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| | Abstract | | We applied ground-penetrating radar (GPR) to try to acquire information on water table and the boundary between decomposed granitic soil and intact granite in a mountain located in the Akaishi range. The survey results showed many reflection events within the depth of approximately 7 m from surface using an antenna with a center frequency of 400 MHz. The deep penetration of radar waves indicates the higher resistivity of the granitic soil/granite in the studied area. The results also suggested the difficulty to obtain information related to water table by GPR while it is possible to detect the boundary between weathered and unweathered layers. |
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