Naslov
Regional Isotopic Signatures of Groundwater in Croatia

Autori
Brkić, Željka ; Kuhta, Mladen ; Hunjak, Tamara ; Larva, Ozren

Izvornik
Water (2073-4441) 12(7) (2020); 1983, 27

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Stable isotopes ; Tritium activity ; Spatial distribution of an approximate groundwater age ; Karst aquifer system ; Porous aquifer system ; Croatia
(stable isotopes ; tritium activity ; spatial distribution of an approximate groundwater age ; karst aquifer system ; porous aquifer system ; Croatia)

Sažetak
Tracer methods are useful for investigating groundwater travel times and recharge rates and analysing impacts on groundwater quality. The most frequently used tracers are stable isotopes and tritium. Stable isotopes of oxygen (δ18O) and hydrogen (δ2H) are mainly used as indicators of the recharge condition. Tritium (3H) is used to estimate an approximate mean groundwater age. This paper presents the results of an analysis of stable isotope data and tritium activity in Croatian groundwater samples that were collected between 1997 and 2014 at approximately 100 sites. The composition of the stable isotopes of groundwater in Croatia originates from recent precipitation and is described using two regional groundwater lines. One of them is applied to groundwater accumulated in the aquifers in the Pannonian part of Croatia and the other is for groundwater accumulated in the Dinaric karst of Croatia. The isotope content shows that the studied groundwater is mainly modern water. A mix of sub-modern and modern water is mostly accumulated in semi-confined porous aquifers in northern Croatia, deep carbonate aquifers, and (sub)thermal springs

Izvorni jezik
Engleski

Znanstvena područja
Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA