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Linde*, N.; Renard, P.; Mukerji, T.; Caers, J. |
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Title |
Geological realism in hydrogeological and geophysical inverse modeling: A review |
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2015 |
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Adv. Water Resour. |
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86 |
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86-101 |
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CUT @ phaedon.kyriakidis @ Linde2015 |
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151 |
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Author |
Thakur, J.K. |
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Title |
Optimizing groundwater monitoring networks using integrated statistical and geostatistical approaches |
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2015 |
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J. Hydrol. |
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2 |
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148-175 |
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2306-5338 |
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CUT @ phaedon.kyriakidis @ Thakur2015 |
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163 |
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Kloppmann, W.; Petelet-Giraud, E.; Guerrot, C.; Cary, L.; Pauwels, H. |
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Title |
Extreme Boron Isotope Ratios in Groundwater |
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2015 |
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Procedia Earth and Planetary Science |
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13 |
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Kloppmann, W. , Petelet-Giraud, E. , Guerrot, C. , Cary, L. , & Pauwels, H. (2015). Extreme Boron Isotope Ratios in Groundwater. Procedia Earth and Planetary Science, 13 . doi: 10.1016/j.proeps.2015.07.069 |
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THL @ christoph.kuells @ |
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193 |
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Lu, C.; Xin, P.; Kong, J.; Li, L.; Luo, J. |
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Analytical solutions of seawater intrusion in sloping confined and unconfined coastal aquifers |
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2016 |
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Water Resources Research |
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52 |
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6989-7004 |
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seawater intrusion, sloping coastal aquifer, analytical solution |
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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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Author |
Llopis-Albert, C.; Merigó, J.M.; Xu, Y. |
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Title |
A coupled stochastic inverse/sharp interface seawater intrusion approach for coastal aquifers under groundwater parameter uncertainty |
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2016 |
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Journal of Hydrology |
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540 |
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774-783 |
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This paper presents an alternative approach to deal with seawater intrusion problems, that overcomes some of the limitations of previous works, by coupling the well-known SWI2 package for MODFLOW with a stochastic inverse model named GC method. On the one hand, the SWI2 allows a vertically integrated variable-density groundwater flow and seawater intrusion in coastal multi-aquifer systems, and a reduction in number of required model cells and the elimination of the need to solve the advective-dispersive transport equation, which leads to substantial model run-time savings. On the other hand, the GC method allows dealing with groundwater parameter uncertainty by constraining stochastic simulations to flow and mass transport data (i.e., hydraulic conductivity, freshwater heads, saltwater concentrations and travel times) and also to secondary information obtained from expert judgment or geophysical surveys, thus reducing uncertainty and increasing reliability in meeting the environmental standards. The methodology has been successfully applied to a transient movement of the freshwater-seawater interface in response to changing freshwater inflow in a two-aquifer coastal aquifer system, where an uncertainty assessment has been carried out by means of Monte Carlo simulation techniques. The approach also allows partially overcoming the neglected diffusion and dispersion processes after the conditioning process since the uncertainty is reduced and results are closer to available data. |
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0022-1694 |
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THL @ christoph.kuells @ Llopis-Albert2016 |
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30 |
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