The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed
The aim of this study is to model a relationship between the amount of the suspended sediment load by considering the physiographic characteristics of the Lake Urmia watershed. For this purpose, the information from different stations was used to develop the sediment estimation models. Ten physiogra...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-04-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/87/7/1791 |
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| author | Niloofar Nejatian Mohsen Yavary Nia Hooshyar Yousefyani Fatemeh Shacheri Melika Yavari Nia |
| author_facet | Niloofar Nejatian Mohsen Yavary Nia Hooshyar Yousefyani Fatemeh Shacheri Melika Yavari Nia |
| author_sort | Niloofar Nejatian |
| collection | DOAJ |
| description | The aim of this study is to model a relationship between the amount of the suspended sediment load by considering the physiographic characteristics of the Lake Urmia watershed. For this purpose, the information from different stations was used to develop the sediment estimation models. Ten physiographic characteristics were used as input parameters in the simulation process. The M5 model tree was used to select the most important features. The results showed that the four factors of annual discharge, average annual rainfall, form factor and the average elevation of the watershed were the most important parameters, and the multilinear regression models were created based on these factors. Furthermore, it was concluded that the annual discharge was the most influential parameter. Then, the stations were divided into two homogeneous classes based on the selected features. To improve the efficiency of the M5 model, the non-stationary rainfall and runoff signals were decomposed into sub-signals by the wavelet transform (WT). By this technique, the available trends of the main raw signals were eliminated. Finally, the models were developed by multilinear regressions. The model using all four factors had the best performance (DC = 0.93, RMSE = 0.03, ME = 0.05 and RE = 0.15).
HIGHLIGHTS
This study links the physiographic characteristics of the watershed to M5 sediment estimation.;
M5 model tree selects the most important features of the watershed.;
Wavelet transform decomposes the raw main signals into several sub-signals and improve the model performance.; |
| first_indexed | 2024-04-09T13:36:12Z |
| format | Article |
| id | doaj.art-84877016b41a4fb398eea56b24b0b044 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-09T13:36:12Z |
| publishDate | 2023-04-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-84877016b41a4fb398eea56b24b0b0442023-05-09T10:17:20ZengIWA PublishingWater Science and Technology0273-12231996-97322023-04-018771791180210.2166/wst.2023.089089The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershedNiloofar Nejatian0Mohsen Yavary Nia1Hooshyar Yousefyani2Fatemeh Shacheri3Melika Yavari Nia4 Department of Civil Engineering of City College, City University of New York, New York, USA Department of Civil and Coastal Engineering, University of Florida, Gainesvile, Florida, USA Department of Engineering and Technology, Central Michigan University, Mount Pleasant, Michigan, USA Department of Biological Systems Engineering, Virginia Tech University, Virginia, Blacksburg, USA Department of Civil and Environmental Engineering, Politecnico Di Milano, Milan, Italy The aim of this study is to model a relationship between the amount of the suspended sediment load by considering the physiographic characteristics of the Lake Urmia watershed. For this purpose, the information from different stations was used to develop the sediment estimation models. Ten physiographic characteristics were used as input parameters in the simulation process. The M5 model tree was used to select the most important features. The results showed that the four factors of annual discharge, average annual rainfall, form factor and the average elevation of the watershed were the most important parameters, and the multilinear regression models were created based on these factors. Furthermore, it was concluded that the annual discharge was the most influential parameter. Then, the stations were divided into two homogeneous classes based on the selected features. To improve the efficiency of the M5 model, the non-stationary rainfall and runoff signals were decomposed into sub-signals by the wavelet transform (WT). By this technique, the available trends of the main raw signals were eliminated. Finally, the models were developed by multilinear regressions. The model using all four factors had the best performance (DC = 0.93, RMSE = 0.03, ME = 0.05 and RE = 0.15). HIGHLIGHTS This study links the physiographic characteristics of the watershed to M5 sediment estimation.; M5 model tree selects the most important features of the watershed.; Wavelet transform decomposes the raw main signals into several sub-signals and improve the model performance.;http://wst.iwaponline.com/content/87/7/1791feature selectionm5 model treephysiographic characteristicssuspended sediment loadwavelet transform |
| spellingShingle | Niloofar Nejatian Mohsen Yavary Nia Hooshyar Yousefyani Fatemeh Shacheri Melika Yavari Nia The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed Water Science and Technology feature selection m5 model tree physiographic characteristics suspended sediment load wavelet transform |
| title | The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| title_full | The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| title_fullStr | The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| title_full_unstemmed | The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| title_short | The improvement of wavelet-based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| title_sort | improvement of wavelet based multilinear regression for suspended sediment load modeling by considering the physiographic characteristics of the watershed |
| topic | feature selection m5 model tree physiographic characteristics suspended sediment load wavelet transform |
| url | http://wst.iwaponline.com/content/87/7/1791 |
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