Hidrogeokemijske karakteristike termalnih voda Hrvatskog zagorja

master's thesis

• Title (english): Hydrogeochemical characteristic of thermal waters in Hrvatsko zagorje
• Author: Lara-Beatta Ivanić
• Mentor: Hana Fajković (mentor)
• Committee member: Hana Fajković (predsjednik povjerenstva)
• Committee member: Katarina Gobo (član povjerenstva)
• Committee member: Marijan Kovačić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2020-02-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Geotermalna energija je energija sadržana u Zemljinoj unutrašnjosti. Hidrotermalni sustavi se razvijaju na mjestima gdje meteorska voda, procjeđivanjem kroz tektonske pukotine, dolazi u kontakt s izvorom topline te se konvekcijskim strujanjima vraća prema površini. Za potrebe diplomskog rada proučavala se i analizirala termalna voda na području Hrvatskog zagorja (Jezerčice, Krapinskih, Sutinskih, Stubičkih, Šemničkih, Tuheljskih i Varaždinskih toplica). Pomoću analitičkih metoda omjera stabilnih izotopa, kemijskog sastava voda, udjela aniona i kationa te mjerenja temperatura vode odredio se kemijski sastav, tip mineralizacije te prihranjivanje vodonosnika. Proučavanjem dosadašnjih istraživanja te uvidom u bušotinska izvješća utvrdile su se stijene vodonosnici i njihova podloga na pilot području DARLINGe – Danube Region Leading Geothermal Energy projekta. Unutar termalnih voda utvrđeno je trošenje karbonata i silikata te je omjer stabilnih izotopa utvrdio prihranjivanje oborinskom vodom. Određeno većinskim ionskim sastavom, termalna voda Varaždinskih toplica pripada NaCaMg-HCO3SO4 tipu mineralizacije. Stubičke toplice pripadaju CaMgNa-HCO3SO4 tipu mineralizacije, dok vode Tuheljskih, Krapinskih, Sutinskih, Šemničkih toplica te Jezerčice pripadaju CaMg-HCO3 tipu mineralizacije.

Abstract (english)

Geothermal energy is the energy contained within Earth's mantle and core. Hydrothermal systems develop at places where meteoric water, percolating through tectonic discontinuities, comes into contact with a heath source and flows back to the surface by convection currents. The main object of this study was to analize thermal waters of Hrvatsko zagorje (mainly Jezerčica, Krapina, Sutina, Stubica, Šemnica, Tuhelj and Varaždin spa water). Analytical methods such as stable isotope ratio, chemical composition of thermal waters, cation and anion content and temperature measurements were used to determine the type of mineralisation, actual chemical composition of the thermal waters and the aquifer conservation. Studying past research and well reports concluded from which type of rocks are the aquifers made and from which type of rock is the base made in the pilot area of DARLINGe – Danube Region Leading Geothermal Energy project. Analytical methods concluded that both dissolution of carbonates as well as silicate weathering. Stable isotope ratio concluded rainwater recharge of thermal waters. With cation and anion content was concluded that Varaždin spa has NaCaMg-HCO3SO4 type of mineralisation. Stubice spa has CaMgNa-HCO3SO4 type of mineralisation and Tuhelj, Krapina, Šemnica, Sutina spa and Jezerčica have CaMg-HCO3 type of mineralisation.

• Keywords: geotermalna energija; kemijski sastav; stabilni izotopi; termalna voda; anioni; kationi; temperatura; trijaski dolomiti
• Keywords (english): geothermal energy; chemical composition; stable isotopes; thermal water; anions; cations; temperature; triassic dolomites
• Language: croatian
• URN:NBN: urn:nbn:hr:217:985460
• Study programme: Title: Graduate university study of Geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2022-02-17
• Created on: 2020-07-21 11:07:06