| Records |
| Author |
Lu, C.; Xin, P.; Kong, J.; Li, L.; Luo, J. |
| Title |
Analytical solutions of seawater intrusion in sloping confined and unconfined coastal aquifers |
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Journal Article |
| Year |
2016 |
Publication |
Water Resources Research |
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| Volume |
52 |
Issue |
9 |
Pages |
6989-7004 |
| Keywords |
seawater intrusion, sloping coastal aquifer, analytical solution |
| Abstract |
Abstract Sloping coastal aquifers in reality are ubiquitous and well documented. Steady state sharp-interface analytical solutions for describing seawater intrusion in sloping confined and unconfined coastal aquifers are developed based on the Dupuit-Forchheimer approximation. Specifically, analytical solutions based on the constant-flux inland boundary condition are derived by solving the discharge equation for the interface zone with the continuity conditions of the head and flux applied at the interface between the freshwater zone and the interface zone. Analytical solutions for the constant-head inland boundary are then obtained by developing the relationship between the inland freshwater flux and hydraulic head and combining this relationship with the solutions of the constant-flux inland boundary. It is found that for the constant-flux inland boundary, the shape of the saltwater interface is independent of the geometry of the bottom confining layer for both aquifer types, despite that the geometry of the bottom confining layer determines the location of the interface tip. This is attributed to that the hydraulic head at the interface is identical to that of the coastal boundary, so the shape of the bed below the interface is irrelevant to the interface position. Moreover, developed analytical solutions with an empirical factor on the density factor are in good agreement with the results of variable-density flow numerical modeling. Analytical solutions developed in this study provide a powerful tool for assessment of seawater intrusion in sloping coastal aquifers as well as in coastal aquifers with a known freshwater flux but an arbitrary geometry of the bottom confining layer. |
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THL @ christoph.kuells @ Lu.etal.2016 |
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15 |
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Greene, R.; Timms, W.; Rengasamy, P.; Arshad, M.; Cresswell, R. |
| Title |
Soil and Aquifer Salinization: Toward an Integrated Approach for Salinity Management of Groundwater |
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Book Chapter |
| Year |
2016 |
Publication |
Integrated Groundwater Management: Concepts, Approaches and Challenges |
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377-412 |
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Degradation of the quality of groundwater due to salinization processes is one of the key issues limiting the global dependence on groundwater in aquifers. As the salinization of shallow aquifers is closely related to root-zone salinization, the two must be considered together. This chapter initially describes the physical and chemical processes causing salinization of the root-zone and shallow aquifers, highlighting the dynamics of these processes and how they can be influenced by irrigation and drainage practices, thus illustrating the connectivity between soil and groundwater salinization. The processes leading to aquifer salinization in both inland and coastal areas are discussed. The roles of extractive resource industries, such as mining and coal bed methane operations, in causing aquifer salinization are also outlined. Hydrogeochemical changes occurring during salinization of aquifers are examined with the aid of Piper and Mixing Diagrams. The chapter then illustrates the extent of the problem of groundwater salinization as influenced by management and policy using two case studies. The first is representative of a developing country and explores management of salt-affected soils in the Indus Valley, Pakistan, while the second looks at a developed country, and illustrates how through monitoring we can deduce causes of shallow aquifer salinity in the Namoi Catchment of NSW, Australia. Finally, there is a section on integration and conclusions where we illustrate how management to mitigate salinization needs to be integrated with policy to diminish the threat to productivity that occurs with groundwater degradation. |
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Springer International Publishing |
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Cham |
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Jakeman, A.J.; Barreteau, O.; Hunt, R.J.; Rinaudo, J.-D.; Ross, A. |
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978-3-319-23576-9 |
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THL @ luqianxue.zhang @ Greene2016 |
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49 |
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Seyedmohammadi*, J.; Esmaeelnejad, L.; Shabanpour, M. |
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Spatial variation modeling of groundwater electrical conductivity using geostatistics and GIS |
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Journal Article |
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2016 |
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Model. Earth Syst. Environ. |
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2 |
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169 |
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CUT @ phaedon.kyriakidis @ Seyedmohammadi2016 |
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164 |
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Satrio, S., Prasetio, R., Hadian, M., Syafri, I. |
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Stable Isotopes and Hydrochemistry Approach for Determining the Salinization Pattern of Shallow Groundwater in Alluvium Deposit Semarang, Central Java |
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2016 |
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Indonesian Journal on Geoscience |
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4 |
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THL @ christoph.kuells @ |
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195 |
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