송도 인근 부유사농도 시계열의 반주기 성분과 보름주기 성분 특성

• 영문명: Semi-diurnal and Fortnight Periods of Suspended Sediment Concentration Variation Measured at Songdo on the West Coast of Korea
• 발행기관: 한국연안방재학회
• 저자명: 김효섭(Hyoseob Kim) 백승원(Seung-Won Baek) 이경필(Kyoung-Pil Lee)
• 간행물 정보: 『한국연안방재학회지』제2권 제1호, 9~15쪽, 전체 7쪽
• 주제분류: 사회과학 > 사회과학일반
• 파일형태: PDF
• 발행일자: 2015.01.30

영문 초록

Coastal area in Songdo is under the reclamation to be developed as an artificial echo-friendly city. The time series of suspended sediment concentration was measured for 23 days at a station in a main channel around Songdo on the west coast of Korea via turbidity. Sediment at the site is a mixture of mud and sand. The measured time-series of suspended sediment concentration at the site displays two dominant oscillation patterns: fortnight period oscillation and semi-diurnal period oscillation. The suspended sediment concentration is separated into three components, i.e. a base concentration as wash load, a fortnight period oscillation component of the fine sediment, and a semi-diurnal period oscillation component of the coarse sediment. Accurate settling velocities, critical erosion shear stresses and erosion rate coefficients at the site were computed from empirical equations. The model was applied to the site by involving two representative sediment sizes, sand and mud, and computed time-series of suspended sediment concentration agrees well with measurements. The model system was applied to the site for prediction of sediment transport and bathymetric change due to the development project, and the prediction results include that some zones may be eroded after the reclamation.

목차

1. 서 론

2. 측정부유사농도 시계열의 두 가지 주기

3. 부유사농도 변화 수치모형 실험

4. 인근해역의 퇴적물이동 체계 변화예측

4. 결 론

키워드

Mud and Sand Mixture Semi-diurnal period Fortnight period