STUDY OF 3D SUBSURFACE STRUCTURE MODELING METHOD USING BORING DATA AND MICROTREMORS OBSERVATIONS [Translated Paper]

Abstract

To facilitate effective and efficient earthquake disaster prevention, understanding the subsurface structure of an area with a high degree of accuracy is important. Generally, accurate subsurface structure estimation requires high-density borehole data; however, the low density of boring data in regional cities makes it difficult to construct a highly accurate subsurface structure model. Recently, technological progress has been made in estimating the subsurface structure using microtremors observations. Thus, in this study, we attempted to estimate the three-dimensional subsurface structure with high accuracy by combining borehole and microtremor observation data. The validity of the estimated subsurface structure was validated in terms of topography and amplification characteristics.