Isotopie tracing of groundwater at Žitný ostrov (SW Slovakia)

P. P. Povinec^1*, Z. Ženišová², R. Breier¹, M. Richtáriková¹ and A. Šivo¹

¹ Comenius University, Faculty of Mathematics, Physics and Informatics, Department of Nuclear Physics and Biophysics - Mlynská dolina, 842 15 Bratislava Slovakia
² Comenius University, Faculty of Natural Sciences, Department of Hydrogeology - Mlynská dolina, 842 15 Bratislava, Slovakia

^* E-mail: povinec@fmph.uniba.sk.

Published online: 04 April 2012

Abstract

Geostatistical analysis of experimental isotope data has been carried out with the aim to study spatial variations in the distribution of water isotopes and radiocarbon in groundwater of Žitný ostrov (Rye Island), 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 80pMC.