A geoelectrical and hydrogeological study for the assessment of groundwater resources in Wadi Al Bih, UAE

Large Scale Electrical Resistivity Tomography Survey Correlated to Hydrogeological Data for Mapping Groundwater Salinization: A Case Study from a Multilayered Coastal Aquifer in Rhodope, Northeastern Greece

“…A very low resistivity zone (0.1-5 Ωm) correlated with saline water saturated layers, a medium resistivity zone (5-15 Ωm) was attributed to clays and silts, and two high resistivity zones generally representing freshwater saturated sediments of coarse grain size (15-40 Ωm) or alterations of thin marl and fine sand layers (40-150 Ωm). Similar findings were identified in previous studies exploiting resistivity geophysical methods in saline groundwater contaminated areas (de Franco et al, 2009;Ogilvy et al, 2009;Zarroca et al, 2011;Ebraheem et al, 2012;Kafri et al, 2014). In all the aforementioned studies, saline water was correlated with very low apparent resistivity values (between 0.1 and 5 Ωm) while slightly higher values were attributed to clays, and higher values (>15 Ωm) to freshwater saturated layers.…”

“…In certain occasions (Wilson et al, 2006), the ERT technique was used in order to supplement and clarify the results of initially executed one dimensional VES in the same region. The efficiency of the ERT technique in a variety of inshore geological settings is demonstrated by various researchers, including coastal alluvial aquifers (Abdul Nassir et al, 2000;Morrow et al, 2010;Ebraheem et al, 2012;Mas-Pla et al, 2012), coastal deltaic deposits (Maillet et al, 2005;Martínez et al, 2009;Gurunadha Rao et al, 2011), or inland saline environments, e.g., in the Okavango Delta, Botswana (Bauer et al, 2006), in the Dead Sea, Jordan aquifer (Batayneh, 2006), and in Querenca-Silves, south Portugal (Leitão et al, 2014). These authors have utilized various array configurations and electrode spacing intervals, and showed that the method is able to provide a good correlation between specific resistivity values and hydrogeological properties, and thus, to calculate formation factors (Archie, 1942) for the separate aquifer units, by combining groundwater electrical resistivity measurements and bulk formation resistivity distribution.…”

Seawater Intrusion and Nitrate Pollution in Coastal Aquifer of Marathon Basin

“…Wilcox (1955) diagram (Fig. 6) is widely used and is especially implemented to classify groundwater quality for irrigation (Ebraheem et al, 2012;Banoeng-Yakubo et al, 2009;Ganyaglo et al, 2011;Swarna Latha and Nageswara Rao, 2012;Mtoni et al, 2013). The calculated SAR values range from 0.86 to 7.55 in groundwater in the study area and almost all samples fall into excellent class (Table 3).…”

Assessment of seawater intrusion to the agricultural sustainability at the coastal area of Carey Island, Selangor, Malaysia

“…Sathish et al (2011) combined the geo-electrical and the geochemical methods to assess the zone of mixing between seawater and groundwater in the coastal aquifer in South Chennai, in Tamil Nadu, India. Ebraheem et al (2012) conducted a 2D earth resistivity imaging survey in the Wadi Al Bih area in the Northern UAE to determine the potential of the quaternary aquifer and its groundwater quality. Khalil et al (2012) used the geo-electrical method and time domain electromagnetic method to access seawater intrusion into the groundwater system in the northwestern coast of Egypt.…”