Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31108
Investigation of Regional Differences in Strong Ground Motions for the Iranian Plateau

Authors