Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt
In coastal groundwater aquifers, seawater intrusion is seen as a significant issue. Increasing the groundwater pumping rate enhances seawater intrusion into groundwater in the coastal aquifers. In Egypt, the Nile Delta aquifer (NDA) is extremely vulnerable to Mediterranean Sea seawater intrusion. Th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Arabic |
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Faculty of engineering, Tanta University
2022-03-01
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| Series: | Journal of Engineering Research - Egypt |
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| Online Access: | https://erjeng.journals.ekb.eg/article_220138_1d4c038a8988d1075944ef9a20b62277.pdf |
| _version_ | 1797799363318120448 |
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| author | Asaad Armanuos Mona Eldin Ibrahim Abdelazim Negm Jiro Takemura Chihiro Yoshimura Wael Mahmod |
| author_facet | Asaad Armanuos Mona Eldin Ibrahim Abdelazim Negm Jiro Takemura Chihiro Yoshimura Wael Mahmod |
| author_sort | Asaad Armanuos |
| collection | DOAJ |
| description | In coastal groundwater aquifers, seawater intrusion is seen as a significant issue. Increasing the groundwater pumping rate enhances seawater intrusion into groundwater in the coastal aquifers. In Egypt, the Nile Delta aquifer (NDA) is extremely vulnerable to Mediterranean Sea seawater intrusion. The study's major goal was to create a three-dimensional groundwater model that included all branches of the irrigation system and their groundwater recharges into the NDA. The NDA model was built by using the SEAWAT program. The model validation was achieved by comparing its results with the observation data and results from previous models. Three scenarios were proposed considering: 1) sea level rise, 2) changes in the rate of groundwater abstraction, and 3) a combination of the conditions of the two previous scenarios' conditions. A rise in Mediterranean Sea levels by 25, 50, 75 and 100 cm caused additional saltwater intrusion to distances of 5.11 km, 7.10, 7.62 and 8.2 km, respectively. Moreover, in comparison to the base situation, a decrease in the lower boundary's groundwater head by 25, 50, 75 and 100 cm caused the saltwater to advance further inland to distances of 5.30, 5.47, 5.52 and 5.75 km, respectively. The third scenario proved to be the worst case, in which saltwater intrusion increased to a distance of 7.22, 7.73, 8.20 and 10.20 km, respectively. Compared with previous model studies, the results showed that saltwater intrusion length decreases by 4.0 km after including all branches of the irrigation network. |
| first_indexed | 2024-03-13T04:17:43Z |
| format | Article |
| id | doaj.art-6a0b30a628894d779d9cec7965a85905 |
| institution | Directory Open Access Journal |
| issn | 2356-9441 2735-4873 |
| language | Arabic |
| last_indexed | 2024-03-13T04:17:43Z |
| publishDate | 2022-03-01 |
| publisher | Faculty of engineering, Tanta University |
| record_format | Article |
| series | Journal of Engineering Research - Egypt |
| spelling | doaj.art-6a0b30a628894d779d9cec7965a859052023-06-20T20:00:04ZaraFaculty of engineering, Tanta UniversityJournal of Engineering Research - Egypt2356-94412735-48732022-03-0161102810.21608/erjeng.2022.113766.1046220138Investigation of Seawater Intrusion in the Nile Delta Aquifer, EgyptAsaad Armanuos0Mona Eldin Ibrahim1Abdelazim Negm2Jiro Takemura3Chihiro Yoshimura4Wael Mahmod5Irrigation and Hydraulics Engineering Department, Faculty of Engineering, Tanta UniversityDean of School of Energy Resources, Environmental and Chemical & Petrochemical Engineering, Egypt-Japan University of Science and Technology, New Borg El Arab City, AlexanderiaProf of hydraulics, Faculty of Engineering, Zagazig University, Zagazig, EgyptDr. of Eng., Associate Professor, Dept. of Civil Engineering, Tokyo Institute of Technology(2-12-1 Oookayama, Meguro, Tokyo 152-8552, Japan)Dr. of Eng., Associate Professor, Dept. of Civil Engineering, Tokyo Institute of Technology (2-12-1Oookayama, Meguro, Tokyo 152-0033, JapanCivil Engineering Department, Faculty of Engineering, Assiut University, 71515, AssiutIn coastal groundwater aquifers, seawater intrusion is seen as a significant issue. Increasing the groundwater pumping rate enhances seawater intrusion into groundwater in the coastal aquifers. In Egypt, the Nile Delta aquifer (NDA) is extremely vulnerable to Mediterranean Sea seawater intrusion. The study's major goal was to create a three-dimensional groundwater model that included all branches of the irrigation system and their groundwater recharges into the NDA. The NDA model was built by using the SEAWAT program. The model validation was achieved by comparing its results with the observation data and results from previous models. Three scenarios were proposed considering: 1) sea level rise, 2) changes in the rate of groundwater abstraction, and 3) a combination of the conditions of the two previous scenarios' conditions. A rise in Mediterranean Sea levels by 25, 50, 75 and 100 cm caused additional saltwater intrusion to distances of 5.11 km, 7.10, 7.62 and 8.2 km, respectively. Moreover, in comparison to the base situation, a decrease in the lower boundary's groundwater head by 25, 50, 75 and 100 cm caused the saltwater to advance further inland to distances of 5.30, 5.47, 5.52 and 5.75 km, respectively. The third scenario proved to be the worst case, in which saltwater intrusion increased to a distance of 7.22, 7.73, 8.20 and 10.20 km, respectively. Compared with previous model studies, the results showed that saltwater intrusion length decreases by 4.0 km after including all branches of the irrigation network.https://erjeng.journals.ekb.eg/article_220138_1d4c038a8988d1075944ef9a20b62277.pdfgroundwaternile delta aquiferclimate changegroundwater pumpingsea level rise |
| spellingShingle | Asaad Armanuos Mona Eldin Ibrahim Abdelazim Negm Jiro Takemura Chihiro Yoshimura Wael Mahmod Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt Journal of Engineering Research - Egypt groundwater nile delta aquifer climate change groundwater pumping sea level rise |
| title | Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt |
| title_full | Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt |
| title_fullStr | Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt |
| title_full_unstemmed | Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt |
| title_short | Investigation of Seawater Intrusion in the Nile Delta Aquifer, Egypt |
| title_sort | investigation of seawater intrusion in the nile delta aquifer egypt |
| topic | groundwater nile delta aquifer climate change groundwater pumping sea level rise |
| url | https://erjeng.journals.ekb.eg/article_220138_1d4c038a8988d1075944ef9a20b62277.pdf |
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