Fault modeling around southern Anatolia using the aftershock sequence of the Kahramanmaras earthquakes (Mw=7.7 and Mw=7.6) and an interpretation of potential field data

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dc.authoridBuyuksarac, Aydin/0000-0002-4279-4158
dc.authoridAlkan, Hamdi/0000-0003-3912-7503
dc.contributor.authorBuyuksarac, Aydin
dc.contributor.authorBektas, Ozcan
dc.contributor.authorAlkan, Hamdi
dc.date.accessioned2025-01-27T20:24:30Z
dc.date.available2025-01-27T20:24:30Z
dc.date.issued2024
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractOn February 6, 2023, southeastern Turkiye experienced devastating doublet earthquakes (Mw = 7.7 and Mw = 7.6) with a series of aftershocks along the East Anatolian Fault Zone. The mainshocks were followed by similar to 15,000 aftershocks mainly distributed in the NNE-SSW direction, including similar to 400 events with an Mw >= 4.0 in the following 30 days. Although many moderate to large earthquakes have occurred in the historical and instrumental periods of this region, these double earthquakes and their aftershocks majorly impacted lives and released great seismic energy. In this study, we interpret the gravity-magnetic data and the epicenter and hypocenter distributions of the aftershocks to correlate the tectonic structures and the active fault zones. The results of potential field anomalies reveal that the rotational anomalies in the southwestward direction are associated with the tectonic structure of Anatolia. Results show that shallow aftershocks are associated with high-gravity anomalies, whereas deeper aftershocks are associated with low-gravity anomalies and they become shallower in places where gravity values increase. After the derivative transformations are applied to the magnetic anomalies, it is seen that the faults and regions of magnetic discontinuity are in good agreement. Consequently, the findings on gravity, magnetic anomalies and aftershock sequences demonstrate that the first mainshock occurred in the unbroken segment of the East Anatolian Fault Zone.
dc.description.sponsorshipWe thank the General Directorate of the Turkish Mineral Research and Exploration Agency for providing aeromagnetic and gravity data.
dc.description.sponsorshipWe thank the General Directorate of the Turkish Mineral Research and Exploration Agency for providing aeromagnetic and gravity data.
dc.identifier.doi10.1007/s11600-023-01192-4
dc.identifier.endpage2996
dc.identifier.issn1895-6572
dc.identifier.issn1895-7455
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85174295179
dc.identifier.scopusqualityQ2
dc.identifier.startpage2985
dc.identifier.urihttps://doi.org/10.1007/s11600-023-01192-4
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22248
dc.identifier.volume72
dc.identifier.wosWOS:001084845300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Int Publ Ag
dc.relation.ispartofActa Geophysica
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectAftershock
dc.subjectEarthquake
dc.subjectPotential field data
dc.subjectSouthern Anatolia
dc.titleFault modeling around southern Anatolia using the aftershock sequence of the Kahramanmaras earthquakes (Mw=7.7 and Mw=7.6) and an interpretation of potential field data
dc.typeArticle

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