Uloga vrtača u napajanju krškog vodonosnika

master's thesis

• Title: Uloga vrtača u napajanju krškog vodonosnika : diplomski rad
• Title (english): The role of sinkholes in the recharge of karst aquifers : master’s thesis
• Author: Andre Širol
• Mentor: Jelena Parlov (mentor)
• Committee member: Jelena Parlov (predsjednik povjerenstva)
• Committee member: Bojan Matoš (član povjerenstva)
• Committee member: Dario Perković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Geology and Geological Engineering); Zagreb
• Defense date and country: 2018-10-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Sliv izvora Gradole nalazi se u središnjoj Istri. Ukupna površina sliva iznosi 159,6 km2 od čega 85 % površine pokrivaju karbonatne stijene, a 15 % flišne naslage. U karbonatnim stijenama razvijen je velik broj vrtača koje imaju važnu ulogu u napajanju vodonosnika. Vrtače omogućuju izravnu vezu površinske vode s podzemljem, stoga je njihovo istraživanje ključno u shvaćanju hidroloških odnosa u slivu. U ovom radu istraživanje vrtača temelji se na morfometrijskim i prostornim analizama. Početna pretpostavka morfometrijskih analiza je da se različitosti u litološkim i tektonskim obilježjima stijena manifestiraju u različitim morfometrijskim obilježjima vrtača. Analiza tih obilježja pokazala je da na području sliva Gradole ne postoji čvrsta veza između pojava vrtača i pojedinih kronostratigrafskih jedinica. Također, u istraživanju krških vodonosnika važno je izdvojiti zone različitog stupnja okršenosti, a to se postiže prostornim analizama vrtača. U slivu izvora Gadole najveća okršenost javlja se u krednim karbonatnim stijenama uz kontakt s flišnim naslagama paleogenske starosti. Na temelju provedene prostorne analize vrtača i iz nje proizašlih rezultata, izračunati su koeficijenti efektivne infiltracije u slivu izvora Gradole.

Abstract (english)

The Gradole spring basin area is located in central Istria. The total surface of the basin area is 159.6 km2, 85 % of which is made up of carbonate rocks and 15 % of flysch deposits. A large number of sinkholes developed in carbonate rocks. Sinkholes are of big importance in aquifer recharge as they enable direct flow of surface water to the underground. Sinkhole research is based upon morphometric and spatial analysis. The initial assumption of morphometric analysis is that differences in lithological and tectonic properties of rocks show up as differences in morphometric properties. Analysis done in this study showed that in the Gradole spring basin area there is no strong connection between the sinkhole phenomenon and individual chronostratigraphic units. Likewise, research of karst aquifers should include spatial analysis to differentiate between zones of different degree of karstification. In the Gradole spring basin the area of greatest karstification is located in Cretaceous carbonate rocks along border with Paleogene flysch. Based on the spatial analysis and it’s results, the coefficients of effective infiltration of the Gradole spring basin area were calculated.

• Keywords: vrtače; krški vodonosnik; izvor Gradole; prostorna analiza; morfometrijska analiza; koeficijent efektivne infiltracije
• Keywords (english): sinkholes; karst aquifer; Gradole spring; spatial analysis; morphometric analysis; coefficient of effective infiltration
• Language: croatian
• URN:NBN: urn:nbn:hr:169:121894
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Hydrogeology and engineering geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-11-08 12:52:26