Padinski procesi na obalnom klifu - uzroci i posljedice

master's thesis

• Title (english): Slope processes on coastal cliff - causes and consequences
• Author: Iva Đonlić
• Mentor: Kristina Pikelj (mentor)
• Committee member: Kristina Pikelj (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: 2021-06-14, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Predmet istraživanja ovog diplomskog rada je obalni klif Duilovo koji je formiran u eocenskom flišu, a nalazi se u urbanoj zoni grada Splita. U proteklih jedanaest godina (2012.-2021.), prikupljane su fotografije te je 2018. obavljeno snimanje dijela klifa nakon odrona, nakon čega su metodom SfM fotogrametrije izrađeni digitalni modeli površine, kako bi se utvrdili prisutni padinski procesi, njihovi uzroci i posljedice. Analizom slika uočeno je dominantno mehaničko trošenje lapora uzrokovano procesima vlaženja i sušenja (slaking), površinskog otjecanja (spiranje i brazdanje) i procjeđivanja (sapping). Ovi površinski procesi trošenja u kombinaciji sa periodima intenzivnih padalina dovode do masovnog kretanja materijala na padini, tj. pojave odrona i klizišta. Proces osipavanja je inicijalno uzrokovan procesom slakinga, a trošeni materijal premješta se gravitacijski i u bazi klifa formira konusna tijela koja su periodički erodirana valovima. Analizom modela razlike (DoD) za područje odrona i slika osipavanja zapažena je direktna ugroza infrastrukture i objekata na rubnim dijelovima vrha klifa, te potencijalna opasnost za kupače na plaži u njegovom podnožju.

Abstract (english)

The subject of research carried out for this thesis is the coastal cliff Duilovo, which was formed in the Eocene flysch, and is located in the urban zone of the city of Split. In the past eleven years (2012-2021), photographs were collected and in 2018 a partof the cliff was surveyed after the landslide, after which digital surface models were made by SfM photogrammetry. Models were then used to determine the present slope processes, their causes and consequences. Image analysis showed that dominant weathering of marl is caused by the processes of wetting and drying (slaking), surface runoff (sheet wash and rilling) and seepage (sapping). These weathering processes, in combination with periods of intense rainfall lead to mass movement of material on the slope, ie rockfalls and landslides. Surface disintegration is initially caused by the slacking process. Weathered material which is produced moves gravitationally and forms talus cones at the base of the cliff that are periodically eroded by waves. The analysis of the difference model (DoD) for the landslide area and repeat photography images indicate that slope processes pose a direct threat to the infrastructure and facilities at the edge of the clifftop and are a potential danger for swimmers on the beach at its base.

• Keywords: obalni klif; padinski procesi; fliš; trošenje
• Keywords (english): coastal cliff; slope processes; flysch; weathering
• Language: croatian
• URN:NBN: urn:nbn:hr:217:963035
• Study programme: Title: Graduate university study of Environmental 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: 2022-06-14
• Created on: 2022-04-29 09:45:10