A Study Of A Liquefaction Hazard Map On Groundwater Levels And Various Ground Accelerations In The Republic Of Korea

The Pohang earthquake, that took place on November 15th, 2017, produced the first liquefaction phenomenon in the Republic of Korea. As a result, the liquefaction phenomenon had grained much focus and attention from the public through the events of the earthquake. In this study, an assessment was performed on the possible liquefaction of the ground in the event of an earthquake. In addition, the entire region of the Republic of Korea calculated the liquefaction potential index using the data of the average annual underground level and various bedrock peak ground acceleration levels with the Arc GIS. The results of this study showed that for ground acceleration of 0.18g or higher, there was a possibility of liquefaction in coastal areas such as Pohang, where liquefaction occurred. From these results, it is expected that the study on the preparation of liquefaction hazard maps will contribute to the preparation of countermeasures against liquefaction by predicting the possibility of liquefaction in the future.