EPJ Web of Conferences 24, 03004 (2012) DOI: 10.1051/epjconf/ 20122403004 C Owned by the authors, published by EDP Sciences - SIF , 2012 Isotopic tracing of groundwater at Zitn´ˇ y ostrov (SW Slovakia) P. P. Povinec1∗,Z.Zeniˇ ˇsova´2,R.Breier1, M. Richtarikov´ a´1 and A. Sivoˇ 1 1 Comenius University, Faculty of Mathematics, Physics and Informatics, Department of Nuclear Physics and Biophysics - Mlynsk´a dolina, 842 15 Bratislava, Slovakia 2 Comenius University, Faculty of Natural Sciences, Department of Hydrogeology - Mlynsk´adolina, 842 15 Bratislava, Slovakia Abstract Geostatistical analysis of experimental isotope data has been car- ried out with the aim to study spatial variations in the distribution of water isotopes and radiocarbon in groundwater of Zitn´ˇ y ostrov (Rye Is- land), which is the largest reservoir (about 10 Gm3) of groundwater in the Central Europe. Subsurface water profiles showed enriched δ18O levels at around 20 m water depth and depleted values below 30 m, which are similar to those observed in the Danube River. The core of the subsurface 14C profile represents contemporary groundwater with 14C values above 80 pMC. 1. Introduction Stable and radioactive isotopes have been extensively used as environmental tracers during the last decades to study the water cycle, to better understand the origin, dynamics and interconnections of the different elements of the hydrologic cycle. It has been possible to study the present day distribution ∗E-mail:
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