Constructing subsurface profiles using GIS

A geographic information system (GIS) macro procedure for creating subsurface profiles from well log data is developed. The well log data base is constructed from interpretation of a series of borehole geophysical logs. The GIS procedure targets a modelling area and interpolates the well data base to create a three-dimentional representation of the subsurface environment. Any number of cross-sectional profiles or three-dimensional images of well log data may be created and viewed interactively. The resulting profiles provide basic geometric data for ground water flow and contaminant transport models. A brief introduction to the ARC/INFO system, emphasizing the attributes of the data structure and the macro language, is given. Several subsurface profiles of Shelby County, Tennessee are developed using the GIS profile procedure. © 1994