Results 241 to 250 of about 15,737 (297)
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Modeling Multiaquifer Wells with MODFLOW
Groundwater, 2004Multiaquifer wells, i.e., wells that are open across more than one aquifer, can have a profound effect on the hydraulics of a ground water system. These wells change the physical system by establishing direct hydraulic links between otherwise isolated strata.
Matthew J. Tonkin +1 more
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SEEPAGE, a New MODFLOW DRAIN Package
Groundwater, 2004AbstractThe prediction of the location of ground water discharge areas is a key aspect for the protection and (re)development of ground water‐dependent wetlands. Ground water discharge areas can be simulated with MODFLOW using the DRAIN package by setting the drain level equal to the topography, while the conductance is mostly set to an arbitrary high ...
Batelaan, Okke, De Smedt, Florimond
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A Python Script to Compute Isochrones for MODFLOW
Groundwater, 2017AbstractMODFLOW constitutes today the most popular modeling tool in the study of water flow in aquifers and in modeling aquifers. To simplify the interface to MODFLOW various GUI have been developed for the creation of model definition files and for the visualization and interpretation of results. Recently Bakker et al.
FEO, Alessandra +3 more
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Axisymmetric Modeling Using MODFLOW‐USG
Groundwater, 2019AbstractAxisymmetric groundwater models are used for simulating radially symmetric conditions. Groundwater simulators built specifically to model axisymmetric conditions are most commonly used for simulating aquifer tests. Although some numerical models capable of simulating flow and solute transport that are developed in the cartesian coordinate ...
Vivek Bedekar +2 more
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Geoscientific Model Development
. We discuss the various performance aspects of parallelizing our transient global-scale groundwater model at 30′′ resolution (30 arcsec; ∼ 1 km at the Equator) on large distributed memory parallel clusters.
J. Verkaik +4 more
semanticscholar +1 more source
. We discuss the various performance aspects of parallelizing our transient global-scale groundwater model at 30′′ resolution (30 arcsec; ∼ 1 km at the Equator) on large distributed memory parallel clusters.
J. Verkaik +4 more
semanticscholar +1 more source
MODFLOW data extractor program
Open-File Report, 2005Abstract : EXTRACTOR is a program that extracts data from formatted and labeled MODFLOW head or drawdown files or from MODFLOW-GWT concentration or velocity files. The user specifies the number of rows, columns, and layers in the target data file, the desired time step or move number, and the range of rows, columns, and layers for which data should be ...
Brendan A. Zinn, Leonard F. Konikow
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Improved Calculations for Dewatered Cells in MODFLOW [PDF]
Groundwater, 2001 AbstractUse of the United States Geological Survey ground water flow model MODFLOW is often hampered by the occurrence of “dry cells.” While MODFLOW allows such cells to “rewet” in the course of a simulation, stability of the heads solution process is often problematical with rewetting functionality operative.
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Improved water table dynamics in MODFLOW
Groundwater, 2005AbstractThe standard formulation of a block‐centered finite‐difference model, such as MODFLOW, uses the center of the cell as the location of a cell node. Simulations of a dynamic water table can be improved if the node of a cell containing the water table is located at the water table rather than at the center of the cell.
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MODFLOW-2005 : the U.S. Geological Survey modular ground-water model--the ground-water flow process
, 2005............................................................................................................................................1 ...
A. W. Harbaugh
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Implementing Spatially Variable Anisotropy in MODFLOW
Groundwater, 1997AbstractThe U.S. Geological Survey modular ground‐water flow model (MODFLOW) allows column to row anisotropy to vary only in different layers. Modifications to the code were made to allow each grid block in the model to have its own anisotropy, and still retain backward compatibility with the original formulation.
Gregory J. Ruskauff, Michael P. Kladias
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