| Project/Area Number |
19710013
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Nagasaki University |
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Principal Investigator |
MANDA Atsuyoshi Nagasaki University, 水産学部, 准教授 (00343343)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥3,740,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥2,700,000 (Direct Cost: ¥2,700,000)
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| Keywords | 物質循環 / 海洋環境 / 沿岸域 / 物質輸送 / 海洋科学 / 海洋物理・陸水学 / 環境質定量化・予測 / 環境変動 / シミュレーション工学 |
|---|
| Research Abstract |
Short-term variations in the residual currents in the Ariake Sea, which is a semi-enclosed basin located southwestern part of Japan, are investigated though intensive field campaigns and numerical experiments. Regardless of season, lateral shear dominates at spring tide and vertical shear is intensified at neap tide. The density-driven current dominates the overall structure of the residual current. The Ekman number is the dominant parameter that controls the overall structure of the density-driven current, indicating that the magnitude of the tidal mixing is the most important factor that controls the structure of the density-driven current. The current structure is not sensitive to the Kelvin number, which suggests the bay width is not a constraint on the density-driven current.
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