Geomorfološka i hidrološka obilježja manjih ponornica - primjeri s kordunskog krša

master's thesis

• Title (english): Geomorphological and hydrological characteristics of small sinking streams- examples from Kordun karst
• Author: Ena Rekić
• Mentor: Neven Bočić (mentor)
• Mentor: Ivan Čanjevac (mentor)
• Committee member: Marija Gligora Udovič (predsjednik povjerenstva)
• Committee member: Neven Bočić (član povjerenstva)
• Committee member: Ivan Čanjevac (član povjerenstva)
• Committee member: Blanka Cvetko Tešović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Granter: University of Zagreb; Faculty of Science; (Department of Geography); Zagreb
• Defense date and country: 2020-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Kordunski krš predstavlja dodirno područje dviju megageomorfoloških regija: Panonske
ne-krške i Dinarske krške. Otjecanjem vode dolazi do oblikovanja reljefa i pojave kontaktnog
krša. Cilj rada bio je geološko-geomorfološkim i hidrološkim analizama istražiti uvjete
nastanka i razvoja manjih ponornica i njihovih drenažnih bazena na četiri primjera. Geološkogeomorfološkim
analizama istraživan je utjecaj geološke građe podloge na reljef koji je
ponornica svojim tokom oblikovala. Proučavani su stijenski odnosi nepropusnih i propusnih
naslaga, njihova visinska raspodjela, prostorni raspored te rasjedi i pukotinski sustavi. Na tako
malom području istraživanja utvrđena su tri morfogenetska tipa reljefa : fluviodenudacijski,
fluviokrški i krški. Hidrokemijska svojstva vode ovise o geološkoj građi podloge stoga su na
primjeru Dunjak izmjereni fizikalno-kemijski parametri vode koji su odgovarali vrijednostima
očekivanim za karbonatnu podlogu. Izmjeren je protok vode prije i nakon ulaska u krški
vodonosnik koji je ukazivao na hidrološki period s malo padalina što je imalo utjecaj na
koncentracije mjerenih fizikalno-kemijskih parametara vode.

Abstract (english)

Kordun karst represents the meeting belt of two megageomorphological regions: Panonian
non-karst and Dinaric karst. Water runoff has an impact on relief formation, resulting in
contact karst formation. Research aim of this thesis was to establish conditions of formation
and development of small sinking streams and their watersheds on four examples. Geologicalgeomorphological
analysis were used to explore impact of bedrock geology on relief. The
relationship between permeable and impermeable rocks, hypsometry, spatial distribution,
faults and fracture systems were analyzed. In such a small area of research, 3 types of genetic
relief were established: fluvioerosional, fluviokarstic and karstic. Hydrochemical water
characteristics depend on bedrock geology, therefore, measured physico-chemical properties
of Dunjak sinking stream were corresponding to values expected for carbonate bedrock. The
water flow was measured before and after entering the karst aquifer, which indicated a
hydrological period with little precipitation that had an impact on the concentrations of the
measured physico-chemical parameters of the water.

• Keywords: geomorfologija; hidrologija; kontaktni krš; Kordun; ponornica; drenažni bazen
• Keywords (english): geomorphology; hydrology; contact karst; Kordun; sinking stream; watershed
• Language: croatian
• URN:NBN: urn:nbn:hr:217:953213
• Study programme: Title: Enviromental Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra struke znanosti o okolišu (magistar/magistra struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-10-07 09:08:47