Prediction of daily sediment discharge using a back propagation neural network training algorithm: A case study of the Narmada River, India

被引:39
作者
Bisoyi, Nibedita [1 ]
Gupta, Harish [2 ]
Padhy, Narayan Prasad [3 ]
Chakrapani, Govind Joseph [4 ]
机构
[1] Coll Engn Roorkee, Dept Humanities & Sci, Roorkee, Uttar Pradesh, India
[2] Osmania Univ, Univ Coll Engn, Dept Civil Engn, Hyderabad, Telangana, India
[3] Indian Inst Technol Roorkee, Dept Elect Engn, Roorkee, Uttar Pradesh, India
[4] Indian Inst Technol Roorkee, Dept Earth Sci, Roorkee, Uttar Pradesh, India
关键词
Artificial neural network; Back propagation; Sediment discharge; Prediction; Error; Narmada River; SPATIAL VARIATIONS; MONSOON FLOODS; WATER-FLOW; RUNOFF; LOAD; MODELS; BASIN;
D O I
10.1016/j.ijsrc.2018.10.010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Most of the studies on Artificial Neural Network (ANN) models remain restricted to smaller rivers and catchments. In this paper, an attempt has been made to correlate variability of sediment loads with rainfall and runoff through the application of the Back Propagation Neural Network (BPNN) algorithm for a large tropical river. The algorithm and simulation are done through MATLAB environment. The methodology comprised of a collection of data on rainfall, water discharge, and sediment discharge for the Narmada River at various locations (along with time variables) and application to develop a three-layer BPNN model for the prediction of sediment discharges. For training and validation purposes a set of 549 data points for the monsoon (16 June-15 November) period of three consecutive years (1996-1998) was used. For testing purposes, the BPNN model was further trained using a set of 732 data points of monsoon season of four years (2006-07 to 2009-10) at nine stations. The model was tested by predicting daily sediment load for the monsoon season of the year 2010-11. To evaluate the performance of the BPNN model, errors were calculated by comparing the actual and predicted loads. The validation and testing results obtained at all these locations are tabulated and discussed. Results obtained from the model application are robust and encouraging not only for the sub-basins but also for the entire basin. These results suggest that the proposed model is capable of predicting the daily sediment load even at downstream locations, which show nonlinearity in the transportation process. Overall, the proposed model with further training might be useful in the prediction of sediment discharges for large river basins. (C) 2018 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:125 / 135
页数:11
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