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High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia
Journal of Geophysical Research: Solid Earth, 130 (2025), 1; e2024JB029107. https://doi.org/10.1029/2024JB029107
Žilić, Iva; Causse, Mathieu; Vallée, Martin; Markušić, Snježana

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Institucijski repozitorij: Repozitorij Prirodoslovno-matematičkog fakulteta

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Žilić, I., Causse, M., Vallée, M. i Markušić, S. (2025). High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia. Journal of Geophysical Research: Solid Earth, 130. (1). doi: 10.1029/2024JB029107

Žilić, Iva, et al. "High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia." Journal of Geophysical Research: Solid Earth, vol. 130, br. 1, 2025. https://doi.org/10.1029/2024JB029107

Žilić, Iva, Mathieu Causse, Martin Vallée i Snježana Markušić. "High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia." Journal of Geophysical Research: Solid Earth 130, br. 1 (2025). https://doi.org/10.1029/2024JB029107

Žilić, I., et al. (2025) 'High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia', Journal of Geophysical Research: Solid Earth, 130(1). doi: 10.1029/2024JB029107

Žilić I, Causse M, Vallée M, Markušić S. High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia. Journal of Geophysical Research: Solid Earth [Internet]. 16.01.2025. [pristupljeno 26.03.2025.];130(1). doi: 10.1029/2024JB029107

I. Žilić, M. Causse, M. Vallée i S. Markušić, "High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia", Journal of Geophysical Research: Solid Earth, vol. 130, br. 1, Siječanj 2025. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:955843. [Citirano: 26.03.2025.]

Za citiranje koristite ovu mrežnu adresu: https://urn.nsk.hr/urn:nbn:hr:217:955843
Podaci o radu
Naslov (engleski)High Stress Drop and Slow Rupture During the 2020 MW6.4 Intraplate Petrinja Earthquake, Croatia
AutorIva Žilić
AutorMathieu Causse
AutorMartin Vallée
AutorSnježana Markušić
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Geofizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Geofizika
Seizmologija i fizika unutrašnjosti Zemlje
Sažetak (engleski)
Here we analyze the rupture process of the December 29th, 2020 MW6.4 Petrinja earthquake (Croatia), the largest event instrumentally recorded in this area characterized by a moderate strain-rate intraplate setting. We use foreshocks and aftershocks, recorded at more than 80 broadband stations located 70 km to 420 km from the earthquake, as empirical Green's functions (EGFs) to separate source effects from propagation and local site effects. First, we deconvolve the mainshock P-wave time windows... Više from the EGFs in the frequency domain to obtain the corner frequency (fc). Spectral analysis based on the Brune's source model reveals a large stress drop of 24 MPa. Next, by deconvolving the Love waves in the time domain, we calculate the Apparent Source Time Functions (ASTFs). We find that the average duration of the source is ~5 s, with no significant directivity effects, indicating a bilateral rupture. To extract physical rupture parameters such as rupture velocity, slip distribution and rise time, we deploy two techniques: (1) Bayesian inversion and (2) backprojection onto isochrones of ASTFs. Both techniques show a low rupture velocity (40-50% of the shear wave velocity) and a rupture length of less than 10 km, i.e. much less than would typically be expected for a magnitude 6.4 earthquake. This apparent anticorrelation between stress drop and rupture velocity may be attributed to the complex and segmented fault system characteristic of immature intraplate settings. Sakrij dio sažetka
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeZavršna verzija rukopisa prihvaćena za objavljivanje (postprint)
Naslov časopisaJournal of Geophysical Research: Solid Earth
Brojčani podacivol. 130, br. 1, e2024JB029107
BPC1000 USD
p-ISSN2169-9356
e-ISSN2169-9313
DOIhttps://doi.org/10.1029/2024JB029107
URN:NBNurn:nbn:hr:217:955843
Datum objave publikacije2025-01-16
ProjektŠifra: 04-UBS-U-0002/22-90
Naziv (hrvatski): Geofizičko-seizmološka istraživanja potresom ugroženih područja u RH i razvoj atenuacijskih relacija predviđanja seizmičkog gibanja tla
Naziv (engleski): Investigation of seismically vulnerable areas in Croatia and seismic ground motion assessment
Kratica: CRONOS
Voditelj: Snježana Markušić
Pravna nadležnost: Hrvatska
Financijer: Kraljevina Norveška
ProjektŠifra: IP-2020-02-3531
Naziv (hrvatski): Procjena seizmičkog rizika građevina kulturne baštine u Hrvatskoj
Naziv (engleski): Seismic risk assessment of cultural heritage buildings in Croatia
Kratica: SeisRICHerCRO
Voditelj: Snježana Markušić
Pravna nadležnost: Hrvatska
Financijer: Hrvatska zaklada za znanost
Linija financiranja: Research Projects
URL dokumentahttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JB029107
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
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Datum i vrijeme pohrane2025-01-21 15:17:11
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