Study on the changing characteristics and the prediction of annual sediment transport at Beibei station of Jialin River
Sheng Huang · Journal of Sediment Research · 2008
The changing characteristics of annual sediment transport at Beibei station is firstly researched by using wavelet transform in this paper.The results show that the annual sediment transport decreased clearly with time.Based on Back Propagation network and wavelet transform,a wavelet network model is then developed to predict the annual sediment transport at Beibei station.The forecast result by this model is compared with the result by BP network model.The comparison demonstrates that the predicted annual sediment by the wavelet network model is better than that by BP network model if only annual runoff and sediment data are available.So the wavelet network model can forecast not only the tendency of the annual sediment transport,but also the quantity.The new model provides a new way to predict the annual sediment transport under the condition of not having sufficient data.