| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Outline of Final Research Achievements |
A pelagic-bed coupled numerical model for long-term prediction of bay environments was developed and applied to reproduction of 100-year time scale of processes in Tokyo Bay. Using the model, mechanism of formation of anoxic water and organic rich sediment was discussed. It has been pointed out that organic matter content has increased in spite of introduction of the total load control and one of the causes was considered as long-term accumulation mechanisms of organic rich sediment at the central part of the head of the bay, which did not mean overall extension of organic contamination. Numerical experiments on measures for environmental restoration of the bay indicate that their results are consistent with findings in terms of pelagic and bed processes revealed in field works, including the necessity of long-term implementation of restoration efforts for reducing the area of anoxia.
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