GIS analiza ponikva hrvatskog dijela Ćićarije

master's thesis

• Title (english): GIS anlaysis of dolines in the Croatian part of Ćićarija Mt.
• Author: Natalia Licul
• Mentor: Neven Bočić (mentor)
• Committee member: Neven Bočić (predsjednik povjerenstva)
• Committee member: Nenad Buzjak (član povjerenstva)
• Committee member: Ivan Šulc (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geography); Zagreb
• Defense date and country: 2024-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: INTERDISCIPLINARY AREAS OF KNOWLEDGE; Geography

Abstract

Ponikve su jedan od najkarakterističnijih krških oblika pa se smatraju i dijagnostičkim oblikom za krš. Njihov prostorni raspored i gustoća posljedica su nekoliko čimbenika. U radu je provedena analiza gustoća ponikava po razredima nadmorske visine, nagiba padina, orijentacije padina, vertikalne raščlanjenosti reljefa i geološkoj podlozi terena. Podaci o lokacijama ponikava preuzeti su vektoriziranjem s topografskih karata 1: 25 000, a opći morfometrijski podaci reljefa generirani su iz digitalnog modela reljefa rezolucije 5 x 5 m. Detaljnije su analizirana tri izdvojena područjaDEM-om razlučivosti1x1mizrađenim LiDAR-skim snimanjem. Na temelju dobivenih oboda ponikava izračunate su reljefni atributi (površina, opseg, volumen i dubina) te analiza prostornih statistika (gustoća ponikava, indeks okršenosti). Dominantni pravac pružanja ponikava je SZ-JI. Na istraživanompodručju ukupno su identificirane 14 857 ponikve. Izračunata je visoka gustoća od 37, 81 pon/km². Najveća gustoća ponikava je na vapnencima i dolomitima, a ponikve su raspršene kroz cijelo istraživano područje. Analiza upućuje na povezanost između općih morfometrijskih karakteristika reljefa i pojave te gustoće ponikvi.

Abstract (english)

Dolines are one of the most characteristic karst formations, often considered diagnostic features of karst landscapes. Their spatial distribution and density are influenced by several factors. This paper presents an analysis of doline density based on various parameters such as elevation classes, slope gradient, slope aspect, vertical dissection of the relief, and geological substrate. Data on the locations of dolines were obtained by vectorizing 1:25,000 scale topographic maps, while general morphometric relief data were generated from a digital elevation model with a 5 x 5 m resolution. Three specific case studies were analyzed in more detail with a 1x1 m resolution DEM, which was produced using LiDAR scanning. Based on the identified doline boundaries, relief attributes such as area, perimeter, volume, and depth were calculated, along with an analysis of spatial statistics, including doline density and karst index. The dominant orientation of dolines is NW-SE, with a total of 14,857 dolines identified. Doline's density rate is high of 37.81 dolines/km². The highest doline density is found on limestones and dolomites, and the dolines are scattered throughout the whole study area. The analysis suggests a correlation between general morphometric relief characteristics and the occurrence and density of dolines.

• Keywords: krš; ponikve; Ćićarija; GIS
• Keywords (english): karst; dolines; Ćićarija mt.; GIS
• Language: croatian
• URN:NBN: urn:nbn:hr:217:541995
• Study programme: Title: Geography; specializations in: Physical Geography with Geoecology, Spatial Planning and Regional Development, Heritage and Tourism, Geographic Information Systems, Course research; Course: Geographic Information Systems; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geografije (magistar/magistra geografije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-08 07:41:44