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| | Abstract | | Ground penetrating radar (GPR) has an important role in ground water explorations. Dielectric permittivity of water is the largest in the medium of underground. By the investigation the shallow part of the subsurface ground, we have been obtaining effective information of ground water. It has not been, however, discussed quantitatively about dielectric permittivity for GPR. We conducted the model experiment using a test tank filled with siliceous sand. CMP gather were acquired by the split spread method varying the saturation water table. The continuous wave radar was used as GPR system which was assembled the network analyzer, TX and RX antennas. Furthermore soil tests were conducted to calculate the volumetric water content of siliceous sand with different water table. The measured results are consistent with existing data. |
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