Two and three dimensional geophysical survey data need good visualization tools. Golden Software's Surfer and Voxler products are two fine examples. Surfer provides tools for interpolation of continuous surfaces from sample data using a variety of interpolation tools and with a range of outputs from contours to 3D terrain models.
More interestingly, for working with 3D geophysical data such as time-sliced GPR, Voxler provides tools for 3D interpolation of volumes and modeling and visualization using a variety of methods, including voxels (hence the name) volumetric models, etc.
Save disabled trial versions are free downloads, not time limited and provide an excellent way to get to grips with sophisticated modelling and visualization of geophysical survey data.