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| DOI | 10.1016/j.ejrh.2024.101733 |
| Numerical groundwater flow modeling under future climate change in the Central Rift Valley Lakes Basin; Ethiopia | |
| 发表日期 | 2024 |
| EISSN | 2214-5818 |
| 起始页码 | 52 |
| 卷号 | 52 |
| 英文摘要 | Study area: Katar and Meki subbasins, Rift Valley Lakes Basin, Ethiopia.Study focus: This research was carried out to characterized the recharge mechanism and quantify the steady-state groundwater balance and its sensitivity to future climate change. A groundwater simulation model was constructed and calibrated using a hydro-geo spatial dataset. Three regional climate models were used to assess the potential impact of changes in future precipitation on the recharge rate and groundwater balance components.New Hydrogeological Insight: Groundwater potential assessment depends on accurate estimation of the recharge rate. Precipitation contributed 11.95% and 11.96% to groundwater recharge in the Katar and Meki subbasins, respectively. The steady-state numerical groundwater model was calibrated and the model performed in the ranges of R2: 0.95-0.99; RMSE: 16.17-25.18; and MAE: 12.69-24.55, demonstrating 'excellent' model performance. In particular, the model exhibited high sensitivity to changes in the recharge rate and horizontal hydraulic conductivity. Future change in precipitation caused a reduction in groundwater potential in the range of 6.24-40.32% by the 2040 s and 2070 s, respectively, in the Katar subbasin. Likewise, the Meki Subbasin will experience a reduction in groundwater potential in the range of 0.29-37.17% by the 2040 s and 2070 s, respectively. These results emphasize how crucial it is for future water resource development initiatives to take into account climate variability for sustainable groundwater development. |
| 英文关键词 | MODFLOW-NWT; Numerical Modeling; Climate change impact; Groundwater recharge; Hydrological Modeling; Central Rift Lakes; Basin; Ethiopia |
| 语种 | 英语 |
| WOS研究方向 | Water Resources |
| WOS类目 | Water Resources |
| WOS记录号 | WOS:001226822700001 |
| 来源期刊 | JOURNAL OF HYDROLOGY-REGIONAL STUDIES
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309869 |
| 作者单位 | Addis Ababa University; Addis Ababa University; Arba Minch University; Addis Ababa University; Griffith University; Griffith University; Newcastle University - UK |
| 推荐引用方式 GB/T 7714 | . Numerical groundwater flow modeling under future climate change in the Central Rift Valley Lakes Basin; Ethiopia[J],2024,52. |
| APA | (2024).Numerical groundwater flow modeling under future climate change in the Central Rift Valley Lakes Basin; Ethiopia.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,52. |
| MLA | "Numerical groundwater flow modeling under future climate change in the Central Rift Valley Lakes Basin; Ethiopia".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 52(2024). |
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