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Updated historical earthquake catalog of İzmir region (western Anatolia) and its importance for the determination of seismogenic source

For this purpose, it has been attempted to determine new geological, seismological and environmental data by examining a large number of original sources, records and old international earthquake catalogs, other than the existing national catalogs used in seismicity studies in Turkey. In this context, a new local and updated historical earthquake catalog was prepared for İzmir and its immediate vicinity. The data obtained from the records show that the maximum intensity of some destructive historical earthquakes in the İzmir region was X. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2021 30 779-805 http journals.tubitak.gov.tr earth TÜBİTAK Research Article doi 10.3906 yer-2101-14 Updated historical earthquake catalog of İzmir region western Anatolia and its importance for the determination of seismogenic source 1 2 2 3 1 2 2 4 5 Çiğdem TEPE Hasan SÖZBİLİR Semih ESKİ Ökmen SÜMER Çağlar ÖZKAYMAK 1 The Graduate of Natural and Applied Sciences Applied Geology Dokuz Eylül University İzmir Turkey 2 Department of Geological Engineering Faculty of Engineering Dokuz Eylul University Tınaztepe Campus İzmir Turkey 3 Earthquake Research and Implementation Center of Dokuz Eylül University İzmir Turkey 4 Department of Geological Engineering Faculty of Engineering Afyon Kocatepe University Afyonkarahisar 5 Earthquake Research and Implementation Center of Afyon Kocatepe University Afyonkarahisar Turkey Received 19.01.2021 Accepted Published Online 07.09.2021 Final Version 30.10.2021 Abstract Although destructive earthquakes have not occurred in the instrumental period except for the 30 October 2020 Samos earthquake Mw 6.6 the records show that there were significant earthquakes that caused great destruction in İzmir and its surroundings in the historical period. However it is not yet clear which faults are causative for these earthquakes affecting İzmir and its surroundings. For this purpose it has been attempted to determine new geological seismological and environmental data by examining a large number of original sources records and old international earthquake catalogs other than the existing national catalogs used in seismicity studies in Turkey. In this context a new local and updated historical earthquake catalog was prepared for İzmir and its immediate vicinity. The data obtained from the records show that the maximum intensity of some destructive historical earthquakes in the İzmir region was X. This means that the active faults in İzmir and its immediate vicinity have the potential to generate