Liquefaction Potential Estimation Based on the 7.5-arc-second Japan Engineering Geomorphologic Classification Map

Abstract

This study is examined the probability of liquefaction occurrence in terms of seismic intensities for each geomorphologic classification unit in the Japan Engineering Geomorphologic Classification Map based on the dataset of strong ground motion maps of recent earthquakes interpolated by the observation records and the liquefied sites during the past earthquakes. The geomorphologic units of similar ground conditions and liquefaction susceptibilities are grouped and their liquefaction probability functions are proposed based on cumulative normal distribution. Finally, the model was applied to the hypothetical Tonankai-Nankai earthquake and estimated liquefaction potential map with 250 m grid-cells was performed.