실용적 해안선 후퇴 반영 알고리즘

서지정보

· 발행기관 : 한국습지학회
· 수록지 정보 : 한국습지학회지 / 15권 / 3호
· 저자명 : 김효섭, 이정수, 진재율, 장창환

목차

1. 서 론
2. 해안선 후퇴를 고려한 모의 알고리즘의 제시
3. 해안선 후퇴를 고려한 모의 알고리즘의 적용성 검증
3. 결 론

초록

An algorithm to allow shoreline movement during numerical experiment on sediment transport, deposition or resuspension for
general coastal morphology is proposed here. The bed slope near shoreline, i.e. mean sea level, is influenced by bed
material, tidal current, waves, and wave-induced current, but has been reported to remain within a stable range. Its annual
variation is not large, either. The algorithm is adjusting the bathymetry, if the largest bed slope within shoreline band
exceeds a given bed slope due to continuous erosion at zones below the shoreline. This algorithm automatically describes
retreat of shoreline caused by erosion, when used within a numerical system. The algorithm was tested to a situation which
includes a continuous dredging at a point, and showed satisfactory development of concentric circle contours. Next, the
algorithm was tested to another situation which includes sinking of eroded part of bed plate, and produced satisfactory
results, too. Finally, the algorithm was tested to a movable-bed laboratory experimental conditions. The shoreline movement
behind detached breakwater was reasonably reproduced with this algorithm.

영어초록

An algorithm to allow shoreline movement during numerical experiment on sediment transport, deposition or resuspension forgeneral coastal morphology is proposed here. The bed slope near shoreline, i.e. mean sea level, is influenced by bedmaterial, tidal current, waves, and wave-induced current, but has been reported to remain within a stable range. Its annualvariation is not large, either. The algorithm is adjusting the bathymetry, if the largest bed slope within shoreline bandexceeds a given bed slope due to continuous erosion at zones below the shoreline. This algorithm automatically describesretreat of shoreline caused by erosion, when used within a numerical system. The algorithm was tested to a situation whichincludes a continuous dredging at a point, and showed satisfactory development of concentric circle contours. Next, thealgorithm was tested to another situation which includes sinking of eroded part of bed plate, and produced satisfactoryresults, too. Finally, the algorithm was tested to a movable-bed laboratory experimental conditions. The shoreline movementbehind detached breakwater was reasonably reproduced with this algorithm.

참고자료

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