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Characteristics of Suspended Particulate Matter and the Coastal Turbidity Maximum Areas of the Mekong River 被引量:1
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作者 vu duy vinh Tran Anh Tu +1 位作者 Tran Dinh Lan Nguyen Ngoc Tien 《Journal of Environmental Science and Engineering(A)》 2015年第2期67-78,共12页
This paper presents the results of application of a 3D (three-dimensional) numerical model to study on MTZ (maximum turbidity zone) in the coastal zone of Mekong River Delta. In this study, a 3D system model with ... This paper presents the results of application of a 3D (three-dimensional) numerical model to study on MTZ (maximum turbidity zone) in the coastal zone of Mekong River Delta. In this study, a 3D system model with combination of hydrodynamics--wave and suspended sediment transport was set up and validated with measured data in the study area. Based on calculated scenarios for the flood and the dry season, the results have shown appearance of MTZs in the coastal zone of Mekong River with suspended sediment concentration prevalent of 0.04-0.07 kg·m^3 (the dry season) and 0.05-0.1kg·m^3 (the flood season). The position and MTZs scale change with the interaction between fresh water and tidal oscillations. The MTZ occur more in the dry seasons compared to the wet season. The MTZs are prevalent located far away from estuaries about in 12-22 km (in the dry season), and 5-15 km in the flood season. 展开更多
关键词 MODELLING maximum turbidity zone suspended sediment transport Me Kong river coastal area.
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Zoning Marine Disposal for Dredged Material Management:A Case Study in Vietnam
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作者 Do Gia Khanh Do Thi Thu Huong +1 位作者 vu duy vinh Tran Dinh Lan 《Sustainable Marine Structures》 2019年第2期19-27,共9页
The fast growth of Hai Phong ports in the two last decades requires not only their upgrading facilities but also expanding port area and dredging their shipping channels(existing and new ones)that generate a huge amou... The fast growth of Hai Phong ports in the two last decades requires not only their upgrading facilities but also expanding port area and dredging their shipping channels(existing and new ones)that generate a huge amount of unused dredged materials.While all existing dumping sites in sea waters and on land get over capacity,looking for new dumping sites in sea waters is an urgent need.This study is to zone coastal waters of Hai Phong for suitable dumping sites meeting sustainable coastal management.Multi-criteria overlay analysis on GIS platform was employed with the criteria of natural conditions,environment and socio-economics for zoning coastal waters of Hai Phong.These criteria were detailed into eight subcriteria and then developed to eight GIS weighted thematic sub-layers of bottom depth,litho-hydrodynamics,ecosystems,distribution of benthos,distance to residential areas and tourist sites,distance to aquaculture area,distance to ecosystems and distance to conservation areas.Analysis results show the highly suitable zone for dredged material dumping in South,South West Hai Phong at depth below 15m to the deeper areas.Disposals of dredged materials in the zone would minimize impacts on the environment,ecology and socio-economics in surrounding waters and coastal areas. 展开更多
关键词 MCOA Marine dumping Shipping channel Sustainable criteria Environmental impacts Hai Phong ports
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