graduation thesis
Vesna Bertoncelj (Author), Dušan Žagar (Mentor), Davide Bonaldo (Co-mentor), Matjaž Ličer (Co-mentor)

Abstract

Due to the growing awareness of potential threats affecting coastal cities, a thorough knowledge of all the factors causing an increase in sea level is demanded in order to provide accurate forecasting of coastal flooding, proper designing of the coastal defences and for implementing adequate countermeasures. In the present study we hypothesize that with the correct selection of the methods we will be able to characterise low-frequency sea level oscillations, namely subinertial oscillations, in the Mediterranean Sea. Several methods were applied % wavelet analysis, spectral analysis, moving-periodogram analysis and rotary spectral analysis % to the observations of a particular storm event in the Adriatic Sea and the long-term tide gauge measurements available for the rest of the Mediterranean basin. With the combination of different processing techniques to measured data the preliminary results provide the period of subinertial oscillation, an information on the locations where the signal was evidenced as well as the identification of the events in which these oscillations exhibit special intensity. This sets the ground for a further investigation of signal propagation throughout the Mediterranean basin, as well as for characterisation of the mechanisms triggering the process, also in the framework of a climate change perspective.

Keywords

graduation thesis;sea surface elevation;low-frequency oscillation;Mediterranean Sea;Adriatic Sea;wavelet analysis;spectral analysis;rotary spectral analysis;moving periodogram analysis;

Data

Language: English
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [V. Bertoncelj]
UDC: 532.5:551.465(262)(043.2)
COBISS: 8523361 Link will open in a new window
Views: 1079
Downloads: 622
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Other data

Secondary language: Slovenian
Secondary title: Nizkofrekvenčna nihanja morske gladine v Sredozemskem morju
Secondary abstract: Zaradi naraščajočega ozaveščanja o morebitnih nevarnostih, ki prizadenejo obalna mesta, je potrebno vedno bolj široko poznavanje vseh dejavnikov, ki povzročajo višanje morske gladine, zaradi natančnejšega napovedovanja poplav obalnih območij, ustreznega načrtovanja obalne zaščite in izvajanja ustreznih protiukrepov. V raziskavi predpostavljamo, da lahko z ustrezno izbiro metod opišemo značilnosti nizkofrekvenčnih nihanj morske gladine, natančneje subinercialnih signalov, v Sredozemskem morju. Pri tem smo uporabili več metod % valčno analizo, spektralno analizo, analizo drsečega periodograma ter rotacijsko spektralno analizo % na merjenih podatkih morske gladine in morskih tokov določenega nevihtnega pojava na Jadranskem morju ter na večletnih merjenih podatkih morske gladine za ostala merilna mesta postaje v Sredozemskem morju. S kombinacijo različnih tehnik, uporabljenih na meritvah nihanja morske gladine, nam prvi rezultati razkrivajo informacije o periodi subinercialnega nihanja, o lokacijah, kjer je bil signal opažen, pa tudi identifikacijo dogodkov, pri katerih je nihanje intenzivnejše. To je izhodišče za nadaljnjo raziskavo širjenja signala po celotnem območju Sredozemskega morja, pa tudi za določanje mehanizmov, ki sprožijo subinercialno nihanje, med drugim tudi v okviru podnebnih sprememb.
Secondary keywords: gradbeništvo;diplomska naloga;UNI;VOI;višina vodne gladine;nizkofrekvenčno nihanje;Sredozemsko morje;Jadransko morje;valčna analiza;spektralna analiza;rotacijska spektralna analiza;analiza drsečega periodograma;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 47 str.
ID: 10949673