Inundation Analysis Considering Water Waves and Storm Surge in the Coastal Zone

J. Ocean Eng. Technol. 2007;21(2):35-41.

Kim, Do-Sam;Kim, Ji-Min;Lee, Gwang-Ho;Lee, Seong-Dae;

Division of Construction and Environmental Engineering, Korea Maritime University;Department of Civil and Environmental Engineering, Graduate School, Korea Maritime University;Department of Civil Engineering, Nagoya University;Department of Civil and Engi

연안역에서 고파랑과 폭풍해일을 고려한 침수해석

김도삼;김지민;이광호;이성대;

한국해양대학교 건설환경공학부;한국해양대학교 대학원 토목환경공학과;나고야대학교 토목공학과;한라대학교 토목공학과;

Keywords: Inundation analysis, Coastal area, Shallow water wave, Storm surge, Wave overtopping rate

핵심용어: 침수해석, 연안역, 천해파랑, 폭풍해일, 월파량

Abstract

In general, coastal damage is mostly occurred by the action of complex factors, like severe water waves. If the maximum storm surge height combines with high tide, severe water waves will overflow coastal structures. Consequently, it can be the cause of lost lives and severe property damage. In this study, using the numerical model, the storm surge was simulated to examine its fluctuation characteristics at the coast in front of Noksan industrial complex, Korea. Moreover, the shallow water wave is estimated by applying wind field, design water level considering storm surge height for typhoon Maemi to SWAN model. Under the condition of shallow water wave, obtained by the SWAN model, the wave overtopping rate for the dike in front of Noksan industrial complex is calculated a hydraulic model test. Finally, based on the calculated wave-overtopping rate, the inundation regime for Noksan industrial complex was predicted. And, numerically predicted inundation regimes and depths are compared with results in a field survey, and the results agree fairly well. Therefore, the inundation modelthis study is a useful tool for predicting inundation regime, due to the coastal flood of severe water wave.