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| | Abstract | | The 2-D surface wave method is thought to be an effective technique in the execution of the seismic assessment of long and large water supply facilities. Because the analysis using this method is performed on the assumption of flat ground, it is necessary to understand the influence of geographical features along the survey lines before field application. Therefore, the observation data in the irregular ground were calculated by the viscoelastic wave fields calculation technique with the 2-D finite-difference method that was able to consider geographical features. And the influence of geographical features was examined by analyzing those data. As a result, it is clarified that the terrain effect is not so much when a slope angle is 20 degrees or fewer. |
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