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20 Titles Match Your Query
Showing 1 through 20 of 20
1. TETRANS Model: Estimates one-dimensional Solute Transport Through the Vadose Zone Under Transient-state Conditions [USDA_ARS_TETRANS]
TETrans (an acronym for Trace Element Transport) is a functional, layer-equilibrium model of one-dimensional solute transport through the vadose zone under transient-state conditions. This type of ...

2. UNSATCHEM - Software Package for Simulating Water, Heat, Carbon Dioxide and Solute Movement in One-Dimensional Variably Saturated Media [USDA_ARS_UNSATCHEM]
UNSATCHEM is a software package for simulating water, heat, carbon dioxide and solute movement in one-dimensional variably saturated media. The software consists of the UNSCHEM (version 2.0) computer ...

3. Rosetta Pedotransfer Function Model [01-rosetta-99]
The Rosetta program is used to estimate unsaturated hydraulic properties from surrogate soil data such as soil texture data and bulk density. Models of this type are called pedotransfer functions ...

4. SWMS-2D Model: Simulates Water and Solute Movement in Two-dimensional Variably Saturated Media [USDA_ARS_SWMS-2D]
SWMS_2D is a computer program for simulating water and solute movement in two-dimensional variably saturated media. The program numerically solves the Richards' equation for saturated-unsaturated ...

5. UNSATCHEM-2D Model: Element Code for Modeling Major Ion Equilibrium and Kinetic Non-Equilibrium Chemistry [USDA_ARS_UNSATCHEM-2D]
UNSATCHEM-2D is a two-dimensional finite element code for modeling major ion equilibrium and kinetic non-equilibrium chemistry in variably saturated porous media. The model is intended for prediction ...

6. UNSODA Model: Database and Program for Indirect Methods of Estimating Unsaturated Hydraulic Properties [USDA_ARS_UNSODA]
UNSODA is a database of unsaturated soil hydraulic properties -Water retention -Hydraulic conductivity and soil water diffusivity -Basic soil properties (particle-size distribution, bulk density, ...

7. WATSUIT Model: Predicts the Salinity, Sodicity, and Toxic-Solute Concentration [USDA_ARS_WATSUIT]
WASUIT is a computer program which predicts the salinity, sodicity, and the toxic-solute concentration of the soil-water within a simulated crop root zone resulting from the use of a particular ...

8. 3DADE Model: Evaluates analytical solutions for two- and three-dimensional equilibrium solute transport [USDA_ARS_3DADE]
3DADE is a Fortran computer program for evaluating a series of analytical solutions of the 3-Dimensional Advection-Dispersion Equation. The analytical solutions pertain to three-dimensional solute ...

9. CFITM Model: Estimates CDE solute transport parameters (v, D) from analysis of column breakthrough data [USDA_ARS_CFITM]
Predictions of solute transport in the field are generally based upon convective-dispersive type transport equations. The one-dimensional form of this equation contains two parameters which must be ...

10. CHAIN Model: Evaluates analytical solutions for convective-dispersive transport of solutes subject to consecutive decay chain reactions (up to 4 solutes) [USDA_ARS_CHAIN]
Problems of solute transport involving sequential first-order decay reactions frequently occur in soil systems. Examples are the migration of radionuclides, in which the chain members form a first-order ...

11. CXTFIT Model: Estimates parameters in several equilibrium and non-equilibrium transport models from laboratory or field tracer experiments [USDA_ARS_CXTFIT]
Successful predictions of the fate and transport of solutes in the subsurface hinges on the availability of accurate transport parameters. We modified and updated the CXTFIT (version 1.0) code of ...

12. DISC Model: Computer software for analyzing tension disc infiltrometer data by parameter estimation [USDA_ARS_DISC]
DISC is a computer software package for analyzing Tension Disc Infiltrometer data by parameter estimation. The software package consists of the simplified HYDRUS2 computer program, and an interactive ...

13. ESAP Model: Statistical software package for estimating field scale spatial salinity patterns from electromagnetic induction signal data [USDA_ARS_ESAP]
Each program in this ESAP software suite contains a number of features designed to help perform the various components of the soil salinity assessment process, described below: 1. ESAP-RSSD (Response ...

14. GEOPACK Model: Geostatistical software package for analyzing spatially correlated data [USDA_ARS_GEOPACK]
Geopack is a comprehensive, user-friendly software package containing several computer programs for carrying out geostatistical analyses of spatially correlated data. The programs were written so ...

15. N3DADE Model: Nonequilibrium 3-Dimensional Advection-Dispersion Equation [USDA_ARS_N3DADE]
This research report documents the Fortran program N3DADE (Nonequilibrium 3-Dimensional Advection-Dispersion Equation) which may be used to evaluate analytical solutions described by Leij et al. [1993]. ...

16. RETC Model: Analyzes the hydraulic properties of unsaturated soils [USDA_ARS_RETC]
RETC is a computer program which may be used to analyze the soil water retention and hydraulic conductivity functions of unsaturated soils. These hydraulic properties are key parameters in any quantitative ...

17. SALT Model: Analyzes crop salt tolerance response data [USDA_ARS_SALT]
The SALT computer program may be used to analyze experimentally derived crop salt tolerance response data. The program uses a non-linear least squares inversion method to find the unknown parameters ...

18. SOILCO2 Model: A predictive simulation model based on process oriented relationships [USDA_ARS_SOILCO2]
In this report we present a predictive simulation model, SOILCO2, based on process oriented relationships. The model includes one-dimensional water flow and multiphase transport of CO2 utilizing the ...

19. STANMOD Model (STudio of ANalytical MODels) [USDA_ARS_STANMOD]
STANMOD (STudio of ANalytical MODels) is a Windows based computer software package for evaluating solute transport in porous media using analytical solutions of the convection-dispersion solute transport ...

20. The Hydrus Water Flow, Heat Movement, and Solute Transport Simulation Program [HYDRUS-99]
HYDRUS is a computer program designed to simulate one-dimensional water flow, single-species solute transport, and heat movement, in variably-saturated porous media. The program uses Galerkin finite ...

Showing 1 through 20 of 20
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