Simulation of the effect of salinity-clay variation on the electrical potential of the quaternary aquifer using multiphysics modeling

Ammar, Abdellah; El-Ata, Ahmed S. Abu; Mustafa, Abdelrahman; Kamal, K. A.

doi:10.1007/s40808-022-01561-w

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The electrical interface will be used to compute the electrical potential in the dry (resistive medium) and moisture (semi-conductive medium) vadose zone sediments. More details about this model were stated by (Ammar 2021) and (Ammar et al 2023). The block geometry, the number of geologic layers (three-layer model) and their geologic and electrical (resistivity and conductivity) characteristics are shown in Fig.…”

Section: Inputs and Assumptions Of Numerical Modelmentioning

confidence: 99%

Numerical modeling of vadose zone electrical resistivity to evaluate its hydraulic parameters

Masria,

Seif,

Ghareeb

et al. 2023

Appl Water Sci

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Studying and determining the physical properties and hydraulic parameters of vadose zone sediments is an important key to evaluate the infiltration rate into them and assessing the extent to which aquifer sediments benefit from rainwater harvesting in arid and semi-arid areas. Due to the lack of sufficient data on the characteristics of this zone depths, a numerical modeling was used to simulate the electrical resistivity of these sediments by applying the electrical resistivity method, because it is the most affected by the physical properties of dry and wet sediments. This study was applied as a proposal for application in northwestern KSA to calculate the vertical hydraulic conductivity and transmissivity for the vadose zone. This was implemented by assuming a three-layer model using COMSOL Multiphysics model with different electrical resistivity values depending on some in situ electrical resistivity measurements for shallow depths. Hence, the infiltration rate of sediments in this area can be predicted with depth and its effect on aquifer recharge. The focus was on calculating the vertical hydraulic parameters of the most widespread surface sediments with depth and comparing the results of calculating these parameters for some sediments laboratory-wise to ensure their accuracy. Then, their infiltration rate was inferred separately with depth, predicting their ability to aquifer recharge and make the most of rainwater harvesting. Finally, this study can be considered as a preliminary study to determine the expected forward model of electrical resistivity and hydraulic parameters values for the vadose zone sediments with depth along the area and in any other areas, and then apply them accurately in situ to estimate the extent of its usefulness in rainwater harvesting, especially aquifer recharge.

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Section: Inputs and Assumptions Of Numerical Modelmentioning

confidence: 99%