Određivanje i analiza visinskih pomaka na Mareografskoj postaji Bakar

master's thesis

• Title (english): Determination and Analysis of Height Displacements at the Bakar Tide-Gauge Station
• Author: Barbara Galić
• Mentor: Mladen Zrinjski (mentor); MBZ: 244863
• Mentor: Antonio Tupek (komentor); MBZ: 367241
• Committee member: Mladen Zrinjski (predsjednik povjerenstva); MBZ: 244863
• Committee member: Antonio Tupek (član povjerenstva); MBZ: 367241
• Committee member: Đuro Barković (član povjerenstva); MBZ: 160935
• Granter: University of Zagreb; Faculty of Geodesy; (Institute for Applied Geodesy); (Chair of Instruments); Zagreb
• Defense date and country: 2024-06-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Geodesy; Applied Geodesy

Abstract

Određivanje visinskih pomaka Zemljine površine jedna je od najzahtjevnijih geodetskih zadaća zbog konstantnog utjecaja prirodnih procesa. Rezultat takvog djelovanja je promjena visinskog položaja trajno stabiliziranih točaka. U Republici Hrvatskoj se visinski sustavi temelje na mareografskim mjerenjima koja određuju srednje razine mora kao referentne plohe. Mareografi, uređaji za mjerenje razine mora, igraju ključnu ulogu u ovom procesu. Cilj ovoga diplomskog rada je odrediti i analizirati visinske pomake na mareografskoj postaji u Bakru, s posebnim naglaskom na ulogu mareografa u visinskim sustavima. Analizirane su visinske promjene kroz određeno vremensko razdoblje. Detaljno je objašnjena funkcija, značaj i način rada mareografa te je dan uvid u postojeće stanje predmetne mareografske postaje i okolnih visokih repera. Dan je pregled visinskih sustava u Hrvatskoj još od mreže Austrijskog preciznog nivelmana (APN), s naglaskom na mrežu II. nivelmana visoke točnosti (IINVT). Opisana je geodetska izmjera i primijenjena metodapreciznoga geometrijskog nivelmana. Prikazana je računska obrada izvornih podataka te izjednačenje primjenom softvera Java Applied Geodesy 3D (JAG3D). Analizirane su visinske razlike između identičnih repera u pojedinim epohama mjerenja. Na kraju je dana usporedba konačnih visina repera. Svi rezultati i detaljan računski postupak, priloženi su u okviru ovoga rada.

Abstract (english)

Determining height displacements of Earth's surface is one of the most demanding geodetic tasks due to the constant influence of different natural processes. The result of such action is a change in the elevation of permanently stabilized points. In the Republic of Croatia, the height systems are based on tide-gauge measurements that determine the mean sea levels as reference points. Mareographs, devices for measuring sea level, play a key role in this process. The aim of this thesis is to investigate the height displacements at the Bakar tide-gauge station, with special emphasis on the role of tide-gauges in height systems. The height changes over a certain time were analyzed. The function, significance and way of working of the tide-gauge are explained in detail, and an insight into the existing condition of the tide gauge station and the surrounding high benchmarks is provided. Height systems in Croatia since the precise levelling network of the Austro-Hungarian Monarchy (APN) have been reviewed, with an emphasis on the II. levelling network of high accuracy (IINVT). Geodetic surveying and the application of the precise geometric leveling method are described. The computational processing of the original data and adjustment in the JAG3D software are also presented. Height differences between identical benchmarks in certain epochs of measurement were analyzed. At the end, a comparison of the final heights of the benchmarks is given. All results and detailed calculation procedure are attached within this work.

• Keywords: Ključne riječi: mareograf; Bakar; visinski sustavi; geometrijski nivelman; visinski pomak.
• Keywords (english): Keywords: tide-gauge; Bakar; height systems; geometric levelling; height displacement.
• Language: croatian
• URN:NBN: urn:nbn:hr:256:639513
• Study programme: Title: Geodesy and Geoinformatics; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geodezije i geoinformatike (magistar/magistra inženjer/inženjerka geodezije i geoinformatike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-06-21 14:43:57