Počet záznamů: 1

From earthquake swarm to a mainshock-aftershocks: the 2018 activity in West Bohemia/Vogtland

SYSNO ASEP	0536049
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	From earthquake swarm to a mainshock-aftershocks: the 2018 activity in West Bohemia/Vogtland
Tvůrce(i)	Bachura, Martin (GFU-E)_ORCID Fischer, T. (CZ) Doubravová, Jana (GFU-E)_{ORCID, RID} Horálek, Josef (GFU-E)_{ORCID, RID}
Zdroj.dok.	Geophysical Journal International - ISSN 0956-540X Roč. 224, č. 3 (2021), s. 1835-1848
Poč.str.	14 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	seismicity and tectonics ; earthquake source observations ; statistical seismology
Vědní obor RIV	DC - Seismologie, vulkanologie a struktura Země
Obor OECD	Volcanology
CEP	GA18-05053S GA ČR - Grantová agentura ČR
Způsob publikování	Omezený přístup
Institucionální podpora	GFU-E - RVO:67985530
UT WOS	000606573600022
EID SCOPUS	85099632278
DOI	10.1093/gji/ggaa523
Anotace	In earthquake swarms, seismic energy is released gradually by many earthquakes without a dominant event, which offers detailed insight into the processes on activated faults. The swarm of May 2018 that occurred in West Bohemia/Vogtland region included more than 4000 earthquakes with ML =(0.5, 3.8&x3009 x232A, and its character showed significant changes during the two weeks duration: what started as a pure earthquake swarm ended as a typical main shock-aftershock sequence. Based on precise double-difference relocations, four fault segments differing in strikes and dips were identified with similar dimensions. First, two segments of typical earthquake swarm character took place, and at the end a fault segment hosting a main shock-aftershock sequence was activated. The differences were observable in the earthquakes spatio-temporal evolutions (systematic versus disordered migration of the hypocentres), b-values (>1.3 for the swarm, <1 for the main shock-aftershocks), or the smoothness of seismic moment spatial distribution along the fault plane. Our findings can be interpreted by local variations of fault rheology, differential stress and/or smoothness of the faults surface, possibly related to the crustal fluids circulating along the fault plane and their interplay with the seismic cycle.
Pracoviště	Geofyzikální ústav
Kontakt	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Rok sběru	2022
Elektronická adresa	https://academic.oup.com/gji/article/224/3/1835/5955445

Počet záznamů: 1