관측자료에 기반한 미래 해수위 예측 및 연안지역 침수위험면적 분석 - 부산시 해운대구 일대를 대상으로 -
Estimation of Peak Water Level Based on Observed Records and Assessment of Inundation in Coastal Area – A Case Study in Haeundae, Busan City –
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초록
해수면상승으로 인한 연안지역의 영향평가를 위해 부산시 해운대구 일대를 대상으로 해수위 예측모형과 미래 침수위험지역 분석을 수행하였다. 과거 평균해수위자료(1960-2016)를 활용한 통계적 분석을 통해 해수면상승 예측 모형과 불규칙 성분을 산정하고 파고자료(2012-2017)와 계산 조위값의 확률밀도함수와 종합하여 몬테카를로 시뮬레이션을 통해 해수면상승, 불규칙 성분, 파고, 조위를 종합한 미래 최고해수위를 모의하였다. 이에 미래 1% 발생가능성 최고해수위는 2050, 2080, 2100년 2.3, 2.6, 2.8m로나타났으며, 침수위험지역은 우동, 용호동, 송정동, 재송동이 가장 클 것으로 나타났다.
Abstract
For impact assessment of inundation in coastal area due to sea level rise (SLR), model for estimating future peak water level was constructed using observed mean sea level (MSL), storm surge level (SSL) data and calculated tide level (TL) data. Based on time series analysis and quadratic polynomial model for SLR and Monte-Carlo simulation for IC, SSL and TL, 100-year return peak water level is expected to be 2.3, 2.6, 2.8m, respectively (each corresponding to year 2050, 2080, 2100). Further analysis on future potential inundation area showed U-dong, Yongho-dong, Songjeongdong, Jaesong-dong to be at high risk.
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