The method of electrical resistivity has proven very effective in the evaluation of groundwater. This specialized technique uses Dar-Zarrouk (D-Z) parameters in the estimation of longitudinal unit conductance, transverse unit resistance, and longitudinal resistivity to examine the groundwater level, to distinguish the fresh, brackish, and saline water interface, and to assess the storage capacity of groundwater in the Triassic sandstone aquifer system in the Tataouine region (South-Eastern Tunisia). In this context, 23 vertical electrical soundings (VESs) were carried out in the Tataouine region using the Schlumberger configuration with a current electrode with a maximum spacing of the current electrodes (AB) of 500–600 m. The results indicate that the study area consists of three types of aquifers: (i) silt/clay saline water (<20 Ωm), (ii) a mixture of sand and clay freshwater (20–40 Ωm), and (iii) sand freshwater (40–200 Ωm). These sand freshwater aquifers are characterized by low longitudinal unit conductance (0–2.8 S), high values of transverse unit resistance (more than 9,000 Ωm²), and longitudinal resistivity (more than 35 Ωm) and are mainly concentrated in the north, south, and south-west regions of the study area. It should also be noted that the coefficient of anisotropy (λ) overlaps and does not clearly differentiate the characteristics of the aquifers of fresh, brackish, and saline water. An interpretation of VESs can also determine the storage capacity of groundwater by determining yield index values. Groundwater supply for the entire study area was classified as low yield, with a percentage of 13% and a maximum of 31% of the study area and 56% of moderate yield. Lastly, the real data from the drilling confirm all these results presented previously. The findings suggest that D-Z parameters are useful for making a distinction of various aquifer zones.

电阻率方法已被证明在地下水评价中非常有效。这种专业技术使用 Dar-Zarrouk (DZ) 参数估计纵向单位电导率、横向单位电阻和纵向电阻率，以检查地下水位，区分淡水、咸水和咸水界面，并评估存储容量Tataouine 地区（突尼斯东南部）三叠纪砂岩含水层系统中的地下水。在这种情况下，使用 Schlumberger 配置在 Tataouine 地区进行了 23 次垂直电测深 (VES)，电流电极的最大间距 (AB) 为 500-600 m。结果表明，研究区由三种类型的含水层组成：(i) 淤泥/粘土盐水 (<20 Ωm)，(ii) 沙子和粘土淡水 (20–40 Ωm) 的混合物，和 (iii) 沙子淡水 (40–200 Ωm)。这些含沙淡水含水层的特点是纵向单位电导低 (0–2.8 S)、横向单位电阻值高 (超过 9,000 Ωm² )、纵向电阻率（大于 35 Ωm），主要集中在研究区的北部、南部和西南地区。还应该指出的是，各向异性系数 ( λ ) 重叠，并不能清楚地区分淡水、微咸水和咸水含水层的特征。VES 的解释还可以通过确定产量指数值来确定地下水的存储容量。整个研究区的地下水供应被归类为低产量，占研究区的13%，最高为31%，中等产量的56%。最后，钻探的真实数据证实了之前提出的所有这些结果。研究结果表明，DZ 参数可用于区分不同的含水层区域。