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Article

Experimental Study on the Sediment-Trapping Performance of Different Coastal Protection Structures in a High-Tidal Range Area

by
Hao-Nan Hung
1,
Hsin-Hung Chen
2,* and
Ray-Yeng Yang
1,*
1
Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan 701401, Taiwan
2
Tainan Hydraulics Laboratory, National Cheng Kung University, Tainan 709015, Taiwan
*
Authors to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(6), 1022; https://doi.org/10.3390/jmse13061022
Submission received: 25 March 2025 / Revised: 14 May 2025 / Accepted: 21 May 2025 / Published: 23 May 2025
(This article belongs to the Special Issue Morphological Changes in the Coastal Ocean)

Abstract

This study evaluates the sediment-trapping performance of three coastal protection structures—submerged breakwaters, derosion lattices, and a composite seawall–submerged breakwater system—under monsoon and typhoon wave conditions. Physical model experiments were conducted in a wave basin with a movable-bed setup and variable water levels to simulate high tidal range environments. The results show that all three structures significantly improved sediment retention in the landward region, with the composite system performing best, followed by the submerged breakwaters and derosion lattices. However, in the seaward region, the sediment retention was 55.36% lower with submerged breakwaters and 126.79% lower with the composite system, relative to the no-structure case under monsoon wave conditions. Notably, the derosion lattice was the only structure that consistently achieved greater sediment retention than the no-structure case on both the seaward and landward sides.
Keywords: coastal protection; physical model experiments; variable water levels; sediment retention; derosion lattice coastal protection; physical model experiments; variable water levels; sediment retention; derosion lattice

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MDPI and ACS Style

Hung, H.-N.; Chen, H.-H.; Yang, R.-Y. Experimental Study on the Sediment-Trapping Performance of Different Coastal Protection Structures in a High-Tidal Range Area. J. Mar. Sci. Eng. 2025, 13, 1022. https://doi.org/10.3390/jmse13061022

AMA Style

Hung H-N, Chen H-H, Yang R-Y. Experimental Study on the Sediment-Trapping Performance of Different Coastal Protection Structures in a High-Tidal Range Area. Journal of Marine Science and Engineering. 2025; 13(6):1022. https://doi.org/10.3390/jmse13061022

Chicago/Turabian Style

Hung, Hao-Nan, Hsin-Hung Chen, and Ray-Yeng Yang. 2025. "Experimental Study on the Sediment-Trapping Performance of Different Coastal Protection Structures in a High-Tidal Range Area" Journal of Marine Science and Engineering 13, no. 6: 1022. https://doi.org/10.3390/jmse13061022

APA Style

Hung, H.-N., Chen, H.-H., & Yang, R.-Y. (2025). Experimental Study on the Sediment-Trapping Performance of Different Coastal Protection Structures in a High-Tidal Range Area. Journal of Marine Science and Engineering, 13(6), 1022. https://doi.org/10.3390/jmse13061022

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