Frequency-dependent body-Q and coda-Q in Karlıova Triple Junction and its vicinity, eastern Turkey

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dc.contributor.authorDemirci, Alper
dc.date.accessioned2025-01-27T19:35:02Z
dc.date.available2025-01-27T19:35:02Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractA dataset obtained from six broadband stations of 111 small- to moderate-sized local events that occurred between 2010and 2018 was analyzed to reveal the frequency-dependent seismic body (body-Q) and coda (coda-Q) wave attenuation characteristicsof three tectonic branches of the Karlıova Triple Junction: the Varto Fault Zone (VFZ), North Anatolian Fault Zone (NAFZ), and EastAnatolian Fault Zone. The magnitude range was between 2.8 and 6.1 with shallow (<10 km) focal depths. The maximum station-eventdistance was selected as not to exceed 120 km. Frequency-dependent Qc functions were determined using the single back-scatteringmodel with four lapse time lengths (20, 30, 40, 50 s) while the extended coda normalization method was performed to estimate the bodywave attenuation functions for seven central frequencies varying from 1.5 Hz to 18 Hz. The minimum and maximum Qp values were7 at 1.5 Hz for the VFZ and 739 at 18 Hz for the NAFZ, respectively. Qs values were observed between a minimum of 26 for VFZ andmaximum of 1259 for NAFZ. Additionally, coda-Q results show a strong lapse time dependency between Q0 and n; exhibiting a decreasein n by an increase in Q0, with an ascending lapse time. Comparing the three subregions of the Karlıova Triple Junction, VFZ appears tohave a significantly higher attenuation for all Q types and Qs/Qp ratios while the NAFZ has relatively low attenuation.
dc.identifier.doi10.3906/yer-1903-2
dc.identifier.endpage919
dc.identifier.issn1300-0985
dc.identifier.issn1303-619X
dc.identifier.issue6
dc.identifier.startpage902
dc.identifier.trdizinid336320
dc.identifier.urihttps://doi.org/10.3906/yer-1903-2
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/336320
dc.identifier.urihttps://hdl.handle.net/20.500.12428/16808
dc.identifier.volume28
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofTurkish Journal of Earth Sciences
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_TRD_20250125
dc.subjectFizik
dc.subjectUygulamalı
dc.subjectJeokimya ve Jeofizik
dc.titleFrequency-dependent body-Q and coda-Q in Karlıova Triple Junction and its vicinity, eastern Turkey
dc.typeArticle

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