caa a22 4500 445814500 CHVBK 20180317145221.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10040-010-0646-5 doi (NATIONALLICENCE)springer-10.1007/s10040-010-0646-5 The distribution of saline groundwater and its relation to the hydraulic conditions of aquifers and aquitards: examples from Israel [Elektronische Daten] [Y. Yechieli, O. Sivan] La distribution de la salinité des eaux souterraines salées et relation avec les conditions hydrauliques des aquifères et aquitards: exemples d'Israël The effect of separation by aquitard layers on the distribution of saline groundwater in coastal aquifers has been demonstrated in two Israeli coastal aquifers: the Mediterranean and the Dead Sea aquifers. There is vertical separation in the Dead Sea area, even where the clayey aquitard layers are <1m thick, exhibited by large differences in hydraulic head (2-5m), salinity (TDS of 50-340g/L) and chemical composition (e.g. Na/Cl range 0.28-0.55). Similar features are found in the Mediterranean coastal aquifer, where the separating aquitard layers are thicker (∼5-10m). Here, the different subaquifers host fresh and saline groundwater of different ages (tritium and 14C ages range from tens to thousands of years), as well as different chemical compositions. This high resolution of results can be obtained only by drilling without fluids; otherwise, the spatial information may lead to incorrect representation of the studied aquifer. This is especially important in saline systems where only partial flushing occurs and, thus, large variations in salinity and chemical composition are expected. The main factors controlling the salinity of groundwater in subaquifers in coastal aquifers are their connection to the sea or saline lakes, existence of brines, salinization and flushing rates, and separation by aquitard layers. Springer-Verlag, 2010 Israel nationallicence Salt-water/freshwater relations nationallicence Hydrochemistry nationallicence Separation by aquitards nationallicence Yechieli Y. Geological Survey of Israel, 30 Malkhei Israel Street, 95501, Jerusalem, Israel aut Sivan O. Department of Geological & Environmental Sciences, Ben Gurion University of the Negev, 84105, Beer-Sheva, Israel aut Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 71-81 1431-2174 19:1<71 2011 19 10040 https://doi.org/10.1007/s10040-010-0646-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-010-0646-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yechieli Y. Geological Survey of Israel, 30 Malkhei Israel Street, 95501, Jerusalem, Israel aut NATIONALLICENCE 700 1- Sivan O. Department of Geological & Environmental Sciences, Ben Gurion University of the Negev, 84105, Beer-Sheva, Israel aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 71-81 1431-2174 19:1<71 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer