Achmad Darul, Dasapta Erwin Irawan, Prihadi Sumintadireja, Gumilar Ramadhan
Background: The first groundwater modeling of the Bandung Aquifer Basin in 2009 used a finite difference method with a 0.5 km² grid, representing three volcanic geological layers. It assumed uniform hydraulic properties and used an equivalent homogeneous aquifer with anisotropic hydraulic conductivity. • Dataset: The study analyzed a comprehensive dataset of 196 boreholes. Of these, 130 boreholes had pumping test data, while the remaining 66 had both pumping test and well logging data. This diverse dataset provided a robust foundation for the analysis. Hydraulic conductivity (K) was estimated using the ordinary kriging method, a geostatistical technique that allows for optimal interpolation based on regression against observed values of surrounding data points. • Analyses: This study examines K distribution using a block model, employing finite difference modeling with an structured grid 0.1 km². Regionalized variable scenarios were applied to reduce estimation errors for certain areas, showing improved correlation. • Expected output: Results include: (1) Distribution maps of hydraulic conductivity; (2) Validation metrics and visualization comparing modeled to observed data; (3) Assessments of heterogeneous K values' impact on groundwater flow; (4) Recommendations for sustainable groundwater management practices. © 2024 The Author(s)
Doctoral Program of Geological Engineering, Faculty of Earth Sciences and Technology, Bandung Institute of Technology (ITB), West Java, Bandung, 40132, Indonesia; Applied Geology Research Group, Faculty of Earth Sciences and Technology, Bandung Institute of Technology (ITB), West Java, Bandung, 40132, Indonesia; Department of Geological Engineering, Faculty of Industrial Technology, Sumatera Institute of Technology (ITERA), Lampung, Way Hui, 35365, Indonesia
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