Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef
For observation on the influence mechanism of environmentally and aesthetically friendly artificial submerged sand bars and reefs in a process-based way, a set of experiments was conducted in a 50 m-long flume to reproduce the cross-shore beach morphodynamic process under four irregular wave conditi...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-12-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/8/12/1019 |
| _version_ | 1797544845764460544 |
|---|---|
| author | Cuiping Kuang Yue Ma Xuejian Han Shunqi Pan Lei Zhu |
| author_facet | Cuiping Kuang Yue Ma Xuejian Han Shunqi Pan Lei Zhu |
| author_sort | Cuiping Kuang |
| collection | DOAJ |
| description | For observation on the influence mechanism of environmentally and aesthetically friendly artificial submerged sand bars and reefs in a process-based way, a set of experiments was conducted in a 50 m-long flume to reproduce the cross-shore beach morphodynamic process under four irregular wave conditions. The beach behavior is characterized by the scarp (indicating erosion) and the breaker bar (indicating deposition), respectively, and the scarp location can be formulated as a linear equation regarding the natural exponential of the duration time. Overall, main conclusions are: (1) the cross-shore structure of significant wave height and set-up is mainly determined by the artificial reef (AR); (2) the cross-shore distribution of wave skewness, asymmetry, and undertow (indicating shoaling and breaking) is more affected by the artificial submerged sand bar (ASB); (3) the ASB deforms and loses its sand as it attenuates incident waves, which leads to a complex sediment transport pattern; (4) the scarp retreat is related to the beach state, which can be changed by the AR and the ASB; (5) the AR, the ASB, and their combination decrease wave attack on the beach. In conclusion, this study proves positive effects of the AR and the ASB in beach protection through their process-based influences on beach behaviors and beach states for erosive waves. |
| first_indexed | 2024-03-10T14:06:18Z |
| format | Article |
| id | doaj.art-dbb990cc659e4a348f65bd87b9a57253 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T14:06:18Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-dbb990cc659e4a348f65bd87b9a572532023-11-21T00:37:48ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-12-01812101910.3390/jmse8121019Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and ReefCuiping Kuang0Yue Ma1Xuejian Han2Shunqi Pan3Lei Zhu4College of Civil Engineering, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaHydro-Environmental Research Centre, School of Engineering, Cardiff University, Cardiff CF24 3AA, UKThe Eighth Geological Brigade, Hebei Geological Prospecting Bureau, Qinhuangdao 066001, ChinaFor observation on the influence mechanism of environmentally and aesthetically friendly artificial submerged sand bars and reefs in a process-based way, a set of experiments was conducted in a 50 m-long flume to reproduce the cross-shore beach morphodynamic process under four irregular wave conditions. The beach behavior is characterized by the scarp (indicating erosion) and the breaker bar (indicating deposition), respectively, and the scarp location can be formulated as a linear equation regarding the natural exponential of the duration time. Overall, main conclusions are: (1) the cross-shore structure of significant wave height and set-up is mainly determined by the artificial reef (AR); (2) the cross-shore distribution of wave skewness, asymmetry, and undertow (indicating shoaling and breaking) is more affected by the artificial submerged sand bar (ASB); (3) the ASB deforms and loses its sand as it attenuates incident waves, which leads to a complex sediment transport pattern; (4) the scarp retreat is related to the beach state, which can be changed by the AR and the ASB; (5) the AR, the ASB, and their combination decrease wave attack on the beach. In conclusion, this study proves positive effects of the AR and the ASB in beach protection through their process-based influences on beach behaviors and beach states for erosive waves.https://www.mdpi.com/2077-1312/8/12/1019beach nourishmentshoreface nourishmentartificial reefartificial submerged sand bar |
| spellingShingle | Cuiping Kuang Yue Ma Xuejian Han Shunqi Pan Lei Zhu Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef Journal of Marine Science and Engineering beach nourishment shoreface nourishment artificial reef artificial submerged sand bar |
| title | Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef |
| title_full | Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef |
| title_fullStr | Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef |
| title_full_unstemmed | Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef |
| title_short | Experimental Observation on Beach Evolution Process with Presence of Artificial Submerged Sand Bar and Reef |
| title_sort | experimental observation on beach evolution process with presence of artificial submerged sand bar and reef |
| topic | beach nourishment shoreface nourishment artificial reef artificial submerged sand bar |
| url | https://www.mdpi.com/2077-1312/8/12/1019 |
| work_keys_str_mv | AT cuipingkuang experimentalobservationonbeachevolutionprocesswithpresenceofartificialsubmergedsandbarandreef AT yuema experimentalobservationonbeachevolutionprocesswithpresenceofartificialsubmergedsandbarandreef AT xuejianhan experimentalobservationonbeachevolutionprocesswithpresenceofartificialsubmergedsandbarandreef AT shunqipan experimentalobservationonbeachevolutionprocesswithpresenceofartificialsubmergedsandbarandreef AT leizhu experimentalobservationonbeachevolutionprocesswithpresenceofartificialsubmergedsandbarandreef |