2017 Fiscal Year Final Research Report
Roles of the mantle transition zone and the core-mantle boundary region on the water circulation in the mantle
| Project/Area Number |
26400456
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Research Collaborator |
IWAMORI Hikaru 海洋研究開発機構, プログラムディレクター
NAKAO Atsushi 東京大学, 地震研究所, 特任研究員
NAKAGAWA Takashi 海洋研究開発機構, 主任研究員
KAMEYAMA Masanori 愛媛大学, 地球ダイナミクス研究センター, 教授
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 水循環 / マントル対流 / 沈み込み帯 / プルーム / マントル遷移層 / 核・マントル境界 |
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| Outline of Final Research Achievements |
Numerical simulation of mantle convection with water transport is performed to reveal mechanism that maintains water circulation during the history more than billions of years. We revealed the following mechanisms are important to control water transport and sea water absorption to the mantle during the Earth's history. (1) On-sided structure of the oceanic plate subduction, (2) water capacities of nominally unhydrous minerals and uppermost layer of the lower mantle, (3) efficiency of water mixing by the mantle convection.
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| Free Research Field |
地球内部物理学
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