Seizmički reziduali određeni iz teleseizmičkih podataka na području Dinarida i jugozapadnog dijela Panonskog bazena

master's thesis

• Title: Seizmički reziduali određeni iz teleseizmičkih podataka na području Dinarida i jugozapadnog dijela Panonskog bazena : diplomski rad
• Title (english): Travel-time residuals determined from teleseismic data in the area of the Dinarides and the southwest part of the Pannonian basin : master’s thesis
• Author: Klaudia Jurković
• Mentor: Franjo Šumanovac (mentor)
• Committee member: Franjo Šumanovac (predsjednik povjerenstva)
• Committee member: Jasna Orešković (član povjerenstva)
• Committee member: Davor Pavelić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Geophysical Exploration and Mine Surveying); Zagreb
• Defense date and country: 2017-10-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Područje istraživanja obuhvaća Dinaride i jugozapadni dio Panonskog bazena. Preko Međunarodnog seizmološkog centra – ISC Bulletin prikupljeni su podaci o dalekim potresima tijekom 2014. i 2015. godine. Odabrano je ukupno 107 dalekih potresa s epicentralnom udaljenošću od 30° do 95° od središta rasporeda potresa te magnitudom većom od 6.0 prema Richteru. Daleki potresi su registrirani na 40 permanentnih seizmičkih stanica iz Hrvatske, Slovenije, Bosne i Hercegovine, Crne Gore, Srbije i Mađarske. Podaci na stanicama prikupljeni su preko Orfeus arhive i Seizmološke službe Republike Hrvatske. Cilj rada je dobivanje seizmičkih reziduala, određenih iz teleseizmičkih podataka, koji služe kao ulazni podaci za seizmičku tomografiju. Inverzijom tih podataka može se konstruirati geološki model na dodiru Afričke i Euroazijske ploče. Metoda slaganja tragova korištena za izračunavanje reziduala za svaku postaju u odnosu na globalni referentni model brzina ak135. Postoje različiti rasporedi reziduala, ovisno o distrbuciji po azimutu. Rezultati pokazuju kako su za Vanjske Dinaride karakteristični raniji dolasci, ukazujući na materijale velikih brzina, a za Panonski bazen i Unutarnje Dinaride karakteristični su kasniji nailasci zbog malih brzina materijala.

Abstract (english)

The study area covers the Dinarides and southwestern part of the Pannonian basin. The data about teleseismic events were collected from the International Seismological Centre (ISC) Bulletin for a period from year 2014 to 2015. A set of 107 teleseismic events were selected in the 30-95° epicentral distance range from the centre of the seismic station array and with the magnitude greater than 6.0 according to the Richter. Teleseismic events were recorded on 40 seismological stations in Croatia, Slovenia, Bosnia and Herzegovina, Montenegro, Serbia and Hungary. Dataset on seismic stations were collected from the ORFEUS database and Croatian Seismological Survey database. The aim of the study was to obtain travel-time residuals based on teleseismic data, that are used as input for teleseismic tomographic inversion. By inversion of this data, the geological model at the contact of African and Euroasian plate is constructed. The adaptive stacking technique is used for calculating relative resiudals at each station for the selected earthquake, in relation to the global ak135 velocity model. There are different residual patterns depending on azimuthal distribution of the events. The results show that the External Dinarides are characterized by early arrivals pointing to high velocity materials, while the Pannonian basin and Internal Dinarides are characterized by late arrivals caused by low velocity materials.

• Keywords: Dinaridi; JZ dio Panonskog bazena; daleki potresi; reziduali; metoda slaganja tragova
• Keywords (english): Dinarides; SW part of the Pannonian basin; teleseismic events; travel-time residuals; adaptive stacking technique
• Language: croatian
• URN:NBN: urn:nbn:hr:169:791978
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Hydrogeology and engineering geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-05-08 11:55:42