동해 파랑관측 자료를 활용한 포물선형 평형해안선 식의 타당성 조사

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 32; no. 2; pp. 123 - 130
• Main Authors: 임창빈(Chang Bin Lim), 이정렬(Jung Lyul Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2018
• Subjects: 해양공학; Wave rose 파랑장미도; Littoral drift rose 연안표사장미도; Wave directional spectrum 파향스펙트럼; Groyne 돌제; East Coast 동해안; Shoreline gradient 해안선 기울기
• ISSN: 1225-0767; 2287-6715
• DOI: 10.26748/KSOE.2018.4.32.2.123

The present study investigated the validity of an equilibrium shoreline empirical formula for real phenomena. Among three types of equilibrium shoreline formulas, Hsu's parabolic type static formula was employed, which is well-known and the most practical for shoreline estimation after coastal or harbor structure construction. The wave data observed at Maengbang beach and the CERC formula on longshore sediment transport were used in the present investigation. A comparison study was only conducted for the case of a shoreline change after the construction of a groyne. Reasonable agreement was seen between the observed wave data and the data obtained under a wave angle spreading function S = 3.5. However, significant changes were observed when S increased. Thus, careful application is required when using Hsu's formula.