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Record Search Query: ServiceParameters>MODELS>HYDROLOGIC AND TERRESTRIAL WATER CYCLE MODELS

Two-dimensional method-of-characteristics ground-water flow and transport model
Entry ID: USGS_MOC
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Summary
Abstract: The Two-dimensional method-of-characteristics ground-water flow and transport model model simulates solute transport in flowing ground water. It is applicable to one- or two-dimensional problems involving steady- state or transient flow. The model computes changes in concentration over time caused by the processes of advective transport, hydrodynamic dispersion, mixing or dilution from fluid sources, and certain types of chemical reactions (first-order irreversible-rate reaction or equilibrium-controlled sorption- desorption and ion exchange). Gradients of fluid density, viscosity, and temperature are assumed not to affect the velocity distribution. However, the aquifer may be heterogeneous and anisotropic. It is one of the most used models for solute-transport problems. Complete documentation of the current version of this model requires both the report by Konikow and Bredehoeft (1978) and the report by Goode and Konikow (1989).

[Summary provided by the USGS.]

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Description: Download source code and software for the Two-dimensional method-of-characteristics ground-water flow and transport model.

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Service Citation
Originators: Konikow, L.F., Granato, G.E., and Hornberger, G.Z.
Title: Two-dimensional method-of-characteristics ground-water flow and transport model
Release_Date: 1994
Provider: U.S. Geological Survey
URL: http://water.usgs.gov/software/MOC/
Service Provider
Office of Ground Water, Water Resource Division, USGS, U.S. Department of the Interior

Service Provider Personnel
Name: USGS GROUND WATER INFO
Phone: 703-648-5001
Email: ogw_webmaster at usgs.gov
Contact Address:
U. S. Geological Survey
Office of Ground Water
411 National Center
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
Distribution Media
Distribution_Media: Online
Fees: No fees
Personnel
TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA

WATER RESOURCES U.S. GEOLOGICAL SURVEY
Role: TECHNICAL CONTACT
Email: h2osoft at usgs.gov
Contact Address:
U.S.G.S.
Hydrologic Analysis Software Support Program
437 National Center
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
Publications/References
Goode, D.J., and Konikow, L.F., 1989, Modification of a method-of- characteristics solute-transport model to incorporate decay and equilibrium-controlled sorption or ion exchange: U.S. Geological Survey Water-Resources Investigations Report 89-4030, 65 p.

Konikow, L.F., and Bredehoeft, J.D., 1978, Computer model of two- dimensional solute transport and dispersion in ground water: U.S. Geological Survey Techniques of Water-Resources Investigations, book 7, chap. C2, 90 p.
Creation and Review Dates
SERF Creation Date: 2008-05-28
SERF Last Revision Date: 2008-05-29
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