Geophysical Groundwater Exploration in Arid Regions Using Integrated Land-Based Magnetic and DC Resistivity Measurements: A Case Study at Gilf Kebir Area, South Western Desert, Egypt

Gemail, Khaled S.; Ibrahim, Amin; Bedair, Sayed

doi:10.1007/978-3-030-77622-0_5

Cited by 7 publications

(1 citation statement)

References 21 publications

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“…Monitoring groundwater drawdown and rebound using time-lapse ERT [130] Temperature monitoring during a heat tracer experiment using cross-borehole ERT measurements combined with DTS measurements [80] Estimating groundwater flow velocity [53] Permanent monitoring of water circulation in clayey landslides [131] Subsurface characterization Estimating hydraulic conductivity [132] Subsurface characterization for groundwater resources [133] Monitoring of active layer dynamics using DCR and induced polarization (IP) [134] Mapping of subsurface of alluvial fans combining DCR and induced polarization [135] Mapping geological structures by combining DCR and IP [136] Groundwater in faults and water-bearing structures Review on using DCR to detect and monitor water inrush in tunnels and coal mines [137] Geophysical groundwater exploration in arid regions using DCR measurements [138] Combining DCR, induced polarization, and SP to locate flow through faults [139] Other An improved method to estimate depth of investigation in DCR [140] Seepage through an earthfill dam using DCR and SP [85] Optimized arrays for 2D cross-borehole measurements [68] Table A4. Overview of relevant applications of the SP method regarding groundwater flow.…”

Section: Appendix Amentioning

confidence: 99%

Measuring Groundwater Flow Velocities near Drinking Water Extraction Wells in Unconsolidated Sediments

Bakx

Bense

Karaoulis

et al. 2023

Water

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Groundwater is an important source of drinking water in coastal regions with predominantly unconsolidated sediments. To protect and manage drinking water extraction wells in these regions, reliable estimates of groundwater flow velocities around well fields are of paramount importance. Such measurements help to identify the dynamics of the groundwater flow and its response to stresses, to optimize water resources management, and to calibrate groundwater flow models. In this article, we review approaches for measuring the relatively high groundwater flow velocity measurements near these wells. We discuss and review their potential and limitations for use in this environment. Environmental tracer measurements are found to be useful for regional scale estimates of groundwater flow velocities and directions, but their use is limited near drinking water extraction wells. Surface-based hydrogeophysical measurements can potentially provide insight into groundwater flow velocity patterns, although the depth is limited in large-scale measurement setups. Active-heating distributed temperature sensing (AH-DTS) provides direct measurements of in situ groundwater flow velocities and can monitor fluctuations in the high groundwater flow velocities near drinking water extraction wells. Combining geoelectrical measurements with AH-DTS shows the potential to estimate a 3D groundwater flow velocity distribution to fully identify groundwater flow towards drinking water extraction wells.

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