Abstract
ABSTRACT Salinity intrusion, as one of the main coastal hazards, has a significant influence to the Yangtze Estuary. To describe the characteristics of salt intrusion, the modified ECOMSED is applied to establish a three dimensional baroclinic salinity transport model. An approach to represent a moving boundary is introduced and the improved model is validated through the observed field data of tidal height, current and salinity distribution. Since the saline intrusion is mainly affected by the upstream discharge and out sea tidal ranges, several combinations of discharge and tidal ranges conditions have been carried out to discuss the impact of saline intrusion due to the South-to-North Water Transfer Project in the dry seasons. Based on the simulation result, the salinity intrusion under different computational conditions is discussed.
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