Depth of closure determination in the vicinity of coastal structure

W. Widyaningtias, Hitoshi Tanaka, Susumu Kanayama

研究成果: Conference contribution

1 引用 (Scopus)

抜粋

This study is conducted to analyze the effect of coastal structure to depth of closure variation. Analysis on time series bathymetry data has been applied to determine location of depth of closure. The deviation of bathymetry profile changing is also considered. Furthermore, longshore variation of depth of closure is proposed. The hydrodynamic conditions are simulated using Boussinesq model derived by Peregrine (1967). This model is applied considering its applicability to observe non-linear and dispersion phenomenon while wave propagates to the shoreline. The simulation is carried out under regular wave assumption with 20% wave height in deep area is applied as representative wave. The simulation results are obtained in term of surface water level, bottom velocity in x and y direction and current velocity. The result is utilized to calculate maximum bottom velocity just outside boundary layer. To observe sediment movement along the coast, maximum shear stress is calculated under wave-current combined motion. Dimensionless Shields parameter is also assessed. The simulation results are depicted in spatial map. Furthermore, the effect of coastal structure to depth of closure variation is confirmed using hydrodynamic conditions.

元の言語English
ホスト出版物のタイトルProceedings of the 33rd International Conference on Coastal Engineering 2012, ICCE 2012
出版物ステータスPublished - 2012 12 1
イベント33rd International Conference on Coastal Engineering 2012, ICCE 2012 - Santander, Spain
継続期間: 2012 7 12012 7 6

出版物シリーズ

名前Proceedings of the Coastal Engineering Conference

Other

Other33rd International Conference on Coastal Engineering 2012, ICCE 2012
Spain
Santander
期間12/7/112/7/6

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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  • これを引用

    Widyaningtias, W., Tanaka, H., & Kanayama, S. (2012). Depth of closure determination in the vicinity of coastal structure. : Proceedings of the 33rd International Conference on Coastal Engineering 2012, ICCE 2012 (Proceedings of the Coastal Engineering Conference).