Naslov
Nitrate transport modelling in the Varaždin alluvial aquifer

Autori
Karlović, Igor ; Marković, Tamara ; Larva, Ozren

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Making groundwater in the Danube region visible / Brenčič, Mihael ; Žvab Rožič, Petra ; Torkar, Anja - Ljubljana : Slovenian Committee of International Association of Hydrogeologists, 2022, 29-29

ISBN
978-961-95960-0-5

Skup
5th IAH CEG Conference "Making groundwater in the Danube Region visible"

Mjesto i datum
Rogaška Slatina, Slovenija, 05.10.2022. - 07.10.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nitrate ; transport ; numerical modelling ; Varaždin aquifer ; Croatia

Sažetak
The Varaždin alluvial aquifer is located in the Drava River valley in NW Croatia, providing drinking water for approximately 170, 000 inhabitants of the Varaždin County. In the last decades, this important water resource has become contaminated with nitrate above threshold limit of 50 mg/L. Within this work, nitrate transport is modelled in the area upstream of the Varaždin City, which is predominantly under agricultural activities. The future evolution of nitrate concentrations is predicted for scenarios that differ from each other in nitrate input from different land use classes. The modelling results indicated longer mean residence time in deeper parts of the aquifer (MRT>10 years), allowing slow progradation of contamination plume towards the main wellfield Bartolovec located downstream of the study area. The scenario analysis demonstrated that groundwater contamination with nitrate occurs mainly from agricultural sources, so the management of the agricultural practices seems to be of critical importance towards the remediation of the groundwater quality in the Varaždin aquifer.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA