AT123D - model for long-term pollutant fate and migration in groundwater - advection, dispersion, adsorption and decay

AT123D Categories: exposure assessment, flow models - saturated zone, heat transport, solute transport models - saturated zone

AT123D Overview

AT123D, analytical, transient One-, Two-, and Three-Dimensional Model, is an analytical groundwater transport model. AT123D computes the spatial-temporal concentration distribution of wastes in the aquifer system and predicts the transient spread of a contaminant plume through a groundwater aquifer. The fate and transport processes accounted for in AT123D are advection, dispersion, adsorption, and decay. AT123D estimates all the above components on a monthly basis for up to 99 years of simulation time. AT123D can be used as an assessment tool to help the user estimate the dissolved concentration of a chemical in three dimensions in groundwater resulting from a mass release over a source area. AT123D can handle: two kinds of source releases – instantaneous, continuous with a constant loading or time-varying releases; three types of waste–radioactive, chemicals, heat; four types of source configurations–a point source, a line source parallel to the x-, y-, z-axis, an area source perpendicular to the z-axis, a volume source; four variations of the aquifer dimensions–finite depth and finite width, finite depth and infinite width, infinite depth and finite width, infinite depth and infinite width.

Scientific Software Group    P.O. Box 708188   Sandy, Utah 84070
Phone (801) 208-3011   Toll Free (U.S.) 1-866-620-9214    Fax (801) 302-1160    E-mail
Copyright 1998   Scientific Software Group    All rights reserved