On thermal interaction between the Earth's core and mantle: An annular channel model
文献类型：期刊论文
| 作者 | Zhan, X.; Zhu, R. ; Liao, X.
|
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 159期号:1-2页码:96-108 |
| 关键词 | core convection geodynamo core-mantle interaction |
| 英文摘要 | Core-mantle thermal interaction has long been recognized as having a critical influence over the dynamics of the Earth's fluid core and long-term variations of the geomagnetic field. This paper studies the core-mantle thermal coupling by investigating nonlinear convection in an annular channel rotating about a vertical axis, heated uniformly from below with heat-flux anomalies on its sidewalls. In the absence of the heat-flux anomalies, convection is characterized by two steady travelling waves: one in the vicinity of the outer wall propagates against the sense of rotation and the other near the inner wall propagates in the same sense as rotation. In the presence of the heat-flux anomalies, however, non-linear convection either exhibits complete locking onto the corresponding lateral heterogeneity on the sidewall or becomes strongly time-dependent, interspersed with the intervals of nearly no fluid motions. Implications of the results for the core convection and geodynamo are discussed. (c) 2006 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | MAGNETIC-FIELD ; CONVECTION ; GEODYNAMO ; SYSTEMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000241327000008 |
| 源URL | [http://119.78.226.72/handle/331011/19442]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism & Geochronol Lab, SKLLE, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhan, X.,Zhu, R.,Liao, X.. On thermal interaction between the Earth's core and mantle: An annular channel model[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2006,159(1-2):96-108. |
| APA | Zhan, X.,Zhu, R.,&Liao, X..(2006).On thermal interaction between the Earth's core and mantle: An annular channel model.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,159(1-2),96-108. |
| MLA | Zhan, X.,et al."On thermal interaction between the Earth's core and mantle: An annular channel model".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 159.1-2(2006):96-108. |
入库方式： OAI收割
来源：上海天文台
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