The transfer function model tpm of field solute transport through unsaturated soils proposed by jury et al. The new version, unsatchemgeo, runs in a geographic context in association with the gis, such that data required by. Uncertainty in model structure was not considered, although known to be important and usually considered much larger than the. Geologic model construction basinscale geologic mapping. A comprehensive, userfriendly basinscale hydrogeologic database for the tule river basin, including the input and output data relevant to the model, is developed using a geographic information system gis. Introduction 2 the hydrochemical response of a river basin embeds spatial and temporal heterogeneities of runoff formation processes and transport dynamics, hence providing precious information across scales. Solutes enter the mass balance because of sorption processes between fixed phases and the carrier flow. Using the otis solutetransport model to evaluate remediation. Figure 1 illustrates the relationship between mathematical model, discrete algebraic model, analytical solution, approximate numerical solution, and. Modeling subsurface water flow and solute transport with. On the bases of the homogeneous model results, a more vulnerable area was chosen, where simulated flowpaths were relatively vertical, originated within the highas zone, and had a median travel time of less than y range. Develop an understanding of the effect of localscale heterogeneities on flow and solute transport at the basin scale develop an understanding of the effect of heat distributions on solute transport develop efficient modelling approaches to handle coupled heat and solute transport at. The 3rd section presents the solute transport model and analyses for the bruce site. Simulation models for conservative and nonconservative solute.
A numerical model has been developed for the largescale simulation of solute transport in discretelyfractured porous media. Uncertainty in simulation of nitrate leaching at field and. Applications article pdf available in hydrology and earth system sciences 101 august 2005 with 49 reads. Overview of work zcomprehensive site characterization zsummary of site conditions in rifs zimplementation of rodrequired remedy. Aiken, south carolina 29808 a threedimensional finitedifference model was developed to simulate groundwater f7 ow and sol ute. Unsatchem is a finiteelement model of water flow in the vadose zone coupled with multicomponent solute transport, production and transport of co 2, and heat in addition to a major ion model of chemical speciation and kinetics. Effects of scale on interpretation and management of sediment and water quality proceedings of. Maps of the extent and structure of the aquifer were. Pdf azraq basin, being one of the largest basins in jordan and a viable drinking water resource, witnessed a dramatic increase in water demand over.
Title page abstract introduction conclusions references tables figures j i j i back close full screen esc printerfriendly version interactive discussion w a d1. The physicallybased coupled hydrologic model is used in this study to examine the hydrologic and solute n, p budget for the meilin watershed, east china with an area of 0. This study of the hydrology and geochemistry of the area used groundwater solutetransportmodeling techniques to investigate the possible impact of the mines on water quality. A heterogenous model is created, incorporating the complete. Interactions between hydrologic processes and chemical reactions may be quanti. Runkel abstract otis is a mathematical simulation model used to characterize the fate and transport of waterborne solutes in streams and rivers. Oilshale mining activities in piceance basin in northwestern colorado could adversely affect the ground and surfacewater quality in the basin. Hydrogeologic setting pinal creek basin is located in the central highlands of arizona in the copper mining district near globe gila county. Basin scale model of solute transport, water resources. Comparing transient storage modeling and residence time. Effect of enhanced manganese oxidation in the hyporheic. Pdf modeling groundwater flow and solute transport at azraq. Hydrogeochemistry and simulated solute transport, piceance basin, northwestern colorado by stanley g. Two mathematical models that are used to simulate solute transport in streams are.
Fsa groundwater flow and solute transport model presentation to scottsdale citizens group march 19, 1999. Whether the fluids in the basin are currently that old depends on the extent of solute transport in the basin prior to the onset of foreland development, that is, the initial conditions for the model. Multiscale modelling of flow and solute transport in the. Twoscale modeling of solute transport in an experimental stratigraphy. In this study, the conductivity map is rescaled to 100 m long and 8 m thick fig. A dualporosity model for simulating solute transport in oil.
Comparison of modeling predictions with field data i. Basin scale simulations the emphasis is on basinscale simulations to evaluate the models response on seasonal to decadal time scales eddy activity, mode. Thus, our current understanding of solute transport at the river network scale is limited. Basin scale model of solute transport basin scale model of solute transport rinaldo, andrea. Basinscale transport of dissolved species in groundwater.
Impacts of physical and chemical aquifer heterogeneity on. The details of the calibration and results are given in michael and voss 2009b. Corescale solute transport model selection using monte carlo. Applications of gis to the modeling of nonpoint source. Effect of enhanced manganese oxidation in the hyporheic zone. This study of the hydrology and geochemistry of the area used groundwater solute transport modeling techniques to investigate the possible impact of the mines on water quality. When the initial age of basin fluids at 100 ma was set to zero, we obtained an extreme lower. James 20, core scale solute transport model selection using monte carlo analysis, water resour. A solute transport model for streams and rivers by robert l. Storage solutetransport model was used to simulate ambient waterquality conditions and effects of.
This model tracks a solute over an area of 16 square km during days in a prescribed ground water flow accounting for longitudinal and transversal dispersivity. Twoscale modeling of solute transport in an experimental. A mathematical model based on conditional probability distributions is proposed for solute yield response to rainfall impulses at the basin scale. According to the modelling results, upward nitrate trends observed in the basin will not be reversed for 2015 as prescribed by the eu water framework. One simple model for scaleup and massbalance esti mates. Groundwater flow models simulate the hydraulic behavior of the aquifer such as the flow of water, changes in volume of water in storage, and changes in aquifer water levels or heads pressure. Groundwater flow and solutetransport modeling springerlink. Constraints the rbmb groundwater flow and solute transport models are.
