Study on Tidal Level Forecasting and Real-time Correction Model for Yangtze River Estuary

The variation regularity of tidal level in Yangtze River estuary was analyzed,and a tidal forecasting model was established by harmonic analysis.Tidal levels of past several years were calculated by the model,and calculation errors were analyzed.A real-time correction model regarded upstream discharge as input was presented.The tidal forecasting model can forecast tidal level long before it actually happens,and the real-time correction model can correct the forecasted level according to real-time upstream discharge,it will provide a beneficial reference for similar estuaries.