Naslov
Petrinja earthquake aftershocks – locations, focal mechanisms and related Coulomb stress change

Autori
Herak, Marijan ; Herak, Davorka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE / Josip Atalić ; Marta Šavor Novak ; Petra Gidak ; Ivo Haladin ; Marina Frančić Smrkić ; Maja Baniček ; Iva Dasović ; Marija Demšić ; Mario Uroš ; Tomislav Kišiček - Zagreb : Građevinski fakultet Sveučilišta u Zagrebu, 2023, 27-28

Skup
The second Croatian Conference on Earthquake Engineering (2CroCEE

Mjesto i datum
Zagreb, Hrvatska, 22.03.2023. - 24.03.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Petrinja earthquake, aftershocks, focal mechanism solutions, Coulomb stress change

Sažetak
The devastating Petrinja earthquake of 29 December 2020 (Mw = 6.4) was followed by a large number of aftershocks. In the first six months of the sequence we were able to hand-pick over a quarter of million earthquake phase onset times, corresponding to 13897 locatable events. Analyses of the Coulomb stress change on optimally oriented strike-slip and dip-slip faults following the mainshock rupture, reveals that a large majority of aftershocks occurred in the volumes characterised by the Coulomb static stress increase, whereas the areas where the effective stress decreased remained mostly quiet. The distribution and preferred strike directions of strike-slip and reverse faulting inferred by the Coulomb stress transfer analyses are also in good agreement with individual focal mechanisms.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika

POVEZANOST RADA