Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs
In this study, we attempt to establish an alternative method for estimating the groundwater levels and the specific yields of an unconfined aquifer for the evaluation of potential groundwater reservoirs. We first converted the inverted resistivity into the normalized water content. Then, we inverted...
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MDPI AG
2022-01-01
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| Online Access: | https://www.mdpi.com/2073-4441/14/3/420 |
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| author | Ping-Yu Chang Jordi Mahardika Puntu Ding-Jiun Lin Hsin-Ju Yao Liang-Cheng Chang Kuan-Hung Chen Wan-Jhong Lu Tzu-Hua Lai Yonatan Garkebo Doyoro |
| author_facet | Ping-Yu Chang Jordi Mahardika Puntu Ding-Jiun Lin Hsin-Ju Yao Liang-Cheng Chang Kuan-Hung Chen Wan-Jhong Lu Tzu-Hua Lai Yonatan Garkebo Doyoro |
| author_sort | Ping-Yu Chang |
| collection | DOAJ |
| description | In this study, we attempt to establish an alternative method for estimating the groundwater levels and the specific yields of an unconfined aquifer for the evaluation of potential groundwater reservoirs. We first converted the inverted resistivity into the normalized water content. Then, we inverted the parameters of the Brooks-Corey model from the vertical profiles of the water content by assuming that the suction head was in proportion to the elevation regarding a predefined base level. Lastly, we estimated the groundwater level, the theoretical specific yield, and the specific yield capacity from the Brooks-Corey parameters at every survey site in the study area. The contour maps of the time-lapse groundwater levels show that the groundwater flows downstream, with a higher hydraulic gradient near the river channel than in the area away from the main channel. We conclude that the estimated maximum specific yield capacities are consistent with that derived from the pumping tests in the nearby observation well. Additionally, the specific yield capacities are only three quarters to two thirds of the theoretical specific yields derived from the difference between the residual and saturated water contents in the Brooks-Corey model. We conclude that the distribution pattern of the specific yields had been subjected to the distribution of natural river sediments in the Minzu Basin, since the modern channel was artificially modified. Although we had to make some simple assumptions for the estimations, the results show that the surface resistivity surveys provide reasonable estimations of the hydraulic parameters for a preliminary assessment in an area with few available wells. |
| first_indexed | 2024-03-09T22:56:03Z |
| format | Article |
| id | doaj.art-4301f0a30a3b475bbca33edf326279bb |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T22:56:03Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-4301f0a30a3b475bbca33edf326279bb2023-11-23T18:11:26ZengMDPI AGWater2073-44412022-01-0114342010.3390/w14030420Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater ReservoirsPing-Yu Chang0Jordi Mahardika Puntu1Ding-Jiun Lin2Hsin-Ju Yao3Liang-Cheng Chang4Kuan-Hung Chen5Wan-Jhong Lu6Tzu-Hua Lai7Yonatan Garkebo Doyoro8Department of Earth Sciences, National Central University, Taoyuan 320, TaiwanDepartment of Earth Sciences, National Central University, Taoyuan 320, TaiwanDepartment of Earth Sciences, National Central University, Taoyuan 320, TaiwanDepartment of Earth Sciences, National Central University, Taoyuan 320, TaiwanDepartment of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, TaiwanDepartment of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, TaiwanCentral Geological Survey of the Ministry of Economic Affairs, Taipei 115, TaiwanCentral Geological Survey of the Ministry of Economic Affairs, Taipei 115, TaiwanDepartment of Earth Sciences, National Central University, Taoyuan 320, TaiwanIn this study, we attempt to establish an alternative method for estimating the groundwater levels and the specific yields of an unconfined aquifer for the evaluation of potential groundwater reservoirs. We first converted the inverted resistivity into the normalized water content. Then, we inverted the parameters of the Brooks-Corey model from the vertical profiles of the water content by assuming that the suction head was in proportion to the elevation regarding a predefined base level. Lastly, we estimated the groundwater level, the theoretical specific yield, and the specific yield capacity from the Brooks-Corey parameters at every survey site in the study area. The contour maps of the time-lapse groundwater levels show that the groundwater flows downstream, with a higher hydraulic gradient near the river channel than in the area away from the main channel. We conclude that the estimated maximum specific yield capacities are consistent with that derived from the pumping tests in the nearby observation well. Additionally, the specific yield capacities are only three quarters to two thirds of the theoretical specific yields derived from the difference between the residual and saturated water contents in the Brooks-Corey model. We conclude that the distribution pattern of the specific yields had been subjected to the distribution of natural river sediments in the Minzu Basin, since the modern channel was artificially modified. Although we had to make some simple assumptions for the estimations, the results show that the surface resistivity surveys provide reasonable estimations of the hydraulic parameters for a preliminary assessment in an area with few available wells.https://www.mdpi.com/2073-4441/14/3/420groundwatertime-lapseresistivity imaging methodspecific yield |
| spellingShingle | Ping-Yu Chang Jordi Mahardika Puntu Ding-Jiun Lin Hsin-Ju Yao Liang-Cheng Chang Kuan-Hung Chen Wan-Jhong Lu Tzu-Hua Lai Yonatan Garkebo Doyoro Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs Water groundwater time-lapse resistivity imaging method specific yield |
| title | Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs |
| title_full | Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs |
| title_fullStr | Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs |
| title_full_unstemmed | Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs |
| title_short | Using Time-Lapse Resistivity Imaging Methods to Quantitatively Evaluate the Potential of Groundwater Reservoirs |
| title_sort | using time lapse resistivity imaging methods to quantitatively evaluate the potential of groundwater reservoirs |
| topic | groundwater time-lapse resistivity imaging method specific yield |
| url | https://www.mdpi.com/2073-4441/14/3/420 |
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