Hydrogeochemical conditions of submarine and terrestrial karst sulfur springs in the Northern Adriatic

Šušmelj, Kaja (avtor), Čenčur Curk, Barbara (avtor), Kanduč, Tjaša (avtor), Rožič, Boštjan (avtor), Verbovšek, Timotej (avtor), Vreča, Polona (avtor), Žagar, Klara (avtor), Žvab Rožič, Petra (avtor)

Submarine springs near Izola, in the Northern Adriatic Sea, appear in funnel-shaped depressions and smell strongly of sulfur. Along the Mediterranean coast there are many submarine karst springs containing brackish or fresh water, but submarine sulfur springs are not particularly common. Three submarine sulfur springs and one terrestrial sulfur spring were investigated to better understand the water properties, water–rock interaction within the aquifer, and to explore the origin of the spring water. Groundwater and seawater samples were also collected for comparison. Based on the geological setting, physicochemical parameters, hydrogeochemical data, and stable isotope data (δ$^{18}$O, δ$^2$H, δ$^{13}$C$_{DIC}$, δ$^{34}$S$_{SO4}$, δ$^{18}$O$_{SO4}$), we can affirm that (1) the large concentration of seawater in the submarine springs samples is due to sampling challenges; (2) springs recharge from precipitation where confined karst aquifers outcrop; (3) deep water circulation is indicated; (4) redox conditions can provide a suitable environment for bacterial reduction of the marine or organic sulfate to the odorous H$_2$S; (5) geological data suggests that the coals beneath the alveolinic-nummulitic limestones are the source of sulfur. A multi-parameter and interdisciplinary approach has proven important in assessing submarine sulfur springs affected by seawater input.

• Jezik: Angleški jezik
• Ključne besede: terrestrial and submarine sulfur springs, karst groundwater, hydrogeochemistry, stable isotopes, Slovenia
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 18 str.
• Številčenje: Vol. 83, iss. 7, art. 214
• PID: 20.500.12556/RUL-156152
• UDK: 55
• ISSN pri članku: 1866-6280
• DOI: 10.1007/s12665-024-11476-7
• COBISS.SI-ID: 190295043
• Datum objave v RUL: 10.05.2024

Gradivo je del revije

• Naslov: Environmental Earth sciences
• Založnik: Springer Nature
• ISSN: 1866-6280
• COBISS.SI-ID: 1683797

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.