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Storm Surge Vulnerability Assessment due to Typhoon Attack on Coastal area in Korea

태풍 내습으로 인한 연안역 해일 취약성 평가

Kang, Tae-Soon;Oh, Hyeong-Min;Lee, Hae-Mi;Eum, Ho-Sik
강태순;오형민;이해미;엄호식

  • Received : 2015.09.18
  • Accepted : 2015.10.27
  • Published : 2015.10.31

Abstract

In this study, we have estimated the storm surge heights using numerical modeling on coastal area, and then evaluated the vulnerability index by applying the vulnerability assessment techniques. Surge modelling for 27 typhoons affected from 2000 to 2014 were simulated by applying the ADCIRC model. The results of validation and verification was in significant agreement as compared with observations for the top 6 ranking typhoons affected. As results, the storm surge heights in Jinhae Bay, Sacheon Bay, Gwangyang Bay, Cheonsu Bay and Gyeonggi Bay were higher than other inner coastal areas, then storm surge vulnerability assessment was performed using a standardization, normalization and gradation of storm surge heights. According to results of storm surge vulnerability assessment, index of Jinhae Bay, Sacheon Bay, Gwangyang Bay etc. are estimated to be vulnerable(4~5) because of the characteristics of storm surge such as inner bay are vulnerable compared with exposed to the open sea areas. However, index in the inner bay of western Jeonnam are not vulnerable(1~3) relatively. It may not appear the typhoons affected significantly for the past 15 years. So, the long-term vulnerability assessment with the sensitivity of geomorphology are necessary to reduce the uncertainty.

Keywords

Storm surge modelling;Typhoon;Surge heights;Vulnerability assessment;Index

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  1. Variation Characteristics of the Groundwater Level of Natural Vegetation and Sandy Beaches vol.19, pp.1, 2016, https://doi.org/10.7846/JKOSMEE.2016.19.1.62

Acknowledgement

Supported by : 농촌진흥청