Geophysical characterization of the role of fault and fracture systems for recharging groundwater aquifers from surface water of Lake Nasser

Mansour, Khamis; Omar, Khaled; Ali, Kamal K.; Zaher, M. A.

doi:10.1016/j.nrjag.2018.02.001

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…In hydrogeological studies, the detection of fault zones is an important thing to do, because faults have an important role in the process of fluid movement below the surface. According to the statement Mansour [11], the hydraulic behavior in aquifers can be determined by proper characterization of fractures, fault zones and their connectivity as groundwater flow and contaminant transport are mostly provided thru an insufficient number of dominant fractures. Faults that occur in the shallow crust have an important influence on regional groundwater flow and hydrocarbon migration processes, faults formed in this area may cause rock deformation which is closely related to permeability heterogeneity and anisotropy.…”

Section: Introductionmentioning

confidence: 99%

Fault Zone Identification for Groundwater Flow Assessment Based On Seismic Reflection Survey Data at the Area of Felda Lepar Utara, Pahang, Malaysia

Putra

Sulaiman

Roslan

et al. 2022

J. Phys.: Conf. Ser.

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Geological structures such as faults and fractures have an important influence in the process of fluid movement below the surface. The hydraulic behavior in aquifers can be determined by proper characterization of fractures, fault zones and their connectivity. In this study, we concern on detection and identification of fault zones in the groundwater basin to verify whether faults in the basin area connect to the surface, and whether the fault zones occurring serve as conduits or barriers for groundwater to flow. The seismic reflection method with Common Depth Point (CDP) profiling technique has been applied in this study. Through this study, we have identified that several large and small-scale faults were found in the study area. Generally, these large-scale faults cut the bedrock (granodiorite) up to impermeable layer. This large-scale fault group can be a barrier that block the groundwater flow. The fault zone is connected to the surface as evidenced by the presence of normal fault that is clearly observed at the surface. This seismic method is good to apply in this study because it can be used to record deeper subsurface conditions, especially for fault zone detection purposes.

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Section: Introductionmentioning

confidence: 99%

Fault Zone Identification for Groundwater Flow Assessment Based On Seismic Reflection Survey Data at the Area of Felda Lepar Utara, Pahang, Malaysia

Putra

Sulaiman

Roslan

et al. 2022

J. Phys.: Conf. Ser.

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“…Apart from the accumulation of sediments, the nature of subsurface materials and anomalous seepages may contribute to the loss of dam reservoir water [2][3][4]. Subsurface geologic structures such as faults, fracture zones, basement depressions, and so on, if present beneath, a dam reservoir floor may also inhibit the storage capacity of the dam reservoir [5][6][7][8]. Geophysical methods, especially the electrical resistivity (ER) method, have been used in dam site investigation [2,3,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Spatial Resistivity Mapping of Ureje Dam Floor, Southwestern Nigeria

Fatoba

Eluwole

Sanuade

et al. 2019

Materials and Geoenvironment

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AbstractUreje Dam, Ado-Ekiti has witnessed drastic reduction in the water storage capacity of its reservoir. It became imperative to determine the possible cause(s) of the reduction in storage capacity. Geophysical investigation involving the vertical electrical sounding technique of the electrical resistivity method was conducted in the upstream part of the dam. Five lithologic units that include the mud/suspended materials, such as sandy clay, clay, weathered/fractured bedrock and fresh bedrock, were delineated. The respective resistivity and thickness range of the units are 2–19 ohm-m; 147–206 ohm-m, 2–38 ohm-m; 47–236 ohm-m and 455–1516 ohm-m and 0.4–1.9 m; 0.5–2.5 m; 1.0–12.2 m; 7.3–16.4 m and ∞. The thickness of suspended materials, resistivity/thickness of weathered layer and the presence of near-surface impervious layer were used as the main indices for the spatial demarcation of the dam axis in terms of vulnerability to loss of impounded water. Using the cumulative response of the indices, the study concluded that the eastern to southeastern parts of the dam axis showed the highest indications of vulnerability to loss of impounded water.

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