Türkiye Mw 7.7 Pazarcık and Mw 7.6 Elbistan earthquakes of February 6th, 2023: Contribution of valley effects on damage pattern

dc.authoridMonaco, Paola/0000-0002-1473-158X
dc.authoridkarray, mourad/0000-0002-4891-8473
dc.contributor.authorKarray, Mourad
dc.contributor.authorKarakan, Eyyub
dc.contributor.authorKincal, Cem
dc.contributor.authorChiaradonna, Anna
dc.contributor.authorGul, Tolga Oktay
dc.contributor.authorLanzo, Giuseppe
dc.contributor.authorMonaco, Paola
dc.date.accessioned2024-08-31T07:50:37Z
dc.date.available2024-08-31T07:50:37Z
dc.date.issued2024
dc.departmentEge Üniversitesien_US
dc.description.abstractOn February 6th, 2023, southeastern T & uuml;rkiye was shaken by two catastrophic earthquakes, close to northwestern Syrian border. The first earthquake (Pazarc & imath;k) occurred 45 km west of Gaziantep at 1:17:32 (UTC), with a shallow strike-slip faulting at a depth of approximately 8.6 km and a moment magnitude (MW) of around 7.7. The second event (Elbistan) took place 9 h later, 66 km north-east of Kahramanmaras, city center, also with shallow strike-slip faulting at a depth approximately 7 km and an MW of around 7.6. Turkish authorities reported a death toll of over 59,000 in T & uuml;rkiye and about 8500 in Syria. The destructive effect of the earthquake resulted from widespread strong ground shaking, a rupture length exceeding 300 km, causing collapse of a large number of buildings. The catastrophic destruction of the built environment was accompanied by a range of other earthquake-related effects, including fault ruptures, landslides, and soil liquefaction. The aim of the study is to analyze the distribution of ground motion and their relationships with the observed damages for the two events. Spectral accelerations of key importance were assessed across a large area in the southeastern part of T & uuml;rkiye. Notably, these accelerations were generally much higher than existing design spectra. A significant correlation between the observed concentration of damage and the significant amplification of motion induced by local soil conditions (such as soft soils and valley effects). The distinct tectonic structure of the region could be the main reason for the high amplification in the valleys (associated with basin effects), even at large distances from the epicenter, especially in correspondence with the bidimensional grabentype geological structures. The investigation delved into the analysis of four specific regions in detail: Antakya and Hassa (both in the Hatay province), Kahramanmaras, and Goksun. Notably, the observable valley effects were found to play a significant role and could account for the significant damage observed in these regions.en_US
dc.identifier.doi10.1016/j.soildyn.2024.108634
dc.identifier.issn0267-7261
dc.identifier.issn1879-341X
dc.identifier.scopus2-s2.0-85189937852en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.soildyn.2024.108634
dc.identifier.urihttps://hdl.handle.net/11454/105307
dc.identifier.volume181en_US
dc.identifier.wosWOS:001225455300001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofSoil Dynamics and Earthquake Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz20240831_Uen_US
dc.subjectValley Effecten_US
dc.subjectAmplificationen_US
dc.subjectPazarc & Imath;Ken_US
dc.subjectElbistanen_US
dc.subjectFebruary 6th 2023 T & Uuml;Rkiye Earthquakesen_US
dc.subjectGround Motionen_US
dc.subjectDamage Distributionen_US
dc.titleTürkiye Mw 7.7 Pazarcık and Mw 7.6 Elbistan earthquakes of February 6th, 2023: Contribution of valley effects on damage patternen_US
dc.typeArticleen_US

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