Seite - 1326 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- AN ANALYSIS ON THE BEHAVIORS OF A DAM FOR THE EARTHQUAKE IN SOUTH KOREA TAEGEUN LEE, BAEGUN CHO, GYEONGJIN KIM, TAEKANG YUN Department of Inspection for hydraulic structure KOREA INFRASTRUCTURE SAFETY & TECHNOLOGY CORPORATION SOUTH KOREA 1. GENERAL INTRODUCTION Earthquake was unusual case in South Korea until 2 years ago. However, earthquakes occurring in Gyeongju and Pohang region made people living in South Korea aware that Korea is no longer safe from earthquake. Especially, Gyeongju Earthquake currently has the largest record since 1978 which seismological observation of South Korea has begun. The fore shock measured to magnitude 5.1 occurred at 9 km point south-south-west in Gyeongju, 7:44 pm on September 12, 2016. After 48 minutes, the main shock measured to magnitude 5.8 occurred at 8 km point south-south-west in Gyeongju. Table 1. Ranking for magnitude in South Korea Rank Magnitude Date & Time Epicenter Lat. Long. Site 1 5.8 20:32, 12th Sep. 2016 35.8 129.2 Gyeongju 2 5.4 14:29, 15th Nov. 2017 36.1 129.4 Pohang 3 5.2 19:14, 29th May 2004 36.8 130.2 Sea near Uljin 4 5.2 02:07, 16th Sep. 1978 36.6 127.9 Sangju 5 5.1 19:44, 12th Sep. 2016 35.8 124.5 Gyeongju 1326