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Effect of Sediment Load Boundary Conditions in Predicting Sediment Delta of Tarbela Reservoir in Pakistan
Tarar, Zeeshan Riaz1; Ahmad, Sajid Rashid1; Ahmad, Iftikhar1; ul Hasson, Shabeh2,3; Khan, Zahid Mahmood4; Washakh, Rana Muhammad Ali5,6; Ateeq-Ur-Rehman, Sardar4,7; Minh Duc Bui7
Corresponding AuthorAteeq-Ur-Rehman, Sardar(sardar.ateeq@tum.de)
2019-08-01
Source PublicationWATER
EISSN2073-4441
Volume11Issue:8Pages:20
SubtypeArticle
AbstractSetting precise sediment load boundary conditions plays a central role in robust modeling of sedimentation in reservoirs. In the presented study, we modeled sediment transport in Tarbela Reservoir using sediment rating curves (SRC) and wavelet artificial neural networks (WA-ANNs) for setting sediment load boundary conditions in the HEC-RAS 1D numerical model. The reconstruction performance of SRC for finding the missing sediment sampling data was at R-2 = 0.655 and NSE = 0.635. The same performance using WA-ANNs was at R-2 = 0.771 and NSE = 0.771. As the WA-ANNs have better ability to model non-linear sediment transport behavior in the Upper Indus River, the reconstructed missing suspended sediment load data were more accurate. Therefore, using more accurately-reconstructed sediment load boundary conditions in HEC-RAS, the model was better morphodynamically calibrated with R-2 = 0.980 and NSE = 0.979. Using SRC-based sediment load boundary conditions, the HEC-RAS model was calibrated with R-2 = 0.959 and NSE = 0.943. Both models validated the delta movement in the Tarbela Reservoir with R-2 = 0.968, NSE = 0.959 and R-2 = 0.950, NSE = 0.893 using WA-ANN and SRC estimates, respectively. Unlike SRC, WA-ANN-based boundary conditions provided stable simulations in HEC-RAS. In addition, WA-ANN-predicted sediment load also suggested a decrease in supply of sediment significantly to the Tarbela Reservoir in the future due to intra-annual shifting of flows from summer to pre- and post-winter. Therefore, our future predictions also suggested the stability of the sediment delta. As the WA-ANN-based sediment load boundary conditions precisely represented the physics of sediment transport, the modeling concept could very likely be used to study bed level changes in reservoirs/rivers elsewhere in the world.
KeywordUpper Indus Basin (UIB) Tarbela Reservoir Besham Qila sediment modeling uncertainty wavelet transform analysis-artificial neural network (WA-ANN) sediment rating curve (SRC) HEC-RAS
DOI10.3390/w11081716
Indexed BySCI
Language英语
Quartile3区
Funding ProjectDeutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the Cluster of Excellence CliSAP'[EXC177] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy -EXC 2037 CLICCS - Climate, Climatic Change, and Society'[390683824]
TOP
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000484561500189
Funding OrganizationDeutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the Cluster of Excellence CliSAP' ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy -EXC 2037 CLICCS - Climate, Climatic Change, and Society'
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/27158
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorAteeq-Ur-Rehman, Sardar
Affiliation1.Univ Punjab, CEES, Punjab 54590, Pakistan
2.Univ Hamburg, Inst Geog, CEN, D-20148 Hamburg, Germany
3.Inst Space Technol, Dept Space Sci, Islamabad 44000, Pakistan
4.BZ Univ, Dept Agr Engn, Multan 60800, Pakistan
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Tech Univ Munich, Chair Hydraul & Water Resources Engn, -80333 Munich, Germany
Recommended Citation
GB/T 7714
Tarar, Zeeshan Riaz,Ahmad, Sajid Rashid,Ahmad, Iftikhar,et al. Effect of Sediment Load Boundary Conditions in Predicting Sediment Delta of Tarbela Reservoir in Pakistan[J]. WATER,2019,11(8):20.
APA Tarar, Zeeshan Riaz.,Ahmad, Sajid Rashid.,Ahmad, Iftikhar.,ul Hasson, Shabeh.,Khan, Zahid Mahmood.,...&Minh Duc Bui.(2019).Effect of Sediment Load Boundary Conditions in Predicting Sediment Delta of Tarbela Reservoir in Pakistan.WATER,11(8),20.
MLA Tarar, Zeeshan Riaz,et al."Effect of Sediment Load Boundary Conditions in Predicting Sediment Delta of Tarbela Reservoir in Pakistan".WATER 11.8(2019):20.
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