An assessment of water resources in Sinai Peninsula, using conventional and isotopic techniques, Egypt
by S.A. Al-Gamal; M. Sadek
International Journal of Hydrology Science and Technology (IJHST), Vol. 5, No. 3, 2015

Abstract: This paper aims to reveal and to assess the groundwater availability of major multi-layered aquifer systems in Sinai. Eight major aquifer systems were identified in Sinai. These major aquifer systems spread under large areas of Sinai (61,000 km²). Isotopic characteristics for each aquifer system were expressed in terms of Oxygen-18(δ¹⁸O), deuterium (δ²H) as well as the characteristics of deuterium excess (d-excess). The hydrologic difference is reflected by d-excess instead of δ¹⁸O. The low 'd-excess' values (≤ 10) as 6‰ for quaternary aquifer and 8.6‰ for Nubian sandstones aquifer suggest that there is significant evaporation of rainwater leaving the residual groundwater with lower values of 'd-excess'. High d-excess values (> 10‰) are largely from the Jurassic and Eocene aquifers with 12‰ for Jurassic and from 9 to 11‰ for Eocene aquifers respectively. Isotopic data have reflected different slopes and different constants expressing the non-homogeneity in the isotopic composition of rainwater recharging the aquifers of Sinai, due to the presence of different air masses.

Online publication date: Fri, 21-Aug-2015

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