can play a role, independently or simultaneously. |
英文关键词 | Dynamo tides libration precession planetary magnetism |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427564300005 |
WOS关键词 | ELLIPTIC INSTABILITY ; NONLINEAR EVOLUTION ; MAGNETIC-FIELD ; TIDAL INSTABILITY ; ROTATING FLUID ; PRECESSION ; SIMULATIONS ; MODELS ; LIBRATION ; FLOWS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27511 |
专题 | 气候变化 |
作者单位 | Aix Marseille Univ, CNRS, Cent Marseille, IRPHE, Marseille, France |
推荐引用方式 GB/T 7714 | Reddy, K. Sandeep,Favier, Benjamin,Le Bars, Michael. Turbulent Kinematic Dynamos in Ellipsoids Driven by Mechanical Forcing[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):1741-1750. |
APA | Reddy, K. Sandeep,Favier, Benjamin,&Le Bars, Michael.(2018).Turbulent Kinematic Dynamos in Ellipsoids Driven by Mechanical Forcing.GEOPHYSICAL RESEARCH LETTERS,45(4),1741-1750. |
MLA | Reddy, K. Sandeep,et al."Turbulent Kinematic Dynamos in Ellipsoids Driven by Mechanical Forcing".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):1741-1750. |
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