Breakwater design for erosion control3/18/2024 The discussion is notably brief, primarily centered on the limitations of the proposal.The description of the study area needs to be more comprehensive, including information such as the tidal range, seasonal variations in wave conditions, and detailed insights into its morphological attributes, such as average sediment size, typical beach orientation, and so on.Moreover, maintain consistent orientation when depicting the same beach in different figures. The location maps need enhancements in formatting, including always the inclusion of coordinate grids, a scale, a legend, and a geographic north indicator.There are figures incorporated without a clear explanation of their intended use.If all three beaches are to undergo analysis, they should be depicted on a location map with a comprehensive representation of their distinctive characteristics, including the wave data points used for the analysis. However, the text only provides the location of Bongpo-Cheonjin Beach, leaving the purpose of the analyses on the other beaches unclear. The manuscript mentions three beaches, seemingly earmarked for analysis at various stages (Bongpo-Cheonjin Beach, Yeongrang Beach, and Maengbang Beach).The manuscript contains several instances of self-citation and fails to include essential and up-to-date references on the subject matter.It's uncertain whether the model introduced in this study can be easily applied to other study areas.The document's structure is disorienting, causing the reader to struggle in discerning the theoretical content from the parts focused on practical application cases.It doesn't address erosion damage control but rather presents a methodology for evaluating beach response in the presence of submerged structures. The title doesn't quite align with the manuscript's content.General comments are indicated below and more detailed comments are in the attached document: However, there is a need for a more detailed and well-justified explanation of the described method, along with substantial enhancements in terms of document formatting, English language proficiency, sentence cohesion, and overall structural integrity. Overall, the manuscript addresses an important topic in coastal engineering. examines how much wave energy reduction is provided by the transmission rate of a submerged detached breakwaters (SDBW) and what impact the diffraction process on the static equilibrium planform (SEP) behind the structure and the longshore sediment transport rate (LSTR). This rational approach, though with some limitations, for shoreline change behind permeable SDBWs will benefit the work on coastal management and mitigation of beach erosion. The applicability of this methodology is validated by comparing the observed data (wave and shoreline change) using closed circuit television on Bongpo-Cheonjin Beach in South Korea, with the calculated shoreline changes. This is to say that the shore-normal direction varies (rotates) along a curved equilibrium planform. In this study, the variation in the initial curved equilibrium planform downdrift of a harbor breakwater, before and after the installation of SDBWs, is estimated by the wave transmission coefficient through an SDBW and calculated longshore sediment transport of which the wave diffraction is considered. In the case of a single EDBW, a parabolic bay shape equation can be readily used to assess the shoreline planform behind the structure, yet no direct method for the SDBW. Both of these structures are (usually) constructed using precast concrete blocks or natural granite rocks, hence becoming permeable structures. Submerged detached breakwaters (SDBWs) have increasingly been used in recent times as an alternative against their emergent counterpart (EDBWs) to mitigate erosion because the former do not spoil the seascape.
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