Modifying the water table fluctuation method for calculating recharge in sloping aquifers

Yimam, Abdu Y.; Sishu, Feleke K.; Assefa, Tewodros T.; Steenhuis, Tammo S.; Reyes, Manuel R.; Srinivasan, Raghavan; Tilahun, Seifu A.

doi:10.1016/j.ejrh.2023.101325

Cited by 2 publications

(3 citation statements)

References 63 publications

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“…As described above in the validation of the GWSA section, GWSA fluctuation exhibited a strong connection with the rainfall and the Lake Tana water anomalies that are governed by climatic events [ 92 ]. The absence of recharge and the increased use of groundwater mainly for domestic and irrigation activities in the dry months might be the main reasons for groundwater loss in the region [ 97 , 98 ].…”

Section: Resultsmentioning

confidence: 99%

“…A similar finding was witnessed in the present case [ 102 ]. It might be due to uncertainties associated with specific yield (Sy) estimation and in-situ water table measurement imperfections [ 98 , 103 ]. In general, it can be comprehended that the results obtained in the study using GLDAS-2.2 are plausible; and are governed by precipitation, climatic events (droughts), anthropogenic activities, topography, and other groundwater recharge influencing factors [ 21 , 97 , 98 , 100 , 101 ].…”

Section: Resultsmentioning

confidence: 99%

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Long-term spatiotemporal dynamics of groundwater storage in the data-scarce region: Tana sub-basin, Ethiopia

Berhanu,

Lohani,

Hatiye

2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Long-term spatiotemporal dynamics of groundwater storage in the data-scarce region: Tana sub-basin, Ethiopia

Berhanu,

Lohani,

Hatiye

2024

Heliyon

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“…If the RMSE, MRE, and MAE values are good, this can indicate that the prediction data or model of gravity data created is of good quality. This is related to the more precise and accurate data with actual gravity data whose purpose is to analyse the geological structure of the research area in supporting the potential recharge area [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Geological Structure Model for Recharge Area in Patuha Geothermal Field

Indriani,

Anjasmara,

Utama

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Geothermal sustainability requires geological structure analysis using gravity methods for groundwater management. Geological structure analysis reviews fault data. Geological structure as a pathway for fluid movement for groundwater management in the research area, especially the Patuha Geothermal Field, West Java. This study uses global gravity model, terrestrial gravity, DEM, and geological data. The gravity method applied in this research involves calculations for latitude correction, free air correction, bouguer correction and terrain correction. The final results of this research are free air anomaly, complete Bouguer anomaly, and model evaluation (MRSE, MRE, and MAE). Free air anomaly results from free air correction of global gravity model data. DEM topography analyzes free air anomaly. The FAA data model evaluated RMSE at 1.27, MRE at 0.004, and MAE at 0.83. 138.02–280.26 mgal is the FAA range. The research area’s elevation range is 836–2431 m. Topography and free air anomaly correlate 0.75. Positive high connection. Mountains and plateaus may have positive gravity anomalies. Free air, bouguer, terrain, and CBA are applied to global gravity model data. The CBA model evaluation indicates quality. RMSE is 1.47, MRE is 0.012, and MAE is 1.11. CBA fluctuation implies fault spread. Faults serve as water flow conduits and channels, increasing the risk of infiltration. Meanwhile, cracks are being distributed as conduits and for infiltration. This research forms the basis for developing and increasing geothermal production so that further studies are needed regarding the influence of geological structures for reservoir in geothermal areas.

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Modifying the water table fluctuation method for calculating recharge in sloping aquifers

Cited by 2 publications

References 63 publications

Long-term spatiotemporal dynamics of groundwater storage in the data-scarce region: Tana sub-basin, Ethiopia

Long-term spatiotemporal dynamics of groundwater storage in the data-scarce region: Tana sub-basin, Ethiopia

Geological Structure Model for Recharge Area in Patuha Geothermal Field

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