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http://dx.doi.org/10.3741/JKWRA.2022.55.11.865

Impact of the coastal structures on the water circulation near Gusipo coast, Yellow Sea, Korea  

Kim, Cha-Kyum (Department of Industrial Safety Engineering, University of Gyeongnam Namhae)
Park, Il Heum (Department of Naval Architecture and Ocean Engineering, Chonnam National University)
Publication Information
Journal of Korea Water Resources Association / v.55, no.11, 2022 , pp. 865-875 More about this Journal
Abstract
Field measurements and numerical simulations using EFDC model were performed to quantify the changes of water circulation near Gusipo coast located in the Yellow Sea of Korea to estimate the impact of the construction of the coastal structures (jetty, groin, Gusipo port and bridge). The model predicted tide and tidal currents agreed reasonably well with the measurements. The maximum currents during spring tide near the Gusipo Beach (GB) have the range of 20~40 cm/sec whereas those off the GB range from 60 to 80 cm/sec. The typical patterns of tidal current show parallel with the local isobath. Tidal currents flow northeastward during the flood tide whereas the currents during the ebb tide flow southwestward. The current speeds at shielded waters after the construction of coastal structures strongly decreased as compared with those before the construction. The tidal volume due to the construction of coastal structures was estimated using the depth averaged velocity for 24 hours of spring tide. Tidal volume after construction of coastal structures was compared with initial state (before construction). Tidal volume at present state (after construction of jetty, groin, Gusipo port and bridge) decreased by 28.4% as compared with that of the initial state. The volume after construction of jetty and groin decreased by 21.3%, and the volume after construction of Gusipo port and bridge decreased by 9.8%.
Keywords
Tide; Tidal current; Coastal structure; EFDC; Numerical modeling;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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