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Guerzoni, S.; Molinaroli, E.; Chester, R. |
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Saharan dust inputs to the W. Mediterranean Sea: depositional patterns, geochemistry and sedimentological implications |
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1997 |
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Deep-Sea Res |
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44 |
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3-4 |
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631-654 |
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THL @ luqianxue.zhang @ Guerzoni1997 |
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61 |
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Author |
Vengosh, A.; Spivack, A.J.; Artzi, Y.; Ayalon, A. |
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Title |
Geochemical and boron, strontium, and oxygen isotopic constraints on the origin of the salinity in groundwater from the Mediterranean coast of Israel |
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Journal Article |
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1999 |
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Water Resources Research |
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35 |
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6 |
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1877-1894 |
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In order to identify the origin of the salinity and formation of saline plumes in the central part of the Mediterranean coastal aquifer of Israel, we determined the elemental and boron, strontium, and oxygen isotopic compositions of fresh and brackish groundwater (C1 up to 1500 mg/L). We distinguish between two key anthropogenic sources: (1) sewage effluents used for irrigation with high Na/C1, SO4/C1, and B/C1 ratios and low Br/C1 ratios relative to seawater ratios, low ;5•B values (0-10%o) and high ;5•80 values (>-4%0); and (2) imported water from the Sea of Galilee that is artificially
recharged tothe aquifer with high Br/C1 (3 x 10 -3) and ;5•80 values (-1%o) and a low 87Sr/86Sr ratio of 0.70753. The brackish groundwater from the saline plumes have relatively low Na/C1 ratios (0.5-0.8) and high Ca/Mg, Mg/C1, and Ca/(SO 4 q- HCO3) (> l) ratios relative to seawater ratios; marine SO4/C1 and Br/C1 ratios;5•B values of 24.8-49.9%0; 18 87 86 ;50 of -2.95%0 to -4.73%0; and Sr/ Sr ratios of 0.708275-0.708532. The composition of most of the investigated groundwater from the saline plumes differs from those of the 87 86 anthropogenic sources, imported water, fresh uncontaminated groundwater (Sr/ Sr of 0.70866, ;5•B of 20-30%o), and saline water from the adjacent Eocene aquitard. Only in ß 18 areas of artificial recharge does local groundwater have high Br/C1 and ;50 values that are typical to the Sea of Galilee. The linear relationships between chloride and most of the ions, including Band Sr, the relatively high ;5•B (>30%0) and low ;5•80 (<-4%0) values, and the chemical signature of the saline plumes (e.g., marine Br/C1 and SO4/C1 ratios), suggest that (1) mixing processes control the chemical composition of the brackish water within the aquifer, and (2) the saline postulated end-member has a chemical composition that resembles modified seawater with a marine and higher ;5•B values, and a 87Sr/86Sr ratio of <0.7083. We propose that most of the salinization phenomena and the formation of saline plumes in the inner parts of the coastal aquifer are derived from upconing of underlying natural saline water bodies and enhanced by overexploitation and draw-down of the overlying fresh groundwater. |
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Wiley Online Library |
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THL @ luqianxue.zhang @ vengosh1999geochemical |
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62 |
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Demirel, Z.; Güler, C. |
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Hydrogeochemical evolution of groundwater in a Mediterranean coastal aquifer, Mersin-Erdemli basin (Turkey) |
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2006 |
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Environmental geology |
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49 |
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3 |
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477-487 |
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In this study, hydrogeologic and hydrochemical information from the Mersin-Erdemli groundwater system were integrated and used to determine the main factors and mechanisms controlling the chemistry of groundwaters in the area and anthropogenic factors
presently affecting them. The PHREEQC geochemical modeling demonstrated that relatively few
phases are required to derive water chemistry in the area. In a broad sense, the reactions responsible for the hydrochemical evolution in the area fall into four categories: (1)
silicate weathering reactions; (2) dissolution of salts; (3) precipitation of calcite, amorphous silica and kaolinite; (4) ion exchange. As determined by multivariate statistical
analysis, anthropogenic factors show seasonality in the area where most contaminated waters related to fertilizer and fungicide applications that occur during early summer season. |
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THL @ luqianxue.zhang @ demirel2006hydrogeochemical |
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63 |
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Tziritis, E. |
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Groundwater and soil geochemistry of the Eastern Kopaida region (Beotia, central Greece) |
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2009 |
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Open Geosciences |
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1 |
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2 |
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219-226 |
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Versita |
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THL @ luqianxue.zhang @ tziritis2009groundwater |
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65 |
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Johnson, J.S.; Baker, L.A.; Fox, P. |
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Geochemical transformations during artificial groundwater recharge: soil–water interactions of inorganic constituents |
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1999 |
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Water research |
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33 |
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1 |
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196-206 |
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Elsevier |
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THL @ luqianxue.zhang @ johnson1999geochemical |
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66 |
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