ANALYSIS OF HYDRODYNAMIC CHARACTERISTICS AND ESTUARINE DYNAMIC PROCESS OF THE DONGJING RIVER DELTA BASED ON 1-D NUMERICAL MODEL
The Dongjiang River Delta lies in the eastern part of the whole Pear River Delta, Guangdong Province, China. In this paper, based on the 1-D numerical model and measured data, a study on the characteristics of tide, the suspended sediment transport during the flood and drought of the Dongjiang River Delta is made. Based on the Three Steps Methods and Junction Control Method for suspended sediment, the 1-D networks numerical model for simulating unsteady flow and suspended-sediment transport in river networks was presented. The calculated results were calibrated with the hydrological data synchronously measured in the Pearl River networks in Feb. 2001 and July 2003. A good agreement of the calculated results with the measured data shows that the model could be used to describe the hydrodynamic and suspended sediment process of these regions. Based on this numerical model, this paper provides a brief analysis of the characteristics of tide, the suspended sediment transport during the flood and drought of the Dongjiang river networks. Result shows that during the dry and flood season, characteristics of flow, sediment discharge tide are similar: the velocity, discharge and sediment concentration during flood tides is bigger than that during ebb tides, while time of the ebb current is longer than that of the flood current.
Dongjiang River Delta dynamic process river networks
Wei Zhang Ling Li Xue Dong
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University, Nanjin College of Ocean, Hohai University
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1151-1156
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）