Relation between sediment carrying capacity and runoff/tidal dynamic in Yangtze Estuary
Considering of the common influence of runoff and tidal dynamics,the optimized formula of sediment carrying capacity in Yangtze estuary is established.And the influences of runoff dynamic and tidal dynamic on the sediment carrying capacity are discussed separately.It is found that the concentration of suspended sediment in wet season is bigger than that in dry season with the same velocity of flood and ebb tide.The estimate accuracy of sediment carrying capacity would be improved when the parameter between runoff and tide is bought in.Combined the sediment carrying capacity in different seasons,the ability of sediment carrying of water flow in estuary could be described correctly.The increase of tidal dynamic increase the sediment carrying capacity when the runoff dynamic is constant and the increase of runoff dynamic increase the sediment carrying capacity of upstream reach of Xuliujing and decrease the sediment carrying capacity of downstream reach.The sediment carrying capacity in estuary is determinate by comparison of runoffand tidal dynamics.
Yangtze estuary, sediment carrying capacity, runoff and tide, dynamic relation
NETL
NSTL
万方数据
维普
