Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"MT3D"”.
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Development of a model for simulation of solute transport in a stream aquifer system
… 3.7, the aquifer solute transport model, MT3D 1.11, and a fourth model developed in this study referred to as Stream Solute Transport Model or SSTM 1.0. The flow interaction in a stream-aquifer system is simulated by the MSAST using MODFLOW and MODBRANCH. The solute interaction in a …
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In the Zone: the Effects of Soil Pipes and Dunes on Hyporheic and Riparian Zone Hydraulics and Biogeochemistry
… This research first employed MODFLOW and MT3D-USGS to model transient hyporheic hydraulics and nitrate transport in a length of riparian/riverbank soil to probe the effects of soil pipes on hydraulics and denitrification due to peak flow events in the channel. Findings showed that …
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Untersuchung und Modellierung von Wasserhaushalt und Stofftransportprozessen in grundwassergeprägten Landschaften am Beispiel der Unteren Havel
… Grundwassermodell gekoppelte Stofftransportmodel MT3D. Zur modellbasierten Simulation des Wasserhaushalts der Tieflandauenlandschaften wurde das Modellkonzept IWAN für verschieden skalige Teileinzugsgebiete an der Havel für Simulationszeiträume von 2 Wochen bis zu 13 Jahren angewandt. Dabei wurden …
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Hydrogeologic Model of a Leachate Plume in an Unconfined Coastal Plain Aquifer and Chemical Transport Mechanisms of Metals and Dense Non-Aqueous Phase Liquids
… A three-dimensional mathematical model (MODFLOW/MT3D) was used to simulate the regional groundwater flow and contaminant transport at the site. This model was then used to investigate the migration of chlorinated hydrocarbons (CHCs) and metals in unconfmed high porosity sandstone, indicating that …
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Modeling effective isotopic fractionation in groundwater aquifers with heterogeneous reaction rates
… flow and reactive transport codes MODFLOW and MT3D were used to construct a set of simple 2-dimensional simulations, with reaction occurring only in certain restricted domains. The results indicate strongly decreased effective isotopic fractionation relative to the homogeneous case, and show …
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Development of an analytical groundwater contaminant transport model
… from two complex numerical models (MODFLOW/MT3D). Calibration of the aquifer model to field data showed excellent results with a correlation coefficient of 0.66. The numerical models in contrast returned correlation coefficients below 0.1 when compared to field data. Calibrated parameter …
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Implementing a treated wastewater recharge technique and reverse osmosis unit system for water sustainability
… the utilization of the Visual MODFLOW and MT3D simulation model approach. To test the sensitivity and the durability of the conceptual design system, the lump model simulation approach was simulated for different ranges of hydrologic, hydrogeologic, and climatic parameters to determine the …
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A comprehensive modeling approach for BMP impact assessment considering surface and ground water interaction
… existing ground water models such as MODFLOW and MT3D. The linked approach performed better in predicting the seasonal trend of total runoff compared to the integrated approach by showing an increase in monthly Nash-Sutcliffe efficiency value from 0.53 to 0.60. Surface and subsurface output …