Temporal and Spatial Distribution Characteristics of Suspended Sediment Distribution in the Lingding Bay, South China

摘要

Large scale hydrological observations in the Pear River Estuary havebeen respectively carried out in July, 2003. Based on these data,characteristics of temporal and spatial variation of suspended sedimentconcentration in the Lingding Bay are studied. The research resultshows that suspended sediment concentration changes with thevariation of tide current and runoff; the sediment resuspension oftenoccurs 1~2 hour later at tidal flood or ebb strength. The turbiditymaximum appears close to the gauging station 0303. The mechanism oflongitudinal suspended sediment transport shows that the main factorsof sediment transportation in Lingding Bay are Lagrange sedimenttransportation, tide trapping sediment transportation, and vertical netcirculation sediment transportation.