Proljetne promjene sedimentoloških i biogeomorfoloških karakteristika plaže Lojišće (Dugi Otok)

master's thesis

• Title (english): Spring changes of sedimentological and biogeomorphological characteristics of the Lojišće beach (Dugi otok Island)
• Author: Iva Vrabac
• Mentor: Kristina Pikelj (mentor)
• Committee member: Kristina Pikelj (predsjednik povjerenstva)
• Committee member: Darko Tibljaš (član povjerenstva)
• Committee member: Maja Martinuš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2022-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Sediment plaže Lojišće na Dugom otoku čini slabo šljunkoviti sitnozrnati pijesak. U
njegovom sastavu dominiraju karbonatni minerali (kalcit, magnezijski kalcit i aragonit) s
preko 95%. Utvrđeno je da su čestice pijeska biogenog porijekla iz mora. S obzirom na
orijentaciju, pretpostavlja se da na plažu djeluju valovi juga koji morski pijesak talože na
obali. Udio sediment u banketima posidonije u prosjeku je nešto veći od 400 kg/m3 što
dokazuje značajnu povezanost banketa i sedimenta u morfologiji plaže. Tijekom proljetnih
mjeseci praćenja, nisu uočene značajne promjene u morfologiji plaže što se pripisuje
izostanku značajnijih epizoda olujnih juga. Najveće promjene tijekom proljetnih mjeseci
bile su unutar pola metra.

Abstract (english)

The sediment of the Lojišće beach on the Dugi otok Island consists of slightly gravelly,
fine-grained sand. Its composition is dominated by carbonate minerals (over 95%): calcite,
magnesium calcite and aragonite. The sand particles are of biogenic origin originating
from the sea. Considering its orientation, it is assumed that the beach is affected by Sirocco
waves, which deposit sea sand on the beach. The proportion of sediment in posidonia
banquettes is on average slightly higher than 400 kg/m3, which proves the significant
connection between banquettes and sediment in the morphology of the beach. During the
spring months of the monitoring, no significant changes in the morphology of the beach
were observed, which is attributed to the absence of significant stormy episodes of
Scirocco waves. The highest changes during the spring months were within half a meter.

• Keywords: plaža Lojišće; sitnozrnati pijesak; Posidonia oceanica; banketi; geomorfologija
• Keywords (english): Lojišće beach; fine-grained sand; Posidonia ocenica; banquettes; geomorphology
• Language: croatian
• URN:NBN: urn:nbn:hr:217:810276
• 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: 2024-09-23
• Created on: 2023-01-30 11:19:01