The emphasis in the report is on bringing together various aspects of solute transport theory in a manner that is particularly suited to the unusual groundwater flow and solute transport characteristics of oilshale systems. Personequivalent hydraulic conductivity of an experimental stratigraphy implications for basinscale flow simulations water resources research, 42 2006, p. Basin scale model of solute transport rinaldo 1987 water. To capture the complexity and nonlinearity in processes controlling water. One approach couples a regression model of salinity development to a gis of soil salinization factors to model the accumulation of soil salinity in the root zone top 60 cm under steadystate conditions corwin et al. Experts describe the transport of solutes dissolved in groundwater using four primary process. Largescale solute transport modeling in discretely. The study of diffusion dominant solute transport in solid. These physical conditions significantly influence solute transport behavior, as demonstrated by a transient storage model simulation of solute transport in a very small 0. The nature of the catchment under study, the transport phenomena investigated i. Basin scale simulations the emphasis is on basin scale simulations to evaluate the model s response on seasonal to decadal time scales eddy activity, mode water formation, etc. Evaluation of unsaturatedzone solutetransport models. Corescale solute transport model selection using monte.
Pdf fluid flow processes at basin scale researchgate. The governing equation underlying the model is the advectiondispersion. James 20, corescale solute transport model selection using monte carlo analysis, water resour. How groundwatersolute fate and transport m d li c a i t i. The 4th section presents an analytical model for diffusion dominant solute transport in a finite domain that can be used to assist in the discretization of numerical models. Solute transport models simulate the fate and transport of dissolved constituents in groundwater, which include salts and contaminants. In this chapter, we focus on the processes that control solute transport in rivers and explore how those controls change from headwaters to higherorder streams.
Twoscale modeling of solute transport in an experimental stratigraphy twoscale modeling of solute transport in an experimental stratigraphy zhang, ye. The largescale model was calibrated as part of its development to available data throughout the basin. Agencies using the model raymond basin management board use the model to develop the conjunctive use management plan and to evaluate the groundwater level and water quality impacts from the proposed stormwater capture program. This groundwater flow and solute transport model was used to forecast the evolution of nitrate concentrations in groundwater under a realistic scenario of nitrate input for the period 20082058. A dualporosity model for simulating solute transport in oil shale by kent c. The study uses a benchmark situation published by zimmermann et al. The analysis indicates the multirate model is better suited to describing corescale solute breakthrough in the culebra dolomite than the other two models. Contaminant transport model results indicated that the concentration of total dissolved solids is expected to increase slowly in the basin due to the movement of highsalinity water toward the. Manual calibration was not considered because the process entails. A dualporosity model for simulating solute transport in. In this context, the objective of this research was to develop a pragmatic tool to assess and to model groundwater flow and solute transport at the regional scale. As a visualization and analysis tool, gis is capable of manipulating both spatiallyreferenced input and output parameters of the model. Hydrogeochemistry and simulated solute transport, piceance. Solute transport along stream and river networks usda forest.
Some of the more popular one and multidimensional analytical transport models have been cxtfit parker and van genuchten, 1984, at123d yeh, 1981, and 3dade leij and bradford, 1994. The analysis indicates the multirate model is better suited to describing core scale solute breakthrough in the culebra dolomite than the other two models. Many investigators are studying streams and the effect of basin loading on water quality. Freeman j cook, dispersion in solute transport models. The travel time then determines what the concentration will be in. Solute transport modelling at the groundwater body scale. The model treats oil shale as a dualporosity medium by simulating.
The model treats oil shale as a dualporosity medium by simulating flow and. Matric potential with time at white river basin, indiana 8. In this paper, the second of a series, we apply the models discussed in part 1 to a significant case study. The integrated conjunctive use model consists of the gis database, surface water model, vadose zone model, and groundwater flow model. We simulated stationary and transient model with good results. Solutetransport models simulate the fate and transport of dissolved constituents in groundwater, which include salts and contaminants. Jan 15, 2008 two scale modeling of solute transport in an experimental stratigraphy two scale modeling of solute transport in an experimental stratigraphy zhang, ye. Basin simulation models are useful to complement the paleohydrogeologic record. Environmental protection agency the hydrogeochemistry of the oilshalerich area is described and a digital model is used. Geological survey professional paper 1196 prepared in cooperation with the u. The hydraulic conductivity k value in homogeneous simulations was anisotropic, with the.
A large number of analytical models for one, two, and threedimensional solute transport problems were recently. Develop an understanding of the effect of local scale heterogeneities on flow and solute transport at the basin scale develop an understanding of the effect of heat distributions on solute transport develop efficient modelling approaches to handle coupled heat and solute transport at the basin scale. Evaluation of unsaturatedzone solutetransport models for studies of. Observation and modeling of catchmentscale solute transport.116 46 852 1357 1114 426 709 1634 291 1515 1425 423 41 874 1100 56 422 359 300 1190 1647 548 1032 713 1086 833 596 185 614 588 1397 857 925 326 264 241 1242 1239 912 1328