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Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action
Coastal Engineering, Volume: 199, Start page: 104739
Swansea University Authors:
KRISTIAN IONS, Xin Wang, Dominic Reeve , Harshinie Karunarathna
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DOI (Published version): 10.1016/j.coastaleng.2025.104739
Abstract
A series of experiments were carried out in a laboratory wave flume to investigate the impact of coastal rigid vegetation on suspended sediment transport and the generation of bedforms for a range of wave conditions for both submerged and emerged vegetations. Rigid arrays of cylindrical wooden dowel...
Published in: | Coastal Engineering |
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ISSN: | 0378-3839 1872-7379 |
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Elsevier BV
2025
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URI: | https://cronfa.swan.ac.uk/Record/cronfa69034 |
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Rigid arrays of cylindrical wooden dowels were used as vegetation mimics on a sandy bed. Two vegetation densities were selected, representing dense and sparse vegetation meadows. Synchronised flow velocity and suspended sediment concentration measurements were performed using particle image velocimetry and an acoustic backscatter sensor. Seabed ripples were observed in all cases where the near-bed velocity exceeded the threshold of sediment motion. The near-bed velocity governed sediment suspension on both bare and vegetated sediment seabeds. Near-bed sediment concentration on densely vegetated seabeds was lower than that of bare seabeds under the same wave conditions. These observations highlight the importance of considering the role of vegetation in shaping seabed morphology and the resultant suspended sediment concentrations. 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2025-03-14T15:17:50.1993041 v2 69034 2025-03-05 Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action 0eaeea3a999ce1ef38ade9b3b5f26a22 KRISTIAN IONS KRISTIAN IONS true false b0ce4aa1ac181e0ccc3388ce3641111b Xin Wang Xin Wang true false 3e76fcc2bb3cde4ddee2c8edfd2f0082 0000-0003-1293-4743 Dominic Reeve Dominic Reeve true false 0d3d327a240d49b53c78e02b7c00e625 0000-0002-9087-3811 Harshinie Karunarathna Harshinie Karunarathna true false 2025-03-05 A series of experiments were carried out in a laboratory wave flume to investigate the impact of coastal rigid vegetation on suspended sediment transport and the generation of bedforms for a range of wave conditions for both submerged and emerged vegetations. Rigid arrays of cylindrical wooden dowels were used as vegetation mimics on a sandy bed. Two vegetation densities were selected, representing dense and sparse vegetation meadows. Synchronised flow velocity and suspended sediment concentration measurements were performed using particle image velocimetry and an acoustic backscatter sensor. Seabed ripples were observed in all cases where the near-bed velocity exceeded the threshold of sediment motion. The near-bed velocity governed sediment suspension on both bare and vegetated sediment seabeds. Near-bed sediment concentration on densely vegetated seabeds was lower than that of bare seabeds under the same wave conditions. These observations highlight the importance of considering the role of vegetation in shaping seabed morphology and the resultant suspended sediment concentrations. Then, the near-bed sediment concentration formulae used on bare sediment beds are validated for use on vegetated seabeds. Journal Article Coastal Engineering 199 104739 Elsevier BV 0378-3839 1872-7379 15 6 2025 2025-06-15 10.1016/j.coastaleng.2025.104739 COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) This research is supported by the Engineering and Physical Sciences Research Council (EPSRC) UK Doctoral Training Partnership of Swansea University (EP/T517987/1) grant. We would like to thank Dr. J.M. Horrillo-Caraballo for the assistance during the experiments. XW acknowledges Leverhulme Trust Research Grant RPG-2023-235. We also extend thanks to The Great British Sasakawa Foundation grant No. 6365 and the Disaster Prevention Research Institute (DPRI) of Kyoto University International Collaborative Research Grant 2023IG-02 for facilitating research collaboration between Swansea University and DPRI. NM is also supported by JICA/JST SATREPS Program (JPMJSA2110). 2025-03-14T15:17:50.1993041 2025-03-05T11:04:33.7117418 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering KRISTIAN IONS 1 Xin Wang 2 Dominic Reeve 0000-0003-1293-4743 3 N. Mori 4 Harshinie Karunarathna 0000-0002-9087-3811 5 69034__33820__fff911db717d4d638f0964527277ceb0.pdf 69034.VOR.pdf 2025-03-14T15:15:39.7005313 Output 8197795 application/pdf Version of Record true © 2025 The Authors. This is an open access article distributed under the terms of the Creative Commons CC-BY license. true eng http://creativecommons.org/licenses/by/4.0/ |
title |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
spellingShingle |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action KRISTIAN IONS Xin Wang Dominic Reeve Harshinie Karunarathna |
title_short |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
title_full |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
title_fullStr |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
title_full_unstemmed |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
title_sort |
Submerged and Emerged Rigid Vegetation Impact on Bedforms and Sediment Suspension under Wave Action |
author_id_str_mv |
0eaeea3a999ce1ef38ade9b3b5f26a22 b0ce4aa1ac181e0ccc3388ce3641111b 3e76fcc2bb3cde4ddee2c8edfd2f0082 0d3d327a240d49b53c78e02b7c00e625 |
author_id_fullname_str_mv |
0eaeea3a999ce1ef38ade9b3b5f26a22_***_KRISTIAN IONS b0ce4aa1ac181e0ccc3388ce3641111b_***_Xin Wang 3e76fcc2bb3cde4ddee2c8edfd2f0082_***_Dominic Reeve 0d3d327a240d49b53c78e02b7c00e625_***_Harshinie Karunarathna |
author |
KRISTIAN IONS Xin Wang Dominic Reeve Harshinie Karunarathna |
author2 |
KRISTIAN IONS Xin Wang Dominic Reeve N. Mori Harshinie Karunarathna |
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Coastal Engineering |
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A series of experiments were carried out in a laboratory wave flume to investigate the impact of coastal rigid vegetation on suspended sediment transport and the generation of bedforms for a range of wave conditions for both submerged and emerged vegetations. Rigid arrays of cylindrical wooden dowels were used as vegetation mimics on a sandy bed. Two vegetation densities were selected, representing dense and sparse vegetation meadows. Synchronised flow velocity and suspended sediment concentration measurements were performed using particle image velocimetry and an acoustic backscatter sensor. Seabed ripples were observed in all cases where the near-bed velocity exceeded the threshold of sediment motion. The near-bed velocity governed sediment suspension on both bare and vegetated sediment seabeds. Near-bed sediment concentration on densely vegetated seabeds was lower than that of bare seabeds under the same wave conditions. These observations highlight the importance of considering the role of vegetation in shaping seabed morphology and the resultant suspended sediment concentrations. Then, the near-bed sediment concentration formulae used on bare sediment beds are validated for use on vegetated seabeds. |
published_date |
2025-06-15T08:22:23Z |
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11.054383 |