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Assessment of saline water intrusion into Huong River in Dry Season

Journal of Shipping and Ocean Engineering 2011年第1期1卷 54-64页

作者： V.M. Cat Faculty of Coastal Engineering Water Resources University Ha Noi 100000 Vietnam

Most rivers in Vietnam flow directly to the sea where the interaction between fresh and salt water occurs. Because of uneven flow distribution through the year with only 20% annual flow in the dry season, while fresh water requirement for socio-economic activity in this season is much higher. With this situation, the simulation and finding out the mechanism of saline water intrusion into the estuary in general will help to suggest suitable solutions to control the situation. This paper presents results done at the Huong river estuary. Based on the data collected in current years and using MIKE11 softwave, number scenarios were simulated and found out the intruded process of saline water into the river. They will be very important parameters for which solutions to control negative effects to serve socio-economic development at the downstream of Huong river will be recommended and implemented in the later stage.

关键词： saline water intrusion averaged cross section hydrodynamics simulation.

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Deposition rate and interaction of human-riverine from height increase and permanent function of an 1180 years weir in Southeast China

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Science China Earth Sciences 2014年第2期57卷 323-336页

作者： SHANG YanJun PARK Hyeong-Dong YANG ZhiFa CHEN SiGuang LIN DaMing Key Laboratory of Engineering Geomechancis Institute of Geology and GeophysicsChinese Academy of Sciences Department of Energy Systems Engineering Seoul National University Institute of Cultural Relics Preservation of Yinxian County

This paper is to present an efficient approach to enriching the quantification model of human-riverine interactions and its anthropogenic impact by a retrospective study on one of the four most famous historical hydraulic projects in China,the Tuoshan *** was constructed in 833 AD and had trajectories of natural resilience and hydraulic engineering maturity more than thousand *** historical data and maturation procedure of the hydraulic system were used judiciously to examine the spatial patterns of the long-term water conservancy system with agriculture,urbanization and civilization of Ningbo City in Zhejiang Province,Southeast *** framework is assessed from historical perspective and the deposition rate(DR)is calculated by analyzing the continuous increase of the Tuoshan Weir *** results show that the declining DR during the 1180 years guaranteed the beneficial role the Tuoshan Weir played in spite of some negative river responses caused by the increase of sediment deposition and decrease of fresh water-retention *** following up revamped workings and well matured hydraulic system around the Tuoshan Weir also contribute a lot to the designed mission of the *** conclude that hydraulic system maturation is very important for the proper function and life span of huge hydraulic projects.

关键词： Tuoshan Weir flooding saline water intrusion deposition rate historical hydraulic engineering system

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Mapping of Salinity Ingress Using Galdit Model for Sirkali Coastal Region: A Case Study

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Journal of Geographic Information System 2016年第4期8卷 526-536页

作者： V. Satishkumar S. Sankaran Taufiquewarsi B. Amarender Ratnakar Dhakate CSIR-National Geophysical Research Institute Hyderabad India

A model is traced to evaluate and enumerate the significance of vulnerability to seawater intrusion due to excessive ground water withdrawals and some anthropogenic activities at coastal aquifers. So taking these issues into account few thematic maps which were influencing the saline water intrusion were prepared and overlaid using Geographical Information Systems (GIS). Based on GALDIT method, the groundwater vulnerability cartography has been assessed. To reckon the GALDIT index it requires six parameters like aquifer type, aquifer hydraulic conductivity, depth to groundwater level (AMSL), distance from the shore, impact of existing status of seawater intrusion and thickness of the aquifer. This GALDIT is the indicator scores and summing them and dividing by the total weight for determining the relative role of each one. Apart from this an identification of saltwater intruded area is done by using indicators of saltwater intrusion like Cl/(HCO3 + CO3) ratio and Na/Cl ratio. The vulnerability areas are classified as moderate with an area of 147.31 sq. km and low covering an area of 168.72 sq. km respectively based on the thematic maps. The final thematic map can be used for management of the coastal ground water resources.

关键词： saline water intrusion GALDIT Index Coastal Aquifer Vulnerability Assessment GIS

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Hydrogeology of Eastern Niger Delta: A Review

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Journal of water Resource and Protection 2020年第9期12卷 741-777页

作者： T. K. S. Abam H. O. Nwankwoala Institute of Geosciences and Space Technology Rivers State University Port Harcourt Nigeria Department of Geology Faculty of Science University of Port Harcourt Port Harcourt Nigeria

This paper characterizes the aquifer system of the Niger Delta for sustainable development of the groundwater resource. The heavy-dependence on groundwater in the region and the fears of its unsustainability triggered by the weak regulations, pollution, increasing user population and industrialization coupled with the present limited knowledge of the true geological condition prevailing within the groundwater domain of the Niger Delta are the considerations that compelled this review study. The hydraulic properties of the region’s aquifers are discussed. The Niger Delta is characterized by a complex multilayered aquifer system hosted in the Benin Formation with the main body of fresh water, with increasing occurrence of intercalating clay units towards the coast. Lithological analysis indicates the prevalence of unconsolidated sand and sandy gravels in the aquiferous horizons, presenting them as pervious and prolific aquifers. Reported hydrochemical data gathered from wells drilled suggest that the quality of groundwater in the Niger Delta is considered generally very good and compares favorably with WHO standards for drinking water. However, relatively high iron/manganese and chloride values are localized in time and space. In the coastal areas however, seawater intrusion has been identified as one of the major influences on hydrochemistry of groundwater in the shallow unconfined aquifers. Regional groundwater flow direction is from north to south. Changes in groundwater flow directions which occur at some places generally serve localized discharge areas. The resultant flow path eventually joins and feeds the major regional north-south flow direction. The increasing pressure on groundwater, the need for urgent attention and the absence of strong institutions and regulations have made the management of groundwater resources in the region a difficult task. Therefore, future ground water resources development in the Niger Delta requires adequate observational data, in

关键词： Hydrogeology Groundwater Quality saline water intrusion Aquifer water Table Niger Delta

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Deposition rate and interaction of human-riverine from height increase and permanent function of an 1180 years weir in Southeast China

Deposition rate and interaction of human-riverine from heigh...

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中国科学院地质与地球物理研究所2014年度（第14届）学术年会

This paper is to present an efficient approach to enriching the quantification model of human-rivcrinc interactions and its anthropogenic impact by a retrospective study on one of the four most famous historical hydraulic projects in China,the Tuoshan *** was constructed in 833 AD and had trajectories of natural resilience and hydraulic engineering maturity more than thousand *** historical data and maturation procedure of the hydraulic system were used judiciously to examine the spatial patterns of the long-term water conservancy system with agriculture,urbanization and civilization of Ningbo City m Zhejiang Province,Southeast *** framework is assessed from historical perspective and the deposition rate(DR)is calculated by anatyzing the continuous increase of the Tuoshan Weir *** results show that the declining DR during the 1180 years guaranteed the beneficial role the Tuoshan Weir played in spite of some negative river responses caused by the increase of sediment deposition and decrease of fresh water-retention *** following up revamped workings and well matured hydraulic system around the Tuoshan Weir also contribute a lot to the designed mission of the *** conclude that hydraulic system maturation is very important for the proper function and life span of huge hydraulic projects.

关键词： Tuoshan Weir flooding saline water intrusion deposition rate historical hydraulic engineering system

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