The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources
Estuarine projects can quickly change the estuarine topography and influence the hydrodynamics and saltwater intrusion. The Changjiang Estuary is a multiple-bifurcation megaestuary, and the outstanding feature of the saltwater intrusion is the saltwater spillover from the North Branch (NB) into the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/11/2107 |
| _version_ | 1797458755401547776 |
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| author | Yidi Yang Jianrong Zhu Zhengbing Chen Rui Ma |
| author_facet | Yidi Yang Jianrong Zhu Zhengbing Chen Rui Ma |
| author_sort | Yidi Yang |
| collection | DOAJ |
| description | Estuarine projects can quickly change the estuarine topography and influence the hydrodynamics and saltwater intrusion. The Changjiang Estuary is a multiple-bifurcation megaestuary, and the outstanding feature of the saltwater intrusion is the saltwater spillover from the North Branch (NB) into the South Branch (SB). In this study, the improved ECOM-si model was adopted to numerically experiment with the impact of the sluices that are planned for construction in the upper, middle, and lower reaches of the NB on the saltwater intrusion and freshwater resources. The simulation results show that, on the one hand, sluice construction can eliminate the saltwater spillover from the NB into the SB; on the other hand, sluice construction makes water enter the NB from the SB, and the runoff discharging into the sea in the SB decreases. The water intake time of the Qingcaosha Reservoir (QCSR) increases by 3.2 days for sluice construction in the upper reaches of the NB and decreases by 0.97 and 0.94 days for sluice construction in the middle and lower reaches of the NB, respectively. Considering the impact of sluice construction in the NB on the saltwater intrusion and freshwater resources, the construction of sluices in the upper reaches of the NB is recommended. |
| first_indexed | 2024-03-09T16:41:44Z |
| format | Article |
| id | doaj.art-1686a9a3990f47df8f82f6a623cdc34d |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T16:41:44Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-1686a9a3990f47df8f82f6a623cdc34d2023-11-24T14:50:26ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-11-011111210710.3390/jmse11112107The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater ResourcesYidi Yang0Jianrong Zhu1Zhengbing Chen2Rui Ma3State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, ChinaState Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, ChinaKey Laboratory of Changjiang Regulation and Protection, Ministry of Water Resources, Changjiang Design Group Co., Ltd., Wuhan 430010, ChinaState Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, ChinaEstuarine projects can quickly change the estuarine topography and influence the hydrodynamics and saltwater intrusion. The Changjiang Estuary is a multiple-bifurcation megaestuary, and the outstanding feature of the saltwater intrusion is the saltwater spillover from the North Branch (NB) into the South Branch (SB). In this study, the improved ECOM-si model was adopted to numerically experiment with the impact of the sluices that are planned for construction in the upper, middle, and lower reaches of the NB on the saltwater intrusion and freshwater resources. The simulation results show that, on the one hand, sluice construction can eliminate the saltwater spillover from the NB into the SB; on the other hand, sluice construction makes water enter the NB from the SB, and the runoff discharging into the sea in the SB decreases. The water intake time of the Qingcaosha Reservoir (QCSR) increases by 3.2 days for sluice construction in the upper reaches of the NB and decreases by 0.97 and 0.94 days for sluice construction in the middle and lower reaches of the NB, respectively. Considering the impact of sluice construction in the NB on the saltwater intrusion and freshwater resources, the construction of sluices in the upper reaches of the NB is recommended.https://www.mdpi.com/2077-1312/11/11/2107numerical simulationwater transportsalt transportsalinity variationestuarine projectsNorth Branch |
| spellingShingle | Yidi Yang Jianrong Zhu Zhengbing Chen Rui Ma The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources Journal of Marine Science and Engineering numerical simulation water transport salt transport salinity variation estuarine projects North Branch |
| title | The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources |
| title_full | The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources |
| title_fullStr | The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources |
| title_full_unstemmed | The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources |
| title_short | The Impact of Sluice Construction in the North Branch of the Changjiang Estuary on Saltwater Intrusion and Freshwater Resources |
| title_sort | impact of sluice construction in the north branch of the changjiang estuary on saltwater intrusion and freshwater resources |
| topic | numerical simulation water transport salt transport salinity variation estuarine projects North Branch |
| url | https://www.mdpi.com/2077-1312/11/11/2107 |
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