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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Spatio-temporal Variability of AHHW in Relation with the Design Sea Level

설계조위와 관련된 약최고고조위의 시·공간적 편차

  • Kang, Ju Whan (Dept. of Civil Engineering, Mokpo National University) ;
  • Joo, Yang-Mi (Dept. of Civil Engineering, Mokpo National University) ;
  • Cho, Hongyeon (Marine Environment and Conservation Research Division, Korea Institute of Ocean Science and Technology) ;
  • Kweon, Hyuck-Min (Dept. of Railway Construction Environmental Engineering, Gyeongju University)
  • 강주환 (목포대학교 토목공학과) ;
  • 주양미 (목포대학교 토목공학과) ;
  • 조홍연 (한국해양과학기술원 해양환경보전연구부) ;
  • 권혁민 (경주대학교 철도건설환경공학과)
  • Received : 2014.03.14
  • Accepted : 2014.04.08
  • Published : 2014.04.30
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Abstract

The approximately highest high water(AHHW), which has been used frequently as a basis of the design sea level, has not only ambiguous return period but also spatio-temporal problems induced by sea level rise and the spatial variability of tidal characteristics. The ratios of 4 major constituents with other constituents were investigated. In addition, tidal data were analyzed by probability density function. The temporal variability may be cured by using the latest tidal data. And the AHHW at summer was examined to lessen the spatial variability. The results show that the design sea levels need to increase by 10 cm or more at the Southern Coast and by 15~25 cm at the East Coast.

설계조위 산정에 종종 이용되고 있는 약최고고조위는 발생빈도가 불분명할 뿐 아니라 평균해수면 상승에 따른 시간적 편차 및 해역별 조위특성 차이에 기인한 공간적 편차 등의 문제점을 내포하고 있다. 이러한 문제점을 해결하기 위해 해역별로 주요 4대분조 및 연주조 등의 비율을 조사하였고 확률분포함수에 의한 해석을 시행하였다. 시간적 편차문제는 최신조위자료를 활용함으로써 쉽게 해결될 수 있다. 공간적 편차문제를 해결하기 위하여 연주조를 고려함으로써 하절기에 형성되는 약최고고조위를 대안으로 제시하였다. 분석결과 남해안에서 10 cm 이상, 동해안에서 15~25 cm 정도의 설계조위 증분이 필요한 것으로 나타났다.

Keywords

References

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