Abstract:Ground‐penetrating radar (GPR) can be used to determine the depth to a subsurface layer if the user can identify where the ground surface is on the GPR trace. This study demonstrates a simple field procedure for unequivocally determining the ground surface in a GPR trace. A “lift test” was performed simply by raising the transceiving antenna unit off the ground and setting it back down while the GPR unit was recording. This procedure produced a distinct wave pattern on the GPR profile that clearly showed the s… Show more
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