Abstract
The accurate evaluations of Quaternary structure of the region are indispensable in order to accurately predict the seismic damage. However, deep borehole, PS logging and elastic wave exploration have been executed only on limited points around the Fukui Plain. The problems analyzed in this study are statistical estimations of the 3D Quaternary configuration of the Fukui Plain using data from 197 microtremor observations. The 3-components single-site microtremor observations were carried out in every mesh of the 1 minute interval which covers the Fukui Plain. The 3D configuration models of Quaternary have been evaluated by using kriging and cokriging procedure in which the correlations of the estimated depths of quaternary with the altitudes of the sites were taken into account. By comparing with kinds of inversion analysis results and boring data, the validity of the estimated structure was examined.
