関東平野を対象とした震度分布予測

概要

論文の詳細を見る
A method for predicting isoseismal map is proposed for the Kanto Plain, on which Tokyo metropolitan area is situated. Seismic intensity on ground surface can be represented as product of that on seismic bedrock and site amplification factor of ground. Generally, it is difficult to know the site amplification factor over an area of interest, because of lack of sufficient data on the underground structure. The data of S-wave velocities measured at 350 sites in the Kanto Plain are collected. Based on the data, the correlation between the site amplification factor and subsurface geology is investigated. The seismic intensity for an earthquake is predicted by multiplying the site amplification factor estimated from subsurface geology into the intensity of seismic waves on bedrock which is calculated with regard to the fault rupture.
一般社団法人日本建築学会の論文