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. The analysis indicates the multirate model is better suited to describing core scale 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. Simulation models for conservative and nonconservative solute. A mathematical model based on conditional probability distributions is proposed for solute yield response to rainfall impulses at the basin scale. 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. To capture the complexity and nonlinearity in processes controlling water. Multiscale modelling of flow and solute transport in the. These physical conditions significantly influence solute transport behavior, as demonstrated by a transient storage model simulation of solute transport in a very small 0. 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.
Basin scale model of solute transport basin scale model of solute transport rinaldo, andrea. The largescale model was calibrated as part of its development to available data throughout the basin. 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. The governing equation underlying the model is the advectiondispersion. 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. The nature of the catchment under study, the transport phenomena investigated i. Geologic model construction basinscale geologic mapping. Two mathematical models that are used to simulate solute transport in streams are. 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.
Basin scale model of solute transport rinaldo 1987 water. The details of the calibration and results are given in michael and voss 2009b. Using the otis solutetransport model to evaluate remediation. Largescale solute transport modeling in discretely.
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. Uncertainty in simulation of nitrate leaching at field and. Maps of the extent and structure of the aquifer were. 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. Storage solutetransport model was used to simulate ambient waterquality conditions and effects of. Corescale solute transport model selection using monte carlo. 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. Modeling subsurface water flow and solute transport with. 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. 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. Pdf modeling groundwater flow and solute transport at azraq. The study uses a benchmark situation published by zimmermann et al. Thus, our current understanding of solute transport at the river network scale is limited. Pdf fluid flow processes at basin scale researchgate.
James 20, corescale solute transport model selection using monte carlo analysis, water resour. The new version, unsatchemgeo, runs in a geographic context in association with the gis, such that data required by. Hydrogeologic setting pinal creek basin is located in the central highlands of arizona in the copper mining district near globe gila county. Effect of enhanced manganese oxidation in the hyporheic. Effect of enhanced manganese oxidation in the hyporheic zone. Personequivalent hydraulic conductivity of an experimental stratigraphy implications for basinscale flow simulations water resources research, 42 2006, p. Freeman j cook, dispersion in solute transport models. Twoscale modeling of solute transport in an experimental stratigraphy. Manual calibration was not considered because the process entails. Runkel abstract otis is a mathematical simulation model used to characterize the fate and transport of waterborne solutes in streams and rivers. 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. Hence, fluid flow models alone have not been very effective in estimating rates of solute transport in sedimentary basins. Twoscale modeling of solute transport in an experimental. 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.
How groundwatersolute fate and transport m d li c a i t i. 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. Constraints the rbmb groundwater flow and solute transport models are. Basin scale model of solute transport, water resources. Many investigators are studying streams and the effect of basin loading on water quality. Aiken, south carolina 29808 a threedimensional finitedifference model was developed to simulate groundwater f7 ow and sol ute.
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. Uncertainty in model structure was not considered, although known to be important and usually considered much larger than the. The study of diffusion dominant solute transport in solid. The analysis indicates the multirate model is better suited to describing corescale solute breakthrough in the culebra dolomite than the other two models.
A dualporosity model for simulating solute transport in. Overview of work zcomprehensive site characterization zsummary of site conditions in rifs zimplementation of rodrequired remedy. Basin simulation models are useful to complement the paleohydrogeologic record. 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. A dualporosity model for simulating solute transport in oil shale by kent c.
The travel time then determines what the concentration will be in. Comparing transient storage modeling and residence time. The data needed to construct a quantitative prediction tool, a solute fate and transport model, can be extracted from the extensive data collected during 1 exploration programs and 2 baseline programs required for a permit to mine. A dualporosity model for simulating solute transport in oil. The integrated conjunctive use model consists of the gis database, surface water model, vadose zone model, and groundwater flow model. 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. In this paper, we compare results of three rwt slug tracer experiments in three geomorphically distinct stream reaches in the lookout creek basin in central oregon, usa. Matric potential with time at white river basin, indiana 8. Environmental protection agency the hydrogeochemistry of the oilshalerich area is described and a digital model is used. 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. Fsa groundwater flow and solute transport model presentation to scottsdale citizens group march 19, 1999.
We simulated stationary and transient model with good results. Interactions between hydrologic processes and chemical reactions may be quanti. 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. 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. Observation and modeling of catchmentscale solute transport.
The 4th section presents an analytical model for diffusion dominant solute transport in a finite domain that can be used to assist in. Applications of gis to the modeling of nonpoint source. Basin scale simulations the emphasis is on basinscale simulations to evaluate the models response on seasonal to decadal time scales eddy activity, mode. 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. Two areas within the basinscale model were targeted for refinement based on flowpaths simulated with modpath pollock, 2012. In this paper, the second of a series, we apply the models discussed in part 1 to a significant case study. As a visualization and analysis tool, gis is capable of manipulating both spatiallyreferenced input and output parameters of the model.
A numerical model has been developed for the largescale simulation of solute transport in discretelyfractured porous media. Figure 1 illustrates the relationship between mathematical model, discrete algebraic model, analytical solution, approximate numerical solution, and. Geological survey professional paper 1196 prepared in cooperation with the u. Modeling solute transport and geochemistry in streams and. The model treats oil shale as a dualporosity medium by simulating. One simple model for scaleup and massbalance esti mates. Comparison of modeling predictions with field data i. Solute transport in streams is governed by a suite of hydrologic and geochemical processes. Experts describe the transport of solutes dissolved in groundwater using four primary process. 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. The model treats oil shale as a dualporosity medium by simulating flow and. The 3rd section presents the solute transport model and analyses for the bruce site.
Effects of scale on interpretation and management of sediment and water quality proceedings of. Solute transport along stream and river networks usda forest. Evaluation of unsaturatedzone solutetransport models for studies of. Conjunctive groundwater and surface water use in southern. Twoscale modeling of solute transport in an experimental stratigraphy twoscale modeling of solute transport in an experimental stratigraphy zhang, ye.
Solutes enter the mass balance because of sorption processes between fixed phases and the carrier flow. The hydraulic conductivity k value in homogeneous simulations was anisotropic, with the. 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. A large number of analytical models for one, two, and threedimensional solute transport problems were recently.
Oilshale mining activities in piceance basin in northwestern colorado could adversely affect the ground and surfacewater quality in the basin. Solute transport models simulate the fate and transport of dissolved constituents in groundwater, which include salts and contaminants. Glover abstract a model is described for simulating threedimensional groundwater flow and solute transport in oil shale and associated hydrogeologic units. After a prime calibration, we observed very good output data according. Title page abstract introduction conclusions references tables figures j i j i back close full screen esc printerfriendly version interactive discussion w a d1. In this study, the conductivity map is rescaled to 100 m long and 8 m thick fig. 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. Basinscale transport of dissolved species in groundwater.
When the initial age of basin fluids at 100 ma was set to zero, we obtained an extreme lower. Solutetransport models simulate the fate and transport of dissolved constituents in groundwater, which include salts and contaminants. Hydrogeochemistry and simulated solute transport, piceance. Corescale solute transport model selection using monte. The transfer function model tpm of field solute transport through unsaturated soils proposed by jury et al. A heterogenous model is created, incorporating the complete. Impacts of physical and chemical aquifer heterogeneity on. Hydrogeochemistry and simulated solute transport, piceance basin, northwestern colorado by stanley g.
Solute transport modelling at the groundwater body scale. Pdf modeling groundwater flow and solute transport at. Evaluation of unsaturatedzone solutetransport models. 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. Groundwater flow and solutetransport modeling springerlink.