flow modeling Articles
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Optimal solute transport in heterogeneous aquifer: coupled inverse modelling
Characterisation of transmissivity heterogeneity is critical for groundwater flow and solute transport. The heterogeneity of transmissivity is studied through variogram-based techniques. Conventionally, the parameters in variogram are obtained by fitting measurements to a theoretical variogram. However, conditioning to the sampled geological variables neglects the effects of observed ...
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Integration of Subsurface Data Management and GIS to Facilitate Model Calibration
Abstract The development of numerical codes, as well as pre- and post-processors to support these codes, has made the discipline of groundwater modelling increasingly more automated and efficient. The value of such modelling is reliant on the site-specific data used to build and calibrate the models. The integration of EarthSoft's EQuISÒ Geology and any of several popular modelling environments ...
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Benefits of Magnetic Resonance (NMR) compared to Electrical Resistivity in Brackish and Saline Groundwater Investigations
Geophysical NMR measurements deliver reliable and straightforward hydrogeologic information, even in saline groundwater environments. These environments can be challenging to characterize with conventional electrical resistivity measurements, because differences in resistivity may be associated with the fluid or with the formation. Low resistivity could be correlated with a impermeable clay, or ...
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Combined interpretation of radar, hydraulic, and tracer data from a fractured-rock aquifer near Mirror Lake, New Hampshire, USA
An integrated interpretation of field experimental cross-hole radar, tracer, and hydraulic data demonstrates the value of combining time-lapse geophysical monitoring with conventional hydrologic measurements for improved characterization of a fractured-rock aquifer. Time-lapse difference-attenuation radar tomography was conducted during saline tracer experiments at the US Geological Survey ...
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The hidden benefits of maturity modelling
Most 1–D modelling studies are carried out with the explicit objective of calculating maturity and hydrocarbon generation. This focus on bottom–line output has caused most modellers to overlook a major additional value of such studies: the knowledge acquired while building internally consistent geologic models. During model construction one should carefully consider the following factors: events ...
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