2017 Volume 17 Issue 2 Pages 2_38-2_61
In order to clarify the spatial variation of the ground motions, we carried out verification tests for evaluation of the spatial variation of the ground motions using high-density horizontal array observation records of 10 observation points in the Quaternary ground having a substantially horizontal geological structure. As part of the verification tests, we performed Monte Carlo simulations using two-dimensional heterogeneous ground models estimated from the in-situ ground data, and attempted to estimate the spatial variation of the ground motions. As a result, based on the ground heterogeneity obtained from the in-situ ground survey, it is possible to estimate the spatial variation characteristics (spatial correlation coefficient, variation) of the ground motions in the local ground with a range from several meters to 200 meters.
