using Surfer for Windows software; smoothing and contrasting color contouring schemes are selected as needed. Contour maps are labeled with objects of known interference (fences, sewer lines, etc) and interpreted features using information from field notes and suspected conditions.
Contour map of magnetic anomalies of a landfill.
Similar to EM data, magnetic data are often computer gridded, producing a data set which can be contoured or displayed as a 3-dimensional surface.  Full data processing and editing are applied to the data once out of the field and back in the office. The various steps applied during processing are data-specific but include conversion of data from a raw file format to a standard (X, Y, Z) file format. Data are gridded

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