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Isotopic analyses of Zagreb aquifer – Kosnica well field

Barešić, Jadranka; Kovač, Zoran; Parlov, Jelena; Mijatović, Ivona; Krajcar Bronić, Ines; Sironić, Andreja; Borković, Damir (2019) Isotopic analyses of Zagreb aquifer – Kosnica well field. In: Popić, Jelena; Coha, Ivana; Krajcar Bronić, Ines; Knežević Medija, Željka, (eds.) Zbornik radova Dvanaestog simpozija Hrvatskog društva za zaštitu od zračenja. Zagreb, Hrvatsko društvo za zaštitu od zračenja, pp. 257-262 .

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Abstract

This paper presents results of isotopic investigation (tritium activity, A3H, stable isotope composition δ2H and δ18O) of water samples from Zagreb aquifer – Kosnica well field, the future main well field of the Zagreb County. Research was conducted within the IAEA TC project An environmental isotope investigation of the groundwater-surface water interactions at the regional well field Kosnica in the area of the city of Zagreb, CRO7001. Results obtained from 10 piezometers (ground water) and surface water (Sava, Domovinski most) showed that stable isotope values are within very narrow range both for δ2H and δ18O: -64.3 ‰ – (-57.0) ‰ and 9.6 ‰ – (-8.7) ‰, respectively and fit within the LMWL: y = 7.7x + 3.7 (Local Meteoric Water Line) obtained from precipitation collected within one-year period from Meteorological Station Grič – Zagreb. A3H of precipitation showed natural values between 4,5 and 10, 4 TU. The maximum A3H of 168,6 TU observed in the Sava River due to discharge of cooling water from Nuclear Power Plant Krško (30 km upstream) was reflected in piezometer nearest to the Sava River (Mp-5) with 2-month delay and smaller intensity (A3H = 32.3 TU), indicating A 3H as excellent tracer for the Zagreb aquifer studies.

Item Type: Conference or workshop item published in conference proceedings (UNSPECIFIED)
Uncontrolled Keywords: Kosnica; Zagreb aquifer; 3H; 2H; 18O
Subjects: NATURAL SCIENCES > Geology
NATURAL SCIENCES > Interdisciplinary Natural Sciences
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
An environmental isotope investigation of the groundwater-surface water interactions at the regional well field Kosnica in the area of the city of ZagrebJadranka BarešićCRO7001IAEA
Depositing User: Ines Krajcar Bronić
Date Deposited: 23 Apr 2019 10:42
URI: http://fulir.irb.hr/id/eprint/4496

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