The 2017 Lesvos (Midilli) earthquake (Mw 6.3): Earthquake hazard implications from source modeling, numerical waveform simulation with regional 1D velocity structure and static stress field

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dc.authorid0000-0002-5395-8349
dc.contributor.authorKaragoz, Ozlem
dc.contributor.authorTan, Onur
dc.date.accessioned2026-02-03T12:02:40Z
dc.date.available2026-02-03T12:02:40Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe investigate the earthquake hazard of Lesvos Island and the Turkish coast, considering the source mechanism and rupture propagation of the June 12, 2017 Lesvos (Midilli) mainshock (Mw 6.3), its numerical waveform simulations with regional new 1D deep velocity structures, relocated seismicity, and crustal stress loading due to the destructive earthquakes. The teleseismic body waveform inversion indicates that the strike, dip, and rake of the fault are 127 degrees, 47 degrees, and -97 degrees, respectively. The depth is 9 km, and the seismic moment is 3.4 x 10(25) dyne cm. The mainshock ruptures a 12 x 15 km(2) area with a maximum 1.9 m slip and 3.4 MPa average stress drop. The previous rupture models are evaluated with simulated broadband (0.05-10 Hz) ground motions based on the discrete wavenumber method, considering shallow soil amplifications. The S-wave velocity models used in the simulations between the mainshock and stations are defined with the multiple-filter method. Our bilateral rupture propagation model gives better fits for the waveform arrivals and Fourier spectrum. The waveforms' frequency with the highest horizontal amplitude is similar to 3 Hz, which agrees with the soil fundamental frequency in Vrissa village. It is concluded that the damage in Vrissa is caused by the soil structure, not rupture propagation. The earthquake clusters in the north and south of Lesvos agree with a right-lateral synthetic shear if the Psara-Lesvos and Agia-Paraskevi faults are considered the principal displacement zone of a SW-NE right-lateral strike-slip shear zone. The results infer the possibility of continuing the earthquake hazard for Lesvos Island and the western coast of T & uuml;rkiye.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [118Y003]
dc.description.sponsorshipDELL-Tower Workstation Precision [TUBITAK-3001-118Y003]
dc.description.sponsorshipThis study is supported by the Scientific and Technological Research Council of Turkiye (TUBITAK) 3001 Program with project no 118Y003. All earthquake waveform simulations are carried out on DELL-Tower Workstation Precision T7820 2xSilver 4114 (20 cores, 40 threads) , provided by the project TUBITAK-3001-118Y003.
dc.identifier.doi10.1016/j.pce.2025.104007
dc.identifier.issn1474-7065
dc.identifier.issn1873-5193
dc.identifier.scopus2-s2.0-105009335640
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.pce.2025.104007
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34805
dc.identifier.volume140
dc.identifier.wosWOS:001524772600002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofPhysics and Chemistry of the Earth
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subject1D numerical simulation
dc.subjectEarthquake hazards
dc.subjectEarthquake source model
dc.subjectSite amplification
dc.subjectSurface wave group velocity dispersion
dc.subjectWestern Turkiye
dc.titleThe 2017 Lesvos (Midilli) earthquake (Mw 6.3): Earthquake hazard implications from source modeling, numerical waveform simulation with regional 1D velocity structure and static stress field
dc.typeArticle

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