| Effects of suspended culture of the seaweed Laminaria japonica aresch on the flow structure and sedimentation processes | |
Zhang Zehua1,2 ; Huang Haijun1; Liu Yanxia1; Yan Liwen1; Bi Haibo1
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| 2016-08-01 | |
| 发表期刊 | JOURNAL OF OCEAN UNIVERSITY OF CHINA
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| 卷号 | 15期号:4页码:643-654 |
| 文章类型 | Article |
| 摘要 | The culture of suspended kelp, such as Laminaria japonica Aresch, has arisen in nearshore areas for approximately 30 years since the 1980s. This long-term activity has significant impact on the regional hydrodynamic and sedimentary environments. In this study the impact was investigated, based on synchronized multi-station data from continuous observations made within and around the culture area. In total, three current velocity profiles were identified inside and on the landward side of the culture area. Based on the current velocity profiles we calculated the boundary layer parameters, the fluxes of erosion/deposition, and the rate of sediment transport in different times at each observation site. Comparison between culture and non-culture periods showed that the presence of suspended kelp caused the reduction in the average flow velocity by approximately 49.5%, the bottom friction velocity by 24.8%, the seabed roughness length by 62.7%, and the shear stress and the flux of resuspended sediment by approximately 50%. From analyses in combination with the corresponding vertical variation of the suspended sediment distribution, it is revealed that the lifted sediments by resuspension is mixed with the upper suspended material, which will modify the regional distribution of suspended sediment. These changes in flow structure and sediment movement will accelerate seabed siltation, which corresponds to the changes in seabed erosion/deposition. However, under the influences of the seasonal changes in kelp growth the magnitude of change with the seabed siltation was not obvious inside the culture area, but a fundamental change was apparent around the culture area. |
| 关键词 | Kelps Suspended Culture Velocity Profiles Sedimentation Processes Heini Bay |
| DOI | 10.1007/s11802-016-2994-9 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000379536300010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/130951 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Zhang Zehua,Huang Haijun,Liu Yanxia,et al. Effects of suspended culture of the seaweed Laminaria japonica aresch on the flow structure and sedimentation processes[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2016,15(4):643-654. |
| APA | Zhang Zehua,Huang Haijun,Liu Yanxia,Yan Liwen,&Bi Haibo.(2016).Effects of suspended culture of the seaweed Laminaria japonica aresch on the flow structure and sedimentation processes.JOURNAL OF OCEAN UNIVERSITY OF CHINA,15(4),643-654. |
| MLA | Zhang Zehua,et al."Effects of suspended culture of the seaweed Laminaria japonica aresch on the flow structure and sedimentation processes".JOURNAL OF OCEAN UNIVERSITY OF CHINA 15.4(2016):643-654. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Effects of suspended（1002KB） | 期刊论文 | 作者接受稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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