Each sounding is interpreted independantly with a 1D model produced under the sounding location. When all soundings have been inverted, a composite two-dimensional model is written out to facilitate interpretation of a line of soundings. There are four variations of the inversion algorithm. Clearly, many permutations of model type, data type and algorithm choice are possible, therefore the program is significantly more complexe to manage than previous UBC-GIF inversion codes. Also, input file structures are complicated in order to facilitate this flexibility.
Documentation is provided in four parts.
Background theory is provided in an Acrobat PDF document. It summarizes the detailed mathematical basis of the forward modelling and inversion algorithms. It contains detailed descriptions of the main input file, the observations file, model files, and output files and messages. There are also brief descriptions of two utility programs and the independant forward modelling program. Examples are given showing application of the inversion algorithm to synthetic and real field data sets.