Ground penetrating radar (GPR) data from three sites are processed using seismic analysis techniques. Processing operations performed include: gain recovery, spiking deconvolution, bandpass filtering, velocity analysis, elevation and static corrections, NMO corrections, and f-k migration. In the first example, we analyze 0.5 km lines of 50 MHz and 100 MHz, single-fold data and a common receiver (CR) gather from the William River delta, Lake Athabasca, Saskatchewan. Next, a 100 MHz, single-fold, 120 m line from the Slave River delta, Ft. Smith, N.W.T. is processed using the previous steps. Finally, 100 m of 100 MHz, single-fold data (also with a CR gather) from Brigham City, Utah are analyzed. Filter bands chosen for the 50 MHz and 100 MHz data were 10/20–75/100 MHz and 20/30–150/180 MHz respectively. Velocity spectra for William River delta and Brigham City are based on CR gather velocity semblances and interpreted arrivals. Velocities range from 0.3 m/ns (air) to about 0.07 m/ns (wet sand). Dry sands at Brigham City result in radar velocities of 0.14 m/ns. High-velocity surface statics (from drier sands of 0.125 m/ns) are corrected by interpreting shallow arrivals. The Slave River velocities of 0.06 m/ns suggest a sand with higher water saturation, lower porosity, or increased fine material. Application of seismic processing techniques improves the GPR sections considerably.
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Stewart et al. (1996) studied this question.