Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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A Study on the Methods to Improve High-Wave Reproducibility during Typhoon

태풍 내습 시의 고파 재현성 개선방안 연구

  • Jong-Dai, Back (Coast and Ocean Technology Research Institute) ;
  • Kyong-Ho, Ryu (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology) ;
  • Jong-In, Lee (Department of Civil Engineering, Chonnam National University) ;
  • Weon-Mu, Jeong (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology) ;
  • Yeon-S., Chang (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
  • 백종대 ((주)해안해양기술) ;
  • 류경호 (한국해양과학기술원 해양ICT융합연구센터) ;
  • 이종인 (전남대학교 공과대학 토목공학과) ;
  • 정원무 (한국해양과학기술원 해양ICT융합연구센터) ;
  • 장연식 (한국해양과학기술원 해양ICT융합연구센터)
  • Received : 2022.10.18
  • Accepted : 2022.11.01
  • Published : 2022.12.31
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Abstract

This study estimates the design wave in the event of a typhoon attack at Busan new port using the wind field, the revised shallow water design wave estimation method proposed by the Ministry of Oceans and Fisheries in 2020, and proposed a reliable method of calculating the shallow water design through verification with the wave observation data. As a result of estimating typhoon wave using the wind field and SWAN numerical model, which are commonly used in the field work, for typhoon that affected Busan new port, it was found that reproducibility was not good except typhoons KONG-REY(1825) and MAYSAK(2009). In particular, in the case of typhoon MAEMI(0314), which had the greatest impact on Busan new port, the maximum significant wave height was estimated to be about 35.0% smaller than that of the observed wave data. Therefore, a plan to improve the reproducibility of typhoon wave was reviewed by applying the method of correcting the wind field and the method of using the Boussinesq equation numerical model, respectively. As a result of the review, it was found that the reproducibility of the wind field was not good as before when the wind field correction. However as a method of linking wind field data, SWAN model results, and Boussinesq numerical model, typhoon wave was estimated during typhoon MAEMI(0314), and the maximum significant wave was similar to the wave observations, so it was reviewed to have good reproducibility.

본 연구는 2020년 해양수산부에서 제시한 개정된 천해설계파 추산방법인 바람장을 이용하여 부산항 신항을 대상으로 태풍 내습 시 설계파를 추산하고 파랑 관측자료와의 검증을 통해서 신뢰할 수 있는 천해설계파 산출방법을 제안하였다. 부산항 신항에 영향을 미친 태풍에 대해서 현업에서 일반적으로 많이 사용하고 있는 태풍 바람장과 SWAN 수치모델을 이용하여 태풍파를 추산한 결과 태풍 KONG-REY(1825), MAYSAK(2009)을 제외하고 재현성이 불량한 것으로 나타났다. 특히 부산항 신항에 가장 크게 영향을 미쳤던 태풍 MAEMI(0314)의 경우 최대유의 파고가 파랑 관측치에 비해서 약 35.0% 작게 추산되었다. 이에 바람장을 보정한 방법과 Boussinesq 방정식 수치모델을 이용하는 방법을 각각 적용하여 태풍파 재현성 개선방안을 검토하였다. 검토결과 바람장을 보정한 경우는 바람장 보정전과 동일하게 재현성이 떨어지는 것으로 나타났으나, 바람장 자료와 SWAN 모델 실험결과 그리고 Bou ssinesq 수치모델을 연계하는 방법으로 태풍 MAEMI(0314) 내습 시 태풍파를 추산한 결과 파랑 관측치와 최대유의파고가 유사하게 나타나 재현성이 양호한 것으로 검토되었다.

Keywords

Acknowledgement

본 연구는 한국해양과학기술원의 "(PG52070)부산항 신항해양수리현상 연구개발용역(4단계)(4차)"의 지원을 받아 수행되었습니다.

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