Seizmičnost na području Hrvatske u razdoblju 2016.-2020. godine

master's thesis

• Title (english): Seismicity in Croatia in the period 2016-2020
• Author: Tereza Švigir
• Mentor: Iva Dasović (mentor)
• Committee member: Iva Dasović (predsjednik povjerenstva)
• Committee member: Katarina Jeličić (član povjerenstva)
• Committee member: Dalibor Paar (član povjerenstva)
• Committee member: Maja Planinić (član povjerenstva)
• Committee member: Danijel Belušić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2024-01-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract

Prema Hrvatskom katalogu potresa, tijekom petogodišnjeg razdoblja između 2016. i 2020. godine u Hrvatskoj i neposrednoj okolici lociran je 19721 potres, od čega je zabilježeno 20 glavnih potresa lokalne magnitude veće ili jednake 4.0. Seizmički najaktivnija bila je južna Hrvatska, na čijem je području locirano više od 11000 potresa, uz 17 potresa s ML ≥ 4.0. Drugi najaktivniji dio bilo je područje središnje i sjeverne Hrvatske, na kojem su zabilježena i dva najjača potresa u Hrvatskoj tijekom promatranog razdoblja. Najsnažniji potres, momentne magnitude MW = 6.4 (ML = 6.2), zabilježen je nedaleko grada Petrinje 29. prosinca 2020. godine. Drugi najsnažniji potres, magnitude ML = 5.3, zabilježen je devet mjeseci ranije, u području Grada Zagreba, 22. ožujka 2020. godine. Uz prostornu analizu potresa, provedena je i vremenska analiza potresa, uključujući usporedbu pojavnosti glavnih potresa na području Hrvatske s Poissonovim procesom kojeg koristimo za opis rijetkih događaja. Magnituda potpunosti deklasteriranog Hrvatskog kataloga potresa, određena metodama MAXC i MBS za razdoblje 2016. – 2020. godine, za područje Hrvatske i njezine okolice iznosi Mc = 1.2. Pripadni koeficijent b (nagib pravca) Gutenberg-Richterovog zakona ima vrijednost 0.91. Za četiri područja u Hrvatskoj, istočna Hrvatska, središnja i sjeverna Hrvatska, zapadna Hrvatska i južna Hrvatska, provedena je i detaljnija analiza seizmičnosti, određena je magnituda potpunosti kataloga regije te su procijenjeni koeficijenti Gutenberg-Richterovog zakona.

Abstract (english)

According to the Croatian Earthquake Catalog, during the five-year period from 2016 to 2020, a total of 19721 earthquakes occured in Croatia and its immediate surrounding areas, with 20 main events with local magnitude ML ≥ 4.0. The most seismically active region was southern Croatia, where over 11000 events were located, including 17 events with magnitude ML ≥ 4.0. The second most active region was central and northern Croatia, where two of the strongest events in Croatia happened during the observed period. The strongest event, with moment magnitude MW = 6.4 (ML = 6.2), occurred near the town of Petrinja on December 29, 2020. The second strongest event, with magnitude ML = 5.3, happened nine months earlier in the vicinity of Zagreb on March 22, 2020. In addition to spatial earthquake analysis, a temporal analysis of earthquakes was performed, including a comparison of the occurrence of main events in Croatia with a Poisson process used to describe rare events. The magnitude of completeness for the declustered Croatian earthquake catalog, determined using the MAXC and MBS methods for the period between 2016 and 2020, in the Croatia and its immediate vicinity, is Mc = 1.2. The associated coefficient b (slope of the curve) of the Gutenberg-Richter law is found to be 0.91. Furthermore, a detailed analysis of seismicity was conducted for regions of Croatia (eastern Croatia, northern and central Croatia, western Croatia and southern Croatia), determining the magnitude of completeness for each region's catalog and calculating the corresponding Gutenberg-Richter coefficients.

• Keywords: seizmičnost; Hrvatska; katalog potresa; magnituda potpunosti; GutenbergRichterov zakon
• Keywords (english): seismicity; Croatia; earthquake catalog; magnitude of completeness; GutenbergRichter law
• Language: croatian
• URN:NBN: urn:nbn:hr:217:909518
• Study programme: Title: The Integrated University Undergraduate and Graduate Programme in Physics and Computer Science Education; specializations in: Physics and informatics; Course: Physics and informatics; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: sveučilišni magistar edukacije fizike i informatike (sveučilišni magistar edukacije fizike i informatike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-04-05 12:12:14