CREATION OF HAZARD MAPS BY CONSIDERING REGIONAL CHARACTERISTICS BY MICROTREMORS

Abstract

The aim of this study is to understand the ground hazards of an area by considering its ground-vibration characteristics by means of a relatively simple method based on the horizontal-to-vertical spectral ratio (HVSR) derived using single-point microtremor observations. The applicability of evaluating the ground hazard as the product of the predominant period and peak value from the HVSR is examined. It is confirmed that the ground-hazard distribution map so created is consistent with the average shear-wave velocity in the upper 30 m, which is a seismic-code standard.