Abstract
We studied the spatial distribution characteristics of seismic motion intensities on the engineering bedrock around the southeastern Mt. Fuji region by using the seismic records. We used the ratios of response spectra between the observed record and calculated values by the existing attenuation relations as the index of seismic motion intensities. We compared the spatial distribution characteristics with topographical maps and geological maps. As a result of the zoning, the region was classified into five groups. Based on the zoning, we calculated the factors to correct the attenuation relation. The factors reflect the spatial distribution characteristics of each zoning group. We propose a new method to estimate acceleration response spectra on the engineering bedrock spread over a wide area.
