2009 Fiscal Year Final Research Report
Evaluation on self-control function of temperature and water quality with surface-subsurface water exchange
| Project/Area Number |
19560518
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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 |
水工水理学
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| Research Institution | Daido Institute of Technology |
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Principal Investigator |
SUMI Tetsuya Daido Institute of Technology, 工学部, 准教授 (50303673)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 砂州伏流水 / 水温安定性 / 河床鉛直水交換 / わんど / たまり |
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| Research Abstract |
Investigations, including field observation mainly, shows that thickness of unsaturated zone above subsurface water level is important for temperature stability of river water by exchange flow across sandbars. In a riparian reach with a simple alternative sandbar, water exchange between surface water and subsurface water is combined by horizontal one through sandbars and vertical one through submerged bed surface, and shows importance to keep habitat's environment in pore of bed surface and backwater (embayment, pond).
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