A process-based approach to sediment transport in the Yangtze estuary

A process-based model for the Yangtze Estuary is constructed to study the sediment transport in the estuary. The proposed model covers the entire tidal region of the estuary, the Hangzhou Bay and a large part of the adjacent sea. The dominant processes, fluvial and tidal, are included in the model. The calibration of the model against extensive flow, water level, salinity and suspended sediment data shows a good representation of observed phenomena. With the present calibrated and validated model, the residual flow field and the residual sediment transport field are obtained. The residual sediment transport pattern gives insight into the morphological behaviour of the mouth bars.

[1]  Yizhong Chen,et al.  Quantitative relationship of runoff and tide to saltwater spilling over from the North Branch in the Changjiang Estuary: A numerical study , 2006 .

[2]  G. Stelling,et al.  Development and validation of a three-dimensional morphological model , 2004 .

[3]  Jing Zhang,et al.  Impact of dams on Yangtze River sediment supply to the sea and delta intertidal wetland response , 2005 .

[4]  Ding Ping-xing.  Numerical simulation of total sediment under waves and currents in the Changjiang Estuary , 2003 .

[5]  Job Dronkers.  Dynamics Of Coastal Systems , 2005 .

[6]  L. Rijn.  General view on sand transport by currents and waves: Data analysis and engineering modelling for uniform and graded sand (TRANSPOR 2000 and CROSMOR 2000 models) , 2000 .

[7]  Emmanuel Partheniades,et al.  Erosion and Deposition of Cohesive Soils , 1965 .

[8]  Shi-lun Yang,et al.  A 2D/3D hydrodynamic and sediment transport model for the Yangtze Estuary, China , 2009 .

[9]  B. Latteux,et al.  Approaches to long-term modelling of coastal morphology : A review , 1993 .

[10]  P. Ridd,et al.  Long-term morphodynamic evolution and the equilibrium mechanism of a flood channel in the Yangtze Estuary (China) , 2008 .

[11]  L. Rijn.  Unified view of sediment transport by currents and waves. I: Initiation of motion, bed roughness, and bed-load transport , 2007 .

[12]  J. Roelvink,et al.  Design and development of DELFT3D and application to coastal morphodynamics , 1995 .

[13]  John Z. Shi,et al.  Cross-shore variations in morphodynamic processes of an open-coast mudflat in the Changjiang Delta, China: With an emphasis on storm impacts , 2006 .

[14]  Yu Zhi-ying.  The evolvement characteristics of Nanhuizui foreland in the Changjiang Estuary, China , 2004 .

[15]  Leo C. van Rijn,et al.  Unified View of Sediment Transport by Currents and Waves. II: Suspended Transport , 2007 .

[16]  D. Walstra,et al.  Unified View of Sediment Transport by Currents and Waves. IV: Application of Morphodynamic Model , 2007 .

[17]  Huang Qing-hui.  GIS supporting study on calculation of the amount of siltation and erosion in mouth bars of the Changjiang Estuary , 2002 .