| Project/Area Number |
19340133
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HIBIYA Toshiyuki The University of Tokyo, 大学院・理学系研究科, 教授 (80192714)
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| Co-Investigator(Kenkyū-buntansha) |
ISODA Yutaka 北海道大学, 大学院・水産科学研究科, 准教授 (10193393)
KITADE Yujiro 東京海洋大学, 海洋科学部, 准教授 (50281001)
HASUMI Hiroyasu 東京大学, 気候システム研究センター, 准教授 (40311641)
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| Project Period (FY) |
2007 – 2008
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| Project Status |
Completed (Fiscal Year 2008)
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| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2008: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2007: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
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| Keywords | 海底境界混合 / 乱流ホットスポット / パラメタリゼーション / 流速鉛直シアー / ストレイン / 超深海乱流計 / 天皇海山列 / 深層海洋大循環 / 鉛直乱流拡散 / 超深海用乱流計 / 伊豆-小笠原海台 / 内部潮汐波 |
|---|
| Research Abstract |
By deploying a microstructure profiler over the Izu-Ogasawara Ridge and the Emperor Seamounts, we have succeeded, for the first time in Japan, in identifying mixing hotspots on the abyssal rough bottom. We have also found that these mixing hotspots can be best quantified in terms of Gregg-Heyney-Polzin (GHP) parameterization. Finally, abyssal mixing hotpots in the world's oceans quantified using GHP parameterization have been embedded into the ocean general circulation model to obtain the most accurate pattern of global thermohaline circulation.
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