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Spatial Variations of Radiocarbon in the Coastal Aquifer of Israel—Indicators of Open and Closed Systems

Published online by Cambridge University Press:  18 July 2016

Debbie Bruce ,
Gerald M Friedman ,
Aaron Kaufman  and
Yoseph Yechieli
Debbie Bruce
Affiliation:
Geological Survey of Israel, Jerusalem 95501, Israel. Email: [email protected]. Brooklyn College and Graduate School of the City University of New York, c/o Northeastern Science Foundation, P.O. Box 746, Troy, New York 12181-0746, USA
Gerald M Friedman
Affiliation:
Brooklyn College and Graduate School of the City University of New York, c/o Northeastern Science Foundation, P.O. Box 746, Troy, New York 12181-0746, USA
Aaron Kaufman
Affiliation:
Weizmann Institute of Science, Rehovot 76100, Israel
Yoseph Yechieli
Affiliation:
Geological Survey of Israel, Jerusalem 95501, Israel. Email: [email protected].
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Abstract

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The spatial variation in radiocarbon concentration was studied in the Coastal Aquifer of Israel. Lower concentrations were found in the western section of the aquifer (55–70 pMC) as compared to the eastern section (80–100 pMC). Since no correlation was found between the tritium and radiocarbon values, these variations could not simply be explained by a difference in ages, or by a difference in the degree of old calcite dissolution as similar δ13C values were found throughout the aquifer. The results are best explained when viewing the differences in 14C values within the same coastal aquifer, where the eastern section of the aquifer is a more open system and the western section is a more closed system. In general, the age of the groundwater in the coastal aquifer was found to be less than 50 years old (14C >55 and measurable tritium).

Type
II. Our ‘Wet’ Environment
Information
Radiocarbon , Volume 43 , Issue 2B: Proceedings of the 17th International Radiocarbon Conference (Part 2 of 3), Conference Editors: Israel Carmi, Elisabetta Boaretto , 2001 , pp. 783 - 791
Copyright
Copyright © 2001 by the Arizona Board of Regents on behalf of the University of Arizona 

References

Clark, ID, Fritz, P. 1997. Environmental isotopes in hydrogereology. New York: Lewis Publishers, p 112–89, 200–31.Google Scholar
Dorr, H, Sonntag, C, Regenberg, W. 1987 Field study on the initial 14C content as a limiting factor in 14C groundwater dating. IAEA-SM-299/38: 73–86.Google Scholar
Geyh, MA, Wirth, K. 1980. 14C ages of confined groundwater from the Gwandu Aquifer, Sokoto Basin, northern Nigeria. Journal of Hydrology 48:281–8.Google Scholar
Gvirtzman, G, Shachnai, E, Bakler, N, Ilani, S. 1984. Stratigraphy of the Kurkar Group (Quarternary) of the Coastal Plain of Israel. Curr. Res. Geo. Surv. Isr. : 70–82.Google Scholar
Issar, A. 1968. Geology of the central coastal plain of Israel. Israel Journal of Earth-Sciences 17:16–29.Google Scholar
Leaney, FW, Allison, GB. 1986. Carbon-14 and stable isotope data for an area in the Murray Basin: its use in estimating recharge. Journal of Hydrology 88:129–45.Google Scholar
Levin, I, Munnich, KO, Weiss, W. 1980. The effect of anthropogenic CO2 and 14C sources on the distribution of 14C in the atmosphere. Radiocarbon 22(2):379–91.Google Scholar
Mercado, A, Avron, M, Kahanovitch, Y. 1975. Groundwater salinity in the coastal plain – chloride inventory and assessment of future salinity trends. Tahal Report 01/75/88. In Hebrew.Google Scholar
Mook, WG. 1980. Carbon-14 in hydrogeological studies. In: Fritz, P, Fontes, J-Ch, editors. Handbook of environmental isotope geochemistry. Volume 1. The terrestrial environment. New York: Elsevier Scientific Publishers. p 49–74.Google Scholar
Nativ, R, Weisbrod, N. 1994. Hydraulic connections among subaquifers of the Coastal Plain Aquifer, Israel. Groundwater 32(6):997–1007.Google Scholar
Rosensaft, M, Ecker, A, Levitte, D, Ilani, S, Shimron, A, Rosenfeld, A, Sneh, A, Bein, A. 1997. The three-dimensional configuration and lithological composition of the coastal aquifer and the unsaturated zone, Israel. Geological Survey of Israel Report GSI/15/95.Google Scholar
Wigley, TML. 1975 Carbon 14 dating of groundwater from closed and open systems. Water Resources Research 11(2):324–8.CrossRefGoogle Scholar
Yechieli, Y, Ronen, D, Kaufman, A, Carmi, I. 1994. New tritium data in waters of the Dead Sea area. Isr. J. Earth Sciences 43:213–20.Google Scholar