Qtracer Program for Tracer-Breakthrough Curve Analysis for Karst and Fractured-Rock Aquifers
Notice - This site contains archived material(s)
Archived files are provided for reference purposes only. The file was current when produced, but is no longer maintained and may now be outdated. Persons with disabilities having difficulty accessing archived files may contact the NCEA Webmaster for assistance. Please use the contact us form if you need additional support.
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.