VRS-GPS Measure of Typhoon Surge Flood Determinedin Busan Coastal Topography

doi:2012.26.1.47

J. Ocean Eng. Technol. > Volume 26(1); 2012 > Article

J. Ocean Eng. Technol. 2012;26(1):47-53.
DOI: https://doi.org/10.5574/KSOE.2012.26.1.047

Kim Ga-Ya,Jung Kwang-Hyo,Kim Jeong-Ho

Department of Urban Engineering Dong-Eui University,Department of Naval Architecture and Ocean Engineering Dong-Eui University,Department of Urban Engineering Dong-Eui University

부산 연안지형 VRS-GPS 계측을 통한 태풍해일 침수예측

김가야,정광효,김정호

동의대학교 도시공학과,동의대학교 조선해양공학과,동의대학교 도시공학과

Keywords: Typhoon surge, Coastal flood, Typhoon wave height, Coastal topography, VRS-GPS

핵심용어: 태풍해일, 연안침수, 태풍파랑고, 연안지형, 가상기준점 실시간정밀측량

Abstract

A coastal flood area was predicted using the empirical superposition of the typhoon surge level and typhoon wave height along the Busan coastal area. The historical typhoon damages were reviewed, and the coastal topography was measured using VRS-GPS. A FEMA formula was applied to estimate the coastal flood area in a typhoon case when the measured and predicted data of typhoon waves are not available. The results in the area of Haeundae beach and Gwangalli beach were verified using the flood area data from the case of Typhoon Maemi (2003). If a Hurricane Katrina class typhoon were to pass through the Maemi trajectory, the areathat would be flooded along theBusan coastal area was predicted and compared with the results of the Maemi case. Because of the lack of ocean environment data such as data for the sea level, waves, bathymetry, wind, pressure, etc., it is hard to improve the prediction accuracy for the coastal flood area in the typhoon case, which could be reflected in the policy to mitigate a typhoon's impact. This paper discusses the kinds of ocean environment information that is needed to predict a typhoon's impact with better accuracy.