| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Research Abstract |
Field observation of the salinity distribution and field experiments to enhance the discharge DO concentration were carried out aiming to reduce hypoxia and restoring of the bottom ecosystem. As the results, oversaturated DO discharge system was established. DO concentration was enhanced from 5.7mgL^<-1> to about 9mgL^<-1> at the mixture tank. Field observation during two days operation of the system revealed that bottom DO concentration was raised continuously and discharged mixed water spread about 1000 m along the shelf, about 300m transverse direction and about 1m depth from the bay bottom.
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