| Records |
| Author |
Greene, R.; Timms, W.; Rengasamy, P.; Arshad, M.; Cresswell, R. |
Title  |
Soil and Aquifer Salinization: Toward an Integrated Approach for Salinity Management of Groundwater |
Type |
Book Chapter |
| Year |
2016 |
Publication |
Integrated Groundwater Management: Concepts, Approaches and Challenges |
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Issue |
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Pages |
377-412 |
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| Abstract |
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 |
Place of Publication |
Cham |
Editor |
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 |
Serial |
49 |
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| Author |
Esfahani, H.K.; Datta, B. |
| Title |
Simulation of reactive geochemical transportprocesses in contaminated aquifers using surrogate models |
Type |
Journal Article |
| Year |
2015 |
Publication |
Int. J. of GEOMATE |
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8 |
Issue |
1 |
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1190-1196 |
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CUT @ phaedon.kyriakidis @ esfahani2015 |
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113 |
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| Author |
Bailey, R.T. |
| Title |
Selenium contamination, fate, and reactive transport in groundwater in relation to human health |
Type |
Journal Article |
| Year |
2017 |
Publication |
Hydrogeology Journal |
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25 |
Issue |
4 |
Pages |
1191-1217 |
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Springer |
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THL @ luqianxue.zhang @ bailey2017selenium |
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77 |
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| Author |
Conde, J.E.; Sanz Alaejos, M. |
| Title |
Selenium concentrations in natural and environmental waters |
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Journal Article |
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1997 |
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Chemical Reviews |
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97 |
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6 |
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1979-2004 |
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ACS Publications |
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THL @ luqianxue.zhang @ conde1997selenium |
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98 |
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Sebben, M.L.; Werner, A.D.; Graf, T. |
| Title |
Seawater intrusion in fractured coastal aquifers: A preliminary numerical investigation using a fractured Henry problem |
Type |
Journal Article |
| Year |
2015 |
Publication |
Advances in Water Resources |
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85 |
Issue |
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Pages |
93-108 |
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Despite that fractured coastal aquifers are widespread, the influence of fracture characteristics on seawater intrusion (SWI) has not been explored in previous studies. This research uses numerical modelling in a first step towards understanding the influence of fracture orientation, location and density on the extent of seawater and accompanying patterns of groundwater discharge in an idealised coastal aquifer. Specifically, aquifers containing single fractures or networks of regularly spaced fractures are studied using modified forms of the Henry SWI benchmark problem. The applicability of equivalent porous media (EPM) models for representing simple fracture networks in steady-state simulations of SWI is tested. The results indicate that the influence of fractures on SWI is likely to be mixed, ranging from enhancement to reduction in seawater extent and the width of the mixing zone. For the conceptual models considered here, vertical fractures in contact with the seawater wedge increase the width of the mixing zone, whereas vertical fractures inland of the wedge have minimal impact on the seawater distribution. Horizontal fractures in the lower part of the aquifer force the wedge seaward, whereas horizontal fractures located within the zone of freshwater discharge enhance the wedge. Inclined fractures roughly parallel to the seawater-freshwater interface increase the landward extent of seawater and fractures perpendicular to the interface inhibit the wedge. The results show that EPM models are likely inadequate for inferring salinity distributions in most of the fractured cases, although the EPM approach may be suitable for orthogonal fracture networks if fracture density is high and appropriate dispersivity values can be determined. |
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0309-1708 |
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no |
| Call Number |
THL @ christoph.kuells @ Sebben2015 |
Serial |
37 |
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