Results 141 to 150 of about 272 (160)

Salinity Time Series Prediction and Forecasting Using Dynamic Neural Networks in the Qiantang River Estuary [PDF]

open access: yesAdvanced Science Letters, 2012
The early warning of saltwater intrusion is an important work for ensuring the drinking water supplies. To forecast and predict the daily maximum salinity for the water withdrawn for the waterworks located along the Qiantang River, the nonlinear autoregressive networks with exogenous inputs (NARX) model was applied.
Xingguo Yang   +2 more
openaire   +2 more sources

Effect of large-scale reservoir and river regulation/reclamation on saltwater intrusion in Qiantang Estuary

Science in China Series B: Chemistry, 2001
By using field salinity data recorded in the Qiantang Estuary for the nearly forty years (which covers the periods before and after the erection of a large-scale reservoir in the watershed and river regulation/reclamation in the estuary) and one-dimensional salt water intrusion modeling, it is shown that the salt water intrusion decreases caused by ...
Zengcui Han   +3 more
openaire   +1 more source

Impact of human activity on the estuary of the Qiantang River and the reclamation of tidal flats and river regulation

Environmental Geology, 2005
The swing of the main channel of the Qiantang River is controlled by the high-water and low-water changes in the river, as well as the impact of large-scale reclamation of tidal flats. Its evolution in modern times is the result of the combined functions of natural and man-made factors.
Li-Hua Feng, Yi-Xin Bao
openaire   +1 more source

Prediction of Salinity in Qiantang Estuary Based on Wavelet Neural Network Optimized by Particle Swarm Optimization

Applied Mechanics and Materials, 2013
Saltwater intrusion is a serious problem for most of macro-tidal estuaries, especially when it happened at the downstream region of drinking water sources. Therefore, accurate prediction of salinity variation becomes absolutely necessary. A three-layer salinity prediction model is established in this paper, based on wavelet neural network (WNN ...
Guang Hui Li, Zhi Lin Sun, Shi Xiang Hu
openaire   +1 more source

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