A suite of broadband physics-based ground motion simulations for the Istanbul region

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dc.contributor.authorZhang, Wenyang
dc.contributor.authorCrempien, Jorge G. F.
dc.contributor.authorKurtulus, Asli
dc.contributor.authorChen, Peng-Yu
dc.contributor.authorArduino, Pedro
dc.contributor.authorTaciroglu, Ertugrul
dc.date.accessioned2025-01-20T20:19:36Z
dc.date.available2025-01-20T20:19:36Z
dc.date.issued2023
dc.description.abstractPhysics-based earthquake ground motion simulations (GMS) have acquired significant growth over the last two decades, mainly due to the explosive developments of high-performance computing techniques and resources. These techniques benefit high/medium seismicity regions such as the city of Istanbul, which presents insufficient historical ground motion data to properly estimate seismic hazard and risk. We circumvent this reality with the aid of the Texas Advanced Computing Center (TACC) facilities to perform a suite of 57 high-fidelity broadband (8-12 Hz) large-scale physics-based GMS for a region in Istanbul, Turkey. This paper focuses on the details of simulated GMS: (i) validation of the GMS approach against recorded ground motions produced by the 2019 Mw5.7$M_{w}\nobreakspace 5.7$ Silivri earthquake; (ii) characteristics of 57 different source models, which aim to consider the uncertainties of many fault rupture features, including the length and width, dip, strike, and rake angles of considered fault planes, as well as hypocenter locations and earthquake magnitudes ranging between Mw$M_{w}$ 6.5 and 7.2; (iii) high-resolution topography and bathymetry and seismic data that are incorporated into all GMS; (iv) simulation results, such as PGAs and PGVs versus Vs30$V_{s30}$ and distances to fault ruptures (Rrup$R_{\text{rup}}$), of 2912 surface stations for all 57 GMS. More importantly, this research provides a massive database of displacement, velocity and acceleration time histories in all three directions over more than 20,000 stations at both surface and bedrock levels. Such site-specific high-density and -frequency simulated ground motions can notably contribute to the seismic risk assessment of this region and many other applications.
dc.description.funderScientific and Technological Research Council of Turkey
dc.fuente.origenWOS
dc.identifier.doi10.1002/eqe.3809
dc.identifier.eissn1096-9845
dc.identifier.issn0098-8847
dc.identifier.urihttps://doi.org/10.1002/eqe.3809
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92533
dc.identifier.wosidWOS:000908316300001
dc.issue.numero4
dc.language.isoen
dc.pagina.final1181
dc.pagina.inicio1161
dc.revistaEarthquake engineering & structural dynamics
dc.rightsacceso restringido
dc.subjectearthquake wave propagation
dc.subjecthigh frequency
dc.subjectphysics-based ground motion simulation
dc.subjectregional-scale analysis
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleA suite of broadband physics-based ground motion simulations for the Istanbul region
dc.typeartículo
dc.volumen52
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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