Shear-wave velocity model of the Sivas City (inner eastern, Türkiye) using Rayleigh wave ellipticity inversion controlled by 2D microgravity modeling

Basit Öğe Kaydı
dc.authorid0000-0002-3930-5464
dc.authorid0000-0002-9046-1227
dc.contributor.authorBektas, Ozcan
dc.contributor.authorBuyuksarac, Aydin
dc.contributor.authorSaritepe, Halil Erdim
dc.contributor.authorOnal, Kemal Mert
dc.contributor.authorCanbaz, Oktay
dc.contributor.authorEyisuren, Onur
dc.contributor.authorPamuk, Eren
dc.date.accessioned2026-02-03T12:02:59Z
dc.date.available2026-02-03T12:02:59Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe change in duration, amplitude, and frequency content of the earthquake ground motion as it passes through the rock and ground environment is referred to as the local ground effect. Impedance differences between bedrock and soil, as well as the dynamic behavior of soils, can amplify this effect. The geometry of both dense and loose soil layers must be known to accurately define soil-structure interaction and properly assess how soil behavior affects a structure during an earthquake. Local ground effects are known to play a significant role in structural damage during earthquakes. In basin-like environments, however, studies based on foundation and sub-base depth often lack sufficient information, making it difficult to identify problems associated with basin effects. It is not appropriate to provide construction-related information, especially in environments with a basin structure like Sivas, without determining the bedrock or solid ground conditions. This study aimed at determining the bedrock/seismic foundation depth for the central settlement of Sivas and defining the basin structure, involved large-scale microgravity measurements. The study area was modeled in three dimensions using the gravity data obtained. Long-term microtremor measurements were also conducted, and one-dimensional depth-shear-wave (Vs) velocity models were generated using the Rayleigh ellipticity method. The bedrock/seismic foundation structure of the study area was defined using two different methods, and these definitions were combined into two-dimensional sections. A depth map of the study area was created, revealing that the thickness of the loose basin unit is approximately 90 m. Ambient noise was recorded at 35 points with a velocity seismometer, and S velocity (Vs) profiles were obtained from joint inversion of Rayleigh ellipticity data and dispersion curves from MASW and ReMi data. Furthermore, the Vs-depth structure of the basin was defined along the profiles cutting the basin in NW-SE and S-N directions, based on the Vs velocities in the 2D gravity model. The frequency range along these profiles was found to be 0.6 Hz in the deep parts of the basin and 2.5 Hz in the shallow parts.
dc.description.sponsorshipScientific Research Coordination Unit of Sivas Cumhuriyet University [M-2021-809]
dc.description.sponsorshipAuthors are grateful to two anonymous reviewers for their thorough and meticulous review of this paper. The authors sincerely thank the Scientific Research Coordination Unit of Sivas Cumhuriyet University for supporting this study as a research project (Project No: M-2021-809).
dc.identifier.doi10.1007/s11600-025-01682-7
dc.identifier.endpage5611
dc.identifier.issn1895-6572
dc.identifier.issn1895-7455
dc.identifier.issue6
dc.identifier.scopus2-s2.0-105015428460
dc.identifier.scopusqualityQ2
dc.identifier.startpage5593
dc.identifier.urihttps://doi.org/10.1007/s11600-025-01682-7
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34921
dc.identifier.volume73
dc.identifier.wosWOS:001564855300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Int Publ Ag
dc.relation.ispartofActa Geophysica
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectBedrock
dc.subjectMicrogravity
dc.subjectShear-wave velocity (Vs)
dc.subjectAmbient noise
dc.subject2D modeling
dc.titleShear-wave velocity model of the Sivas City (inner eastern, Türkiye) using Rayleigh wave ellipticity inversion controlled by 2D microgravity modeling
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu