| Project/Area Number |
23510022
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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 |
Environmental dynamic analysis
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
OGURI Kazumasa 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, 技術研究副主幹 (10359177)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 堆積物－水境界 / 酸素濃度 / 酸素フラックス / 酸素極小域 / 海洋無酸素化 / 酸素極小層 / 八戸沖 |
|---|
| Research Abstract |
High precision O2 controller was developed to measure diffusive O2 uptake on board. O2 profiles at sediment surface taken from off Hachinohe (water depth of 500m, 112uM in bottom watear), 1000m (36uM) and 2000m (70uM) were measured with the O2 controller and O2 microelectrodes. O2 uptake in each core was calculated applying diffusion model, and the rates were 2.7-4.2, 0.6-0.7 and 1.4-1.6mm m-2 d-1, respectively. Carbon dioxide production rates were estimated to 2.1-3.1, 0.5 and 1.1-1.2 mmolC m-2 d-1, respectively to apply Redfield ratio.
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