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

An Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path
Entry ID: USGS_NETPATH
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Summary
Abstract: NETPATH is an interactive Fortran 77 computer program used to interpret net geochemical mass-balance reactions between an initial and final water along a hydrologic flow path. Alternatively, NETPATH computes the mixing proportions of two to five initial waters and net geochemical reactions that can account for the observed composition of a final water. The program utilizes previously defined chemical and isotopic data for waters from a hydrochemical system. For a set of minerals and (or) gas phases hypothesized to be the reactive phases in the system, NETPATH calculates the mass transfers in every possible combination of the selected phases that accounts for the observed changes in the selected chemical and (or) isotopic compositions observed along the flow path. The calculations are of use in interpreting geochemical reactions, mixing proportions, evaporation and (or) dilution of waters, and mineral mass transfer in the chemical and isotopic evolution of natural and environmental waters. Rayleigh distillation calculations are applied to each mass-balance model that satisfies the constraints to predict carbon, sulfur, nitrogen, and strontium isotopic compositions at the end point, including radiocarbon dating. DB is an interactive Fortran 77 computer program used to enter analytical data into NETPATH, and calculate the distribution of species in aqueous solution. This report describes the types of problems that can be solved, the methods used to solve problems, and the features available in the program to facilitate these solutions. Examples are presented to demonstrate most of the applications and features of NETPATH. The codes DB and NETPATH can be executed in the UNIX or DOS environment.

[Summary provided by the USGS.]

Related URL
Link: GET SERVICE > GET SOFTWARE PACKAGE
Link: GET SERVICE > GET SOFTWARE PACKAGE
Link: GET SERVICE > GET SOFTWARE PACKAGE
Description: Access the Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path.

Link: VIEW RELATED INFORMATION > USER'S GUIDE
Description: User guide for the Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path.
Service Citation
Originators: L.N. Plummer, E.C. Prestemon, and D.L. Parkhurst
Title: An Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path
Release_Date: 1994
Provider: U.S. Geological Survey
Edition: 2.0
URL: http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/netpath/
ISO Topic Category
INLAND WATERS
Service Provider
Office of Surface Water, Water Resource Division, USGS, U.S. Department of the Interior

Service Provider Personnel
Name: WATER RESOURCES U.S. GEOLOGICAL SURVEY
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
Distribution Media
Distribution_Media: Online
Fees: No fees
Personnel
DAVID L.. PARKHURST
Role: TECHNICAL CONTACT
Phone: 303-236-5098
Email: dlpark at usgs.gov
Contact Address:
U.S. Geological Survey
P.O. Box 25046, ms413
City: Lakewood
Province or State: CO
Postal Code: 80225
Country: USA

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
Creation and Review Dates
SERF Creation Date: 2008-05-20
SERF Last Revision Date: 2015-01-28
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