Utjecaj dužobalne struje na karakteristike sedimenta pješčane plaže Duće

undergraduate thesis

• Title (english): Impact of longshore drift on sediment characteristics of Duće sandy beach
• Author: Lea Lelas
• Mentor: Kristina Pikelj (mentor)
• Committee member: Kristina Pikelj (predsjednik povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Committee member: Maja Martinuš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2021-09-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Interdisciplinary Natural Sciences; Marine Science

Abstract

Plaža Duće, smještena u Južnoj Dalmaciji, pješčana je plaža akumulirana duž-obalnim transportom sedimenta rijeke Cetine, koji dolazi vjerojatno iz paleogenskih karbonatnih klastita donjeg toka. Dominantni valovi mora nastali puhanjem juga, prilaženjem obali uzrokuju generiranje duž-obalne struje koja prenosi sediment od ušća sjevero-zapadno. U sklopu ovog rada analizirano je 12 uzoraka sedimenta iz segmenata plaže koji se nalaze među perima. Cilj je bio utvrditi postoje li razlike u karakteristikama sedimenta uzrokovanih duž-obalnim transportom u plitkom intertajdalu idući od ušća Cetine do kraja pjeskovitog dijela obale. Analizom uzoraka određen je njihov granulometrijski sastav, udio karbonatne komponente te su svi uzorci mikroskopirani. Pokazalo se da generalni smjer duž-obalnog transporta je u smjeru sjevero-zapada, ali da različit položaj obale, tj. segmenata plaža utječe na drugačiji smjer kretanja struje na tim mikro-lokacijama. Također, da dužina pera i njihova isturenost prema moru doprinose ovome efektu.

Abstract (english)

Duće Beach, located in Southern Dalmatia, is a sandy beach accumulated along the coast by longshore drift of the Cetina River sediment, which probably comes from the Paleogene carbonate clastites in the drainage basin of its lower course. When dominant waves, created by wind blowing from SE, approach to the coastline they produce longshore current that transports sediment from river mouth to NW direction. As a part of this study, 12 sediment samples taken from various segments of the Duće beach located between the groins were analyzed. The aim was to determine whether there are differences in sediment characteristics caused by longshore transport in the shallow intertidal going for the mouth of the river to the end of the sandy part of the coast. The analysis of the samples determined their grain size and distribution, the proportion of the carbonate component and a general share of biogenic particles. It turned out that the general direction of longshore transport is in the north-west direction, but small differences in orientation of the beach segments as well as the length of groins affects direction of current flow in these micro-locations.e, duž-obalni transport, sediment, Cetina

• Keywords: plaža; Duće; duž-obalni transport; sediment; Cetina
• Keywords (english): beach; Duće; longshore drift; sediment; Cetina River
• Language: croatian
• URN:NBN: urn:nbn:hr:217:329463
• Study programme: Title: Undergraduate university study of Geology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-09-06 09:36:13