Evaluation of Ground Motion Characteristics on The Edge of Diluvial Terrace

Abstract

In this study, we carried out evaluations of ground motion characteristics in natural slope and cut slope in Chiba city. We have carried out seismic observation at the top of slope and on the terrace. Then we confirm that large amplification of ground motion arise at top of the natural slope. Therefore, we made ground models estimated from survey and calculated transfer function by dynamic analysis of two dimensional finite element method. The results show more accurate characteristics of ground motion than that of one dimensional analysis. We conclude that the soft soil on natural slope at the edge of terrace causes a large amplification of earthquake motion.