2009 Fiscal Year Final Research Report
New picture of mantle dynamics
| Project/Area Number |
19340124
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KURITA Kei The University of Tokyo, 地震研究所, 教授 (00111451)
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| Research Collaborator |
熊谷 一郎 北海道大学, 工学系, 任期付き研究員
ANNE Davaille , FAST, Orsay, France, 教授
STEPHANE Labrosse , ENS de Lyon, France, 教授
DAVID Baratoux , MPO, Toulouse, France, 准教授
市川 浩樹 愛媛大学, GCOE研究員
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| Project Period (FY) |
2007 – 2009
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| Keywords | マントル対流 / 熱対流 / 組成対流 / 構造不均質 / 境界層 / マントルトモグラフィー / プルーム / 自己組織化現象 |
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| Research Abstract |
A new model : the dynamics of the Earth's mantle is driven by thermal/compositional heterogeneities existing in the upper/lower boundaries is proposed based on laboratory experiments on model mantle. The compositional heterogeneities control the global convective flow through actions of topography of the boundary layer. The thermal heterogeneities by localized heat source/heat transfer also control the global convective thermal field. The convective system in turn is responsible for generation of these heterogeneities. We have focused on how the interactions between these processes organize the system.
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