2009 Fiscal Year Final Research Report
Development of the dynamic control method of nutrient cycles based on the 3 dimensional monitoring systems in semi-enclosed bays
| Project/Area Number |
19206053
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | The University of Tokyo |
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Principal Investigator |
ISOBE Masahiko The University of Tokyo, 大学院・新領域創成科学研究科, 教授 (20114374)
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| Co-Investigator(Kenkyū-buntansha) |
KOIBUCHI Yukio 東京大学, 大学院・新領域創成科学研究科, 講師 (60349800)
HUANG Guagwei 東京大学, 大学院・新領域創成科学研究科, 准教授 (30292882)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 海岸 |
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| Research Abstract |
To quantify the material budget focusing on fine scale sand in coastal water body, we developed monitoring systems and conducted the field observations. From comparison of monitoring results of water qualities in urban area, SS increased about 10 times immediately after rain. On the other hand, turbidity in mangrove estuaries didn't change soon and the rate of increase was remarkably smaller than in urban river. In addition, TN (Total Nitrogen) and TP (Total Phosphorus) also had same tendencies. It showed that mangrove natural rivers moderate excess outflow of solids and nutrients to coastal area. Our observing system, successfully captured periods of timing, rainfall events, and subsequent changes in SS and nutrients in coastal region.
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