Storm Surge Characteristics According to the Local Peculiarity in Gyeongnam Coast

J. Ocean Eng. Technol. 2006;20(3):45-53.

Hur Dong-Soo;Yeom Gyeong-Seon;Kim Ji-Min;Kim Do-Sam;Bae Ki-Sung;

Institute of Marine Industry, Division of Civil and Environmental Engineering, Gyeongsang National University;Division of Civil and Environmental Engineering, Graduate School, Gyeongsang National University;Division of Construction and Environmental Engin

경남연안의 지역특성에 따른 폭풍해일고의 변동

허동수;염경선;김지민;김도삼;배기성;

경상대학교 토목환경공학부 해양산업연구소;경상대학교 대학원 토목환경공학부;한국해양대학교 대학원 건설환경공학부;한국해양대학교 건설환경공학부;경상대학교 토목환경공학부 해양산업연구소;

Keywords: Typhoon Maemi, Yyphoon Sarah, Typhoon Thelma, Numerical simulation, Storm surge height, Local peculiariaty

핵심용어: 태풍 매미, 태풍 사라, 태풍 셀마, 수치시뮬레이션, 폭풍해일고, 지역특성

Abstract

Each year, the south coast of Korea is badly damaged from storm surge. The damages are greatly dependent upon the local peculiarities of the region where the storm surge occurs. So, in order to prevent/reduce recurrence of the disaster, it is very important to investigate the fluctuation characteristics of the storm surge height, related to the local peculiarities at each coastal area where occurrence of the disaster is expected. In this paper, using the numerical model, the storm surge was simulated to examine its fluctuation characteristics at the Gyeongnam coast (southeast coast of Korea). Typhoons of Sarah (5914), Thelma (8705) and Maemi (0314), which caused terrible damage to the coastal area in the southeast coast of Korea in the past, were used forstorm surge simulations. Moreover, the storm surge due to virtual typhoons, which were combined the characteristics of each proposed typhoons (Maemi, Sarah, Thelma)with the travel route of other typhoon, was predicted. As expected, the results revealed that the storm surge heights are enhanced at the coastal regions with the concavity like a long-shaped bay. Also, the storm surge heights, due to each typhoon, were compared and discussed at major points along the Gyeongnam coast, related to the local peculiarities, as well as the characteristics and the travel route of typhoon.