A Nonlinear Site-Amplification Model for the Next Pan-European Ground-Motion Prediction Equations

Download

index.pdf

Date

2013-02-01

Author

Sandikkaya, M. Abdullah
Akkar, Dede Sinan
Bard, Pierre-Yves

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

162
views

0
downloads

A site-amplification model for shallow crustal regions that considers both linear and nonlinear soil effects is proposed. The original functional form of the model was developed by Walling et al. (2008) (WAS08) using stochastic simulations and site-response analysis. The major difference between the proposed model and WAS08 is that our site-amplification expression is entirely based on empirical data. To comply with this objective, a database with the most recent V-S30 information from the pan-European region has been compiled. This feature of the model encourages its use for the future ground-motion prediction equations (GMPEs) that will be devised particularly for this region. Worldwide accelerograms are also considered to have a better representation of the soil behavior under strong-motion excitations. As an auxiliary tool a GMPE for reference-rock sites is also developed to calculate the site-amplification factors. The coefficients of the site-amplification model as well as the reference-rock model are computed by applying the random-effects regression technique proposed by Abrahamson and Youngs (1992). Preliminary results of this article suggest a more comprehensive study for the revision of site factors in Eurocode 8 (European Committee for Standardization [CEN], 2004).

Subject Keywords

Geochemistry and Petrology, Geophysics

URI

https://hdl.handle.net/11511/62859

Journal

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA

DOI

https://doi.org/10.1785/0120120008

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Full waveform inversion for seismic velocity and anelastic losses in heterogeneous structures Askan Gündoğan, Ayşegül; Bielak, Jacobo; Ghattas, Omar (Seismological Society of America (SSA), 2007-12-01) We present a least-squares optimization method for solving the nonlinear full waveform inverse problem of determining the crustal velocity and intrinsic attenuation properties of sedimentary valleys in earthquake-prone regions. Given a known earthquake source and a set of seismograms generated by the source, the inverse problem is to reconstruct the anelastic properties of a heterogeneous medium with possibly discontinuous wave velocities. The inverse problem is formulated as a constrained optimization prob...
Estimating tectonic history through basin simulation-enhanced seismic inversion: geoinfomatics for sedimentary basins Tandon, K; Tuncay, Kağan; Hubbard, K; Comer, J; Ortoleva, P (Oxford University Press (OUP), 2004-01-01) A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin processes in response to geothermal gradient in much greater detail than previously attempted. The approach not only reduces costs by integrating the basin analysis and seismic inversion activities to understand the sedimentary basin evolution with respect to geodynamic parameters- but the tec...
Evaluation of Site Response with Alternative Methods: A Case Study for Engineering Implications Sisman, Fatma Nurten; Askan Gündoğan, Ayşegül; Asten, Michael (Springer Science and Business Media LLC, 2018-01-01) In this paper, efficiency of alternative geophysical techniques for site response is evaluated in two sedimentary basins on the North Anatolian Fault Zone. For this purpose, fundamental frequencies of soils and corresponding amplitudes obtained from empirical horizontal-to-vertical spectral ratio curves from microtremors, weak motions and strong motions are compared with results from one-dimensional theoretical transfer functions. Theoretical transfer functions are computed using S-wave velocity profiles de...
Sensitivity Study of Hydrodynamic Parameters During Numerical Simulations of Tsunami Inundation Ozer, Ceren; Yalçıner, Ahmet Cevdet (Springer Science and Business Media LLC, 2011-11-01) This paper describes the analysis of a parameter, "hydrodynamic demand,'' which can be used to represent the potential for tsunami drag force related damage to structures along coastlines. It is derived from the ratio of drag force to hydrostatic force caused by a tsunami on the structure. It varies according to the instantaneous values of the current velocities and flow depths during a tsunami inundation. To examine the effects of a tsunami in the present study, the analyses were performed using the tsunam...
Are U-Th Dates Correlated With Historical Records of Earthquakes? Constraints From Coseismic Carbonate Veins Within the North Anatolian Fault Zone KARABACAK, VOLKAN; Uysal, I. Tonguc; MUTLU, HALİM; Unal-Imer, Ezgi; Dirik, R. Kadir; Feng, Yue-xing; AKISKA, SİNAN; Aydogdu, Ismail; Zhao, Jian-xin (American Geophysical Union (AGU), 2019-07-01) U-Th dating of carbonate veins in connection with active tectonics has recently been used as an attractive tool for constraining the absolute timing of late Quaternary crustal deformations. In this study, for the first time we correlate U-Th ages of travertine deposits in coseismic fissures along the North Anatolian Fault Zone with records of paleoseismological studies supported by historical earthquake catalogued data. U-Th ages are assessed in relation to the recurrence interval and the size and epicenter...

Citation Formats

M. A. Sandikkaya, D. S. Akkar, and P.-Y. Bard, “A Nonlinear Site-Amplification Model for the Next Pan-European Ground-Motion Prediction Equations,” BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, pp. 19–32, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62859.