Analysis of hydrodynamic and suspended sediment characteristics in Oujiang estuary
YAO Yanming
WANG Jiachen
LI Li
Abstract：As a key area of land-sea interaction,flow and sediment play an important role in material transport in the estuary.Based on the multi-time-space measured hydrology and suspended sediment data of the Oujiang estuary,the characteristics of tidal current and suspended sediment were analyzed,and the harmonic analysis method was used to the quantitative separation of suspended sediment con-centration(SSC).The results showed that the SSC was mainly controlled by the resuspension effect during the observation period,and the residual flow and suspended sediment flux were seaward trans-port.The temporal and spatial variation of bed shear stress was one of the main dynamic mechanisms of the'lag effect'of suspended sediment,which showed that the phase of suspended sediment lagged behind the phase of flow velocity for about 2 h,resulting in the peak values of SSC at the slack times.
Keywords：Oujiang estuaryharmonic analysisSSCsediment transport
Publication Date：2025-08-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 35-43 )