NAMEanalgwst - A set of programs that calculate analytical solutions for one-, two-, and three-dimensional solute transport in ground-water systems with uniform flow The individual programs are: finite(1) - One-dimensional solute transport in a finite system seminf(1) - One-dimensional solute transport in a semi-infinite system point2(1) - Two-dimensional solute transport in an infinite system with a continuous point source stripf(1) - Two-dimensional solute transport in a finite-width system with a finite-width solute source stripi(1) - Two-dimensional solute transport in an infinite-width system with a finite-width solute source gauss(1) - Two-dimensional solute transport in an infinite-width system with solute source having a gaussian concentration distribution point3(1) - Three-dimensional solute transport in an infinite system with a continuous point source point3_mod(1) - Point3 program modified to reproduce result as described in Wexler (1992a), page 49. patchf(1) - Three-dimensional solute transport in a finite-width and finite-height system with a finite-width and finite- height source patchi(1) - Three-dimensional solute transport in an infinite-width and infinite-height system with a finite-width and finite-height sourceABSTRACTAnalytical solutions to the advective-dispersive solute-transport equation are useful in predicting the fate of solutes in ground water. Computer programs that compute the analytical solutions compiled from available literature or derived by E.J. Wexler are provided for a variety of systems and boundary conditions.HISTORYVersion 1.1 1996/04/03 - All programs have been restructured to a consistent coding format and style.DATA REQUIREMENTSEach program requires data on advective velocity, dispersion coefficient, spatial information, temporal information, and boundary concentrations. Optional data may include a first-order solute- decay coefficient.OUTPUT OPTIONSOutput is the calculated concentrations at specified points in time and space. A plotting option exists to view the output as graphs.SYSTEM REQUIREMENTSThe computer programs are written in Fortran 77 with the following extensions: use of include files and reference to compiler-dependent system date and time routines. The computer programs were originally written for a Prime minicomputer but all programs should run on IBM- compatible personal computers with minor modifications as described in Wexler (1992a). The plot routines are written with Computer Associates' DISSPLA library references. Generally, the programs are easily installed on most computer systems that have access to the DISSPLA graphics library. Alternatively, graphics can be disabled and data can be easily extracted from the program output and plotted using graphic presentation programs. The programs have been used on UNIX-based computers.DOCUMENTATIONWexler, E.J., 1992a, Analytical solutions for one-, two-, and three- dimensional solute transport in ground-water systems with uniform flow: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. B7, 190 p. Wexler, E.J., 1992b, Analytical solutions for one-, two-, and three- dimensional solute transport in ground-water systems with uniform flow -- Supplemental Report: Source codes for computer programs and sample data sets: U.S. Geological Survey Open-File Report 92-78, 3 p., 1 computer diskette.TRAININGSome of the programs are introduced in the class Ground-Water Solute-Transport Concepts for Field Investigations (GW2005TC), offered annually at the USGS National Training Center.CONTACTSOperation: U.S. Geological Survey Office of Ground Water Thomas E. Reilly 411 National Center Reston, VA 20192 tereilly@usgs.gov Distribution: U.S. Geological Survey Hydrologic Analysis Software Support Program 437 National Center Reston, VA 20192 h2osoft@usgs.gov Official versions of U.S. Geological Survey water-resources analysis software are available for electronic retrieval via the World Wide Web (WWW) at: http://water.usgs.gov/software/ and via anonymous File Transfer Protocol (FTP) from: water.usgs.gov (path: /pub/software). The WWW page and anonymous FTP directory from which the ANALGWST software can be retrieved are, respectively: http://water.usgs.gov/software/analgwst.html --and-- /pub/software/ground_water/analgwst

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