Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition
Submerged artificial sandbars (SABs) are increasingly favored as an efficient method for beach nourishment, helping to mitigate beach erosion and maintain the sediment transport budget, thus promoting ecological stability. A comprehensive understanding of the morphodynamical evolution of the submerg...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-01-01
|
| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1530904/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841527125865136128 |
|---|---|
| author | Wenliang Zhang Junli Guo Lianqiang Shi Zhuocheng Liu Qinghua Ye Cuiping Kuang Yu Peng Huangzhe Qi |
| author_facet | Wenliang Zhang Junli Guo Lianqiang Shi Zhuocheng Liu Qinghua Ye Cuiping Kuang Yu Peng Huangzhe Qi |
| author_sort | Wenliang Zhang |
| collection | DOAJ |
| description | Submerged artificial sandbars (SABs) are increasingly favored as an efficient method for beach nourishment, helping to mitigate beach erosion and maintain the sediment transport budget, thus promoting ecological stability. A comprehensive understanding of the morphodynamical evolution of the submerged artificial sandbar-beach profile is essential. This study employs a scaled-down moving-bed flume test to examine the dynamic geomorphological evolution of the submerged artificial sandbar-beach system under regular wave conditions. Twenty experiments, each with different wave heights and periods representative of the Zhejiang coast, were conducted. The study investigated the profile evolution and wave parameters of the submerged artificial sandbar-beach model. The results reveal low wave reflection in front of the sandbar, indicating that under the tested wave conditions, the sandbar primarily serves as a sediment source rather than effectively reflecting wave energy. In all scenarios, the top of the sandbar migrates shoreward, and the sandbar’s contour shape becomes asymmetric. For smaller wave periods, localized erosion occurs in the troughs, while larger periods result in complete siltation. Continuous sediment transport into the trough characterizes the beach face, with sediment movement controlled by wave height and period. A linear or nonlinear relationship between sandbar erosion depth, beach slope, and wave parameters (height, period) is established, providing an empirical model for SAB-beach profiles. These findings enhance the understanding of SAB-beach systems and offer valuable insights for coastal protection and disaster prevention in engineering applications. |
| format | Article |
| id | doaj-art-be0b9d4a59f745adbe7ee73372e411df |
| institution | Kabale University |
| issn | 2296-7745 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj-art-be0b9d4a59f745adbe7ee73372e411df2025-01-16T05:10:16ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-01-011110.3389/fmars.2024.15309041530904Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves conditionWenliang Zhang0Junli Guo1Lianqiang Shi2Zhuocheng Liu3Qinghua Ye4Cuiping Kuang5Yu Peng6Huangzhe Qi7Second Institute of Oceanography, MNR, Hangzhou, ChinaSecond Institute of Oceanography, MNR, Hangzhou, ChinaSecond Institute of Oceanography, MNR, Hangzhou, ChinaSchool of Geography and Marine Science, Nanjing University, Nanjing, ChinaDeltares, Delft, NetherlandsCollege of Civil Engineering, Tongji University, Shanghai, ChinaMarine Science and Technology College, Zhejiang Ocean University, Zhoushan, ChinaSecond Institute of Oceanography, MNR, Hangzhou, ChinaSubmerged artificial sandbars (SABs) are increasingly favored as an efficient method for beach nourishment, helping to mitigate beach erosion and maintain the sediment transport budget, thus promoting ecological stability. A comprehensive understanding of the morphodynamical evolution of the submerged artificial sandbar-beach profile is essential. This study employs a scaled-down moving-bed flume test to examine the dynamic geomorphological evolution of the submerged artificial sandbar-beach system under regular wave conditions. Twenty experiments, each with different wave heights and periods representative of the Zhejiang coast, were conducted. The study investigated the profile evolution and wave parameters of the submerged artificial sandbar-beach model. The results reveal low wave reflection in front of the sandbar, indicating that under the tested wave conditions, the sandbar primarily serves as a sediment source rather than effectively reflecting wave energy. In all scenarios, the top of the sandbar migrates shoreward, and the sandbar’s contour shape becomes asymmetric. For smaller wave periods, localized erosion occurs in the troughs, while larger periods result in complete siltation. Continuous sediment transport into the trough characterizes the beach face, with sediment movement controlled by wave height and period. A linear or nonlinear relationship between sandbar erosion depth, beach slope, and wave parameters (height, period) is established, providing an empirical model for SAB-beach profiles. These findings enhance the understanding of SAB-beach systems and offer valuable insights for coastal protection and disaster prevention in engineering applications.https://www.frontiersin.org/articles/10.3389/fmars.2024.1530904/fullsubmerged artificial sandbarregular waveflume testsandbar-beach profile evolutionbeach nourishment |
| spellingShingle | Wenliang Zhang Junli Guo Lianqiang Shi Zhuocheng Liu Qinghua Ye Cuiping Kuang Yu Peng Huangzhe Qi Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition Frontiers in Marine Science submerged artificial sandbar regular wave flume test sandbar-beach profile evolution beach nourishment |
| title | Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition |
| title_full | Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition |
| title_fullStr | Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition |
| title_full_unstemmed | Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition |
| title_short | Experimental study on the evolution of submerged artificial sandbar-beach profile under the regular waves condition |
| title_sort | experimental study on the evolution of submerged artificial sandbar beach profile under the regular waves condition |
| topic | submerged artificial sandbar regular wave flume test sandbar-beach profile evolution beach nourishment |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1530904/full |
| work_keys_str_mv | AT wenliangzhang experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT junliguo experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT lianqiangshi experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT zhuochengliu experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT qinghuaye experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT cuipingkuang experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT yupeng experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition AT huangzheqi experimentalstudyontheevolutionofsubmergedartificialsandbarbeachprofileundertheregularwavescondition |