标题：Optical Monitoring Study on Estuarine Sediment Incipient Under Marine Hydrodynamic
作者：Qin Hao; Li Shucai; Zhang Lei
作者机构：[Qin Hao; Li Shucai] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250061, Shandong, Peoples R China.; [Zhang Lei] Natl Univ Singapore, Singap 更多
会议名称：4th International Conference on Advances in Experimental Mechanics
会议日期：NOV 18-20, 2009
来源：FOURTH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS
关键词：Yellow Rive Delta; hydrodynamic; sediment incipient; turbidity
摘要：For the deserted estuary without sediment inflow, ocean hydrodynamic has become the main force for coastal erosion. This paper utilizes wave-tide gauge and current meter to monitor the hydrodynamic within the experimental area and also, turbidity meter is used to conduct indirect monitoring to the sediment concentration (the corresponding relation between the turbidity value and the content of suspended particles in the water is pre-calibrated indoors). Statistical means is adopted to calculate the correlativity between the turbidity and hydropower factors, such as wave height, tide height and flow meter which are determined on site and then the determining factors for sediment incipient are obtained. The conclusion is that the eddy and turbulent flow caused by broken wave constitute the main dynamic factors for the sediment incipient and the incipient velocity mainly comes from the flow rate of the eddy and turbulence resulting from the broken wave.