Browse > Article
http://dx.doi.org/10.17663/JWR.2013.15.3.423

A Practical Algorithm to Simulate Erosion of On-Shore Zone  

Kim, Hyoseob (Department of Civil Engineering, kookmin university)
Lee, Jungsu (Department of Civil Engineering, kookmin university)
Jin, Jae-Youll (Coast Disaster Research Center, Korea Institute of Ocean Science Technology)
Jang, Changhwan (Construction Technology Examination Division, Korean Intellectual Property Office)
Publication Information
Journal of Wetlands Research / v.15, no.3, 2013 , pp. 423-430 More about this Journal
Abstract
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.
Keywords
shoreline movement; CST3D; numerical model; erosion;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hanson, H (1988). Genesis-A generalized shoreline change numerical model. J. of coastal research, 5(1), pp. 1-27.
2 Johnson, BD, Kobayashi, N. and Gravens, MB (2012). Cross-shore numerical model CSHORE for waves, currents, sediment transport and beach profile evolution.
3 Kim, HS (2013). CST3D User Manual V1. Korea Institute of Ocean Science Technology.
4 Kim, HS, Lee, JS, Yoo, HJ, LEE, JW (2012). Numerical Model with -coordinate and hydrodynamic for open channel flows, J. of Korean Society of Civil Engineers, Conference, pp. 2109-2113.
5 Kraus, NC (1981). One-line model development and simulation for Oarai beach, NERC Report, 15, Japan.
6 Lee, SH, Shin, DS, Her, SG (1995). A Study of Numerical Shoreline Change Model for SANGJU beach, J. of Korean Society of Civil Engineers, 15(1), pp. 229-238.
7 Lee, HS, Kim, IH (2007). Investigation and Analysis of Shoreline Change using DGPS. J. of the Korean Association of Geographic Information Studies, 10(2), pp. 1-10.
8 Ming, D. and Chiew, YM (2000). Shoreline changes behind detached breakwater. J. of Waterway, Port, Coastal, and Oecan Engineering, 126(2), pp. 63-70.   DOI   ScienceOn
9 Ministry of Land, Transport and Maritime Affairs (2010). Development of Coastal Erosion control technology. 11-1611000-001508-1.
10 Oh, SY, Min, BH, Kim, JH, Kim, KC, Kim, JJ (1992). A Study on the Coastal Development Model Due to Construction of Artificial Island. J. of Ocean Engineering and Technology, 6(2), pp. 133-142.
11 Ozasa, H. and Brampton. AH (1979). Models for predicting the shoreline evolution of beaches backed by seawalls. Report of the Port and Harbor Research Ins, 18(1), pp. 78-104.
12 Perlin, M. and Dean, RG (1983). A Numerical model to simulate sediment transport in the vicinity of coastal structures. U.S Army. CERC. Miscel. Rep. 83-10.
13 Roelvink, D, Reniers, A, Van Dongeren, A, Van Thiel de Vries, J, Mccall, R, Lescinski, J (2009). Modelling storm impacts on beaches, dunes and barrier islands. Elsevier, 56(11-12), pp. 1133-1152.
14 Roelvink, D, Reniers, A, Van Dongeren, A, Van Thiel de Vries, J, Lescinski, J, Mccall, R (2010). XBeach model description and manual.
15 Shibutani, Y, Kuroiwa, M. and Matsubara, Y (2008). N-Line model for predicting beach evolution due to nourished sands. IEEE. pp. 1-8.