| Project/Area Number |
21560575
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Fukuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YAMASAKI Koreyoshi 福岡大学, 工学部, 教授 (00038100)
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| Co-Investigator(Renkei-kenkyūsha) |
KUSUDA Tetuya 北九州市立大学, 国際環境工学部, 教授 (50037967)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 濠諜窪地 / 貧酸素水塊 / 富栄養化 / ヘドロ / 浮泥 / 酸素消費 / 巻き上げ / 埋め戻し / 浚渫窪地 / 無酸素水塊 / 硫化水素 |
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| Research Abstract |
IIn this study, we discuss about how the hypoxic water spread to the Hakata Bay and how the sediment characteristics changes in effect on the hypoxic water, especially concerning two dredged hollows placed at the Muromi River mouth. Eastern long along-shelf transects, northern long off-shelf transects and horizontal grid transects were taken to observe water and sediment quality.
These results indicated that hypoxic water spilled out and spread from these hollows mainly at the Flood tide. And the behavior of the hypoxic water tends to move to the north east direction throughout the day. Hypoxia spilled out from the dredged hollow affected to the migration of such species and it may decrease biodiversity in the Hakata Bay.
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