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| | Abstract | | The Bayon temple in the Angkor area in Cambodia is damaged by heavy rain. Understanding the drainage mechanism is important to preserve the ruin. This study reports the survey results of ground-penetrating radar (GPR). GPR could detect the boundary of artificial excavation around the temple, which was excavated at the time of constructing the temple. Radar penetration depths changed spatially on the terrace near the center of the temple and there are inhomogeneous structures in the underground. Radar velocities drastically decreased below the depth of 1 meter under the terrace, which insists that there are high water content zones in shallow areas of the terrace. |
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