| 莱州湾悬沙输运机制研究 |
| |
| 引用本文： | 陈斌,刘健,高飞.莱州湾悬沙输运机制研究[J].水科学进展,2015,26(6):857-866. |
| |
| 作者姓名： | 陈斌 刘健 高飞 |
| |
| 作者单位： | 1.国土资源部海洋油气资源与环境地质重点实验室, 山东青岛 266071; |
| |
| 基金项目： | 国家自然科学基金资助项目(41330964);中国地质调查局专项资助项目(1212011120172) |
| |
| 摘 要： | 基于2012年实测的潮流、含沙量及表层沉积物数据及资料等,分析了潮流、余流、潮流底应力及底质类型对含沙量变化的影响,并运用物质通量分析方法,探讨了莱州湾悬浮泥沙的输运机制.研究结果表明:研究海域受半日潮控制呈往复流特征,涨、落潮期间近底含沙量与流速及潮流底应力显著相关,存在明显的再悬浮现象,含沙量呈现潮周期变化特征;底质类型与含沙量大小密切相关,细颗粒物质更容易发生悬浮;平流输运与潮泵效应是莱州湾海域的悬沙输运的主要动力因素.
|
| 关 键 词： | 潮流 余流 底应力 含沙量 再悬浮 |
| 收稿时间： | 2015-05-14 |
Suspended sediment transport mechanism in Laizhou Bay |
| |
| CHEN Bin,LIU Jian,GAO Fei.Suspended sediment transport mechanism in Laizhou Bay[J].Advances in Water Science,2015,26(6):857-866. |
| |
| Authors: | CHEN Bin LIU Jian GAO Fei |
| |
| Affiliation: | 1.Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China;2.Qingdao Institute of Marine Geology, Qingdao 266071, China |
| |
| Abstract: | Based on the measured data and information about tidal current velocity, suspended sediment concentration (SSC), and surface sediments in the Laizhou Bay, the effects of tidal current, residual current, tidal bottom stress, and bottom sediment type on SSC variation were analyzed. The mechanism of suspended sediment transport is also addressed by using material flux analysis. The results show that: ① The sea area of study was controlled by semidiurnal tides and characterized by rectilinear current and the SSC exhibited cyclic tidal change, with the near-bottom SSC being significantly correlated with tidal current velocity and with tidal bottom stress during the flood and ebb stages, which indicates strong re-suspension; ② The type of bottom sediment is closely related with SSC value, and fine-grained material is more prone to suspension; and ③ Slack water transport and tidal pumping effects are the main dynamic factors contributing to suspended sediment transport in the Laizhou Bay area. |
| |
| Keywords: | tidal current residual current bottom stress suspended sediment concentration re-suspension |
|
| 点击此处可从《水科学进展》浏览原始摘要信息 |
|
点击此处可从《水科学进展》下载全文 |
|
