Počet záznamů: 1
Fault plane picking from focal mechanisms in reverse faulting stress: Application to the Mw6.9 Boumerdes (Algeria) earthquake sequence
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SYSNO ASEP 0562033 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Fault plane picking from focal mechanisms in reverse faulting stress: Application to the Mw6.9 Boumerdes (Algeria) earthquake sequence Tvůrce(i) Ouyed, R. (DZ)
Boughacha, M. S. (DZ)
Bezzeghoud, M. (PT)
Vavryčuk, Václav (GFU-E) ORCID, RIDČíslo článku 104729 Zdroj.dok. Journal of African Earth Sciences. - : Elsevier - ISSN 1464-343X
Roč. 196, December (2022)Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova focal mechanisms ; fault identification ; fault instability method ; slip angle criterion Vědní obor RIV DC - Seismologie, vulkanologie a struktura Země Obor OECD Volcanology CEP GA22-10747S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora GFU-E - RVO:67985530 UT WOS 000867986800001 EID SCOPUS 85139366079 DOI 10.1016/j.jafrearsci.2022.104729 Anotace Identification of the fault plane from two nodal planes of the focal mechanism is, in general, ambiguous. This problem is commonly solved using other constraints provided by tectonic, geological or seismic studies. In this paper, we evaluate the probability of identifying the fault plane using knowledge of stress field. We employ two alternative methods: (1) the slip angle method (SA), and (2) the highest instability method (IS). First, the efficiency of the methods was tested on synthetic data consisting of focal mechanisms compatible with a reverse stress regime. The tests revealed that the fraction of faults correctly picked by the IS method is higher than that of the SA method, particularly for large noise values. Second, the methods were applied to the aftershocks of the Boumerdes (Algeria) earthquake of May 21, 2003. This application showed that when taking into account the focal solutions for which the fault planes are determined using the IS method with a high probability, we observe consistency between the selected faults and the tectonics of the study area. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S1464343X22002813
Počet záznamů: 1