The fill ground has higher risk of seismic damages comparing to the cut ground. However, few attempts have been made so far to measure actual seismic responses and to investigate the difference of seismic responses between the fill ground and the cut ground. Accumulation of basic observation data is required for evaluating the fill slope stability against the earthquake. Authors performed in-situ array seismic observation in the fill ground and the cut ground for two years. Four seismographs, a rain gauge, a water table gauge and two soil moisture sensors are installed in this observation area. This paper shows differences of seismic responses between the fill ground and the cut ground. And influences of the soil moisture to the seismic responses are studied.
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