Assessment of groundwater resources of the Nuweiba area at Sinai Peninsula, Egypt by using geoelectric data corrected for the influence of near surface inhomogeneities

Abbas, Akhtar; Atya, Magdy; Al-Sayed, El-Said; Kamei, Hiroyuki

doi:10.1016/j.jappgeo.2004.04.002

Cited by 13 publications

(9 citation statements)

References 6 publications

(6 reference statements)

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“…Flash flood occurrence and volume modified after Cools et al (2012). It is important to note that during the last 33 years, very high floods occurred 2 times in the years 1987 and 1997, and high floods occurred 5 times in the years 1988, 1990, 1993, 1997, and 2010; additionally, moderate floods occurred 7 times in the years 1988,1991,1994 thickness and composition of each layer are shown in Figure 2, which illustrates hydrogeological cross sections in the study area [39] [40] [41]. The Quaternary aquifer in the Wadi Watir delta is an unconfined aquifer in which the water depths range from 2.4 to 40.8 m [41].…”

Section: Aquifer Hydrogeologymentioning

confidence: 91%

Use of Numerical Groundwater Modeling to Assess the Feasibility of Aquifer Storage and Recovery (ASR) in the Wadi Watir Delta, Sinai, Egypt

Sallam¹

2019

JWARP

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The lack of water resources in Egypt's Sinai Peninsula is a major constraint for further socioeconomic development, and flash floods in this region can damage roads and infrastructure. The Wadi Watir basin is the main water source for the groundwater aquifer, which supplies fresh water to Nuweiba city, where demands for groundwater are increasing. The objective of this research was to assess the hydrogeological suitability of installing Aquifer Storage and Recovery (ASR) systems in the Wadi Watir delta by using numerical groundwater models. The developed models were used to evaluate the effects of hydrogeological and operational parameters on the recovery efficiency of ASR systems at five potential locations in the study area. As the estimation of recovery efficiency depends on the salinity of recovered water, the recovered water salinity limit was assumed as 150% of the injected water salinity, where 150% refers to the point at which recovery has ended because the concentration of recovered water reached 150% of that of injected water. The most important output from the model runs was that the recovery efficiency of these ASR systems ranged from 25% to 54% with a longitudinal dispersivity of 10 m, volume of injected water of 12,000 m 3 , and storage period of 180 days. The main conclusions are as follows. 1) Using coupled numerical groundwater flow and solute transport models is an effective tool for predicting the effects of mixing between injected water and ambient groundwater in ASR systems.2) The groundwater aquifer in the study area is not suitable as strategic area for ASR systems because the thickness of the water storage layer is relatively small and the distance to the sea is very close; consequently, it is recommended that artificial recharge systems be developed with existing technology to replenish the groundwater aquifer in the Wadi Watir delta.

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Section: Aquifer Hydrogeologymentioning

confidence: 91%

Use of Numerical Groundwater Modeling to Assess the Feasibility of Aquifer Storage and Recovery (ASR) in the Wadi Watir Delta, Sinai, Egypt

Sallam¹

2019

JWARP

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“…This can lead to a vertical shift for the whole VES curve along the vertical axis

(ρ_{a})

, without causing a change for the curve form or type (Abbass et al . ).…”

Section: Resistivitymentioning

confidence: 97%

“…This shift can also be explained due to the presence of the potential electrodes (MN) close or in near-surface inhomogenities and is called the p-effect. This can lead to a vertical shift for the whole VES curve along the vertical axis (ρ a ), without causing a change for the curve form or type (Abbass et al 2004).…”

Section: Figurementioning

confidence: 99%

An approach to estimate porosity and groundwater salinity by combined application of GPR and VES: a case study in the Nubian sandstone aquifer

Khalil

Hafez

Santos

et al. 2010

Near Surface Geophysics

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Ground‐penetrating radar signal propagation is strongly controlled by water content. Therefore, it can be employed to address numerous hydrogeological problems, ranging from geological structures to petrophysical properties. In the present study, ground‐penetrating radar and vertical electric sounding measured data are analysed and combined to answer the most hydrogeologically simple and geophysically complex question of groundwater salinity. Geophysical logging, in particular resistivity logs were used to correct the static shift’s usual effect on vertical electric soundings (VES), as well as to correlate with surface data. The dielectric constant of the water bearing horizon was estimated through ground‐penetrating radar data interpretation, which in turn plays an important role in the estimation of the volumetric water content. On the other hand, vertical electrical sounding was used to estimate water saturation. Combining the results obtained from both methods, the groundwater salinity of a shallow aquifer, mostly clay‐free, can be estimated. The method is applied to a data set measured over a sand aquifer in the Aswan area, Egypt. The results obtained indicated that the present technique is efficient, since the estimated groundwater salinity using this technique is about 1152 mg/l, whereas the groundwater salinity estimated from water sample analysis is about 950 mg/l.

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“…A lot of experimentation took place until the problem was solved by the recent advent of the resistivity imaging technique. Abbas et al (2004) applied geoelectric sounding taking account of near-surface inhomogeneities in the semi-arid and arid area characterized by a sequence of sedimentary rocks formed over a long geologic period with an unconformity that separates it from the underlying igneous and metamorphic rocks in Egypt. The alluvium fan of Wadi Watir is of quaternary age, and it is the major water-bearing formation and groundwater that occur in different types of lithological compositions under unconfined and confined conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The alluvium fan of Wadi Watir is of quaternary age, and it is the major water-bearing formation and groundwater that occur in different types of lithological compositions under unconfined and confined conditions. Abbas et al (2004) attempted the use of one-dimensional VES in cases where neither two-dimensional nor three-dimensional survey equipment was not available nor this has improved the one-dimensional survey technique by better estimation of geoelectrical parameters known as the Dar Zarrouk parameters. They also provided a method of studying the geologic conditions of the study area by the use of a two-dimensional representation of the number of the VES that have the same range of resistivity values at discrete half current electrode distance (AB/2) and the plot revealed the dominant curve type for the area which indicated is interpreted the presence of continuous geologic structures.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeophysical characterization of aquifers in Upper Denkyira East and West Districts, Ghana

Agyemang

2021

Appl Water Sci

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Hydrogeophysical assessment of aquifers in the Upper Denkyira East and West Districts of Ghana has been carried out for groundwater potential and protective capacity of the overburden rocks determination. The data for the study were obtained from the Regional office of Community Water and Sanitation Agency (CWSA), Cape Coast. A total of thirty-seven VES probed using a Schlumberger array with maximum current electrode spacing (AB/2) of 100 m at each point using the Abeam Terameter was used. The data were interpreted using the partial curve matching and WINRESIST computer iteration program techniques. The thickness and resistivities of the various overburden layers, basement resistivity, reflection coefficient and longitudinal conductance were used for the assessment of the groundwater potential and the protective capability of the overburden layers. The study revealed three-to-six layers with an average of four (4) layers including laterite (0.34–3.57 m); clay (0.64–8.84 m); sandy-clay (0.67–27.09 m) and slightly-to-highly weathered bedrock which includes phyllites and granite (3.09–86.89 m) that show high level of heterogeneity of electrical resistivity of the geologic materials within the study area. The weathered layers serve as the aquiferous zones. About 21.6%, 62.2%, 2.7% and 13.5% showed high, medium, low and very low potential for groundwater, respectively, with higher groundwater potentials at the western and south-eastern corner of the study area underlain by the Birimian and Tarkwaian formations, respectively, indicating that the two formations have similar groundwater potentials in the study area. The lowest groundwater potential was observed at the point underlain by the granitic intrusion. The assessment of the protective capacity of the aquifer showed very good (5%), good (27%), moderate (19%), weak (22%) and poor (27%) indicating that the study area is overlain mostly by materials of different protective capacities. This study presents information on the aquifer protective capacity evaluation by using geophysical technique and it has revealed that the Birimian formation has a good aquifer protective capacity than the Tarkwaian formation and has also confirmed the effectiveness of using geophysical techniques in ground investigation.

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Assessment of groundwater resources of the Nuweiba area at Sinai Peninsula, Egypt by using geoelectric data corrected for the influence of near surface inhomogeneities

Cited by 13 publications

References 6 publications

Use of Numerical Groundwater Modeling to Assess the Feasibility of Aquifer Storage and Recovery (ASR) in the Wadi Watir Delta, Sinai, Egypt

Use of Numerical Groundwater Modeling to Assess the Feasibility of Aquifer Storage and Recovery (ASR) in the Wadi Watir Delta, Sinai, Egypt

An approach to estimate porosity and groundwater salinity by combined application of GPR and VES: a case study in the Nubian sandstone aquifer

Hydrogeophysical characterization of aquifers in Upper Denkyira East and West Districts, Ghana

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