1998 Fiscal Year Final Research Report Summary
Hydrodynamically-dominated Ecosystem in Mangrove Estuaries
| Project/Area Number |
09044166
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Field |
水工水理学
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| Research Institution | Osaka University |
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Principal Investigator |
NAKATSUJI Keiji Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (10029324)
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| Co-Investigator(Kenkyū-buntansha) |
GONG Wooi Kh マレーシア理科大学, 生物学部, 助教授
ONG Jin Eong マレーシア理科大学, 海洋海岸研究センター, 教授
DEGUCHI Ichiro Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (00029323)
NISHIDA Shuzo Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (40172663)
MURAOKA Kohji Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90029017)
JIN EONG Ong Universiti Sains Malaysia (Malaysia) , Marine Coastal Research Center, Professor
WOOI KHOON Gong Universiti Sains Malaysia (Malaysia) , School of Bioligical Science, Associate P
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| Project Period (FY) |
1997 – 1998
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| Keywords | Estuary / Mangrove / Creek and swamp system / mass-transport / stratification / Dispersion / 3-D and 2-D flow model / field surveys |
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| Research Abstract |
According to the field surveys in Bujang Estuary conducted by USM in the north-west side of Malaysia Peninsular provide some interesting physical features peculiar to mangrove estuaries ; namely, asymmetric pattern of tidal flow observed in an estuary mouth, stratification due to freshwater inflow and vertical mixing pattern in creeks depending on the tidal amplitude and rainfall especially in wet season ; and inundation of overflowing water from creeks into swamps, and vice versa. The Bujang Estuary is one of branches Sungai Merbok Estuary, and it is about 4 km with 18 bends and 50 m wide and 8 m deep at the mouth. Therefore, the scale of Bujang Estuary is very useful in field surveys. Based on these observation results, a coupling two-dimensional barotropic flow model (DIVAST) and three-dimensional baroclinic flow modelling (ODEM) in a creek and swamp system are developed and examined for integrating the transport processes of water, substances and nutrient. The proposed model is found to be good agreement with observation results in Bujang Estuary.
Alter examining the its potential, the model is also applied to improve understanding of physical processes quantitatively.
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