QTRACER PROGRAM FOR TRACER-BREAKTHROUGH CURVE ANALYSIS FOR KARST AND FRACTURED-ROCK AQUIFERS
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An efficient, reliable, and easy-to-use computer program, QTRACER, designed to run on PCs running any version of MS-DOS or Windows, has been developed to facilitate tracer-breakthrough curve analysis. It solves the necessary equations from user-generated data input files using robust integration routines and by relying on established hydraulic models. Additional features include dynamical memory allocation, ability to extrapolate late-time data using any one of three different methods, two separate methods for handling oversized time-concentration data files, and a powerful interactive graphics routine.
Two other programs are included to facilitate the use of QTRACER. The first, NDATA, allows the user to interpolate either their time-concentration or time- discharge data files to fill in data gaps. The second program, AUTOTIME, allows the user to convert time-concentration data files recorded using military time into sequential decimal time as required by QTRACER. Files created by these two programs may be appended to the bottom of a sampling station data file that can be read by QTRACER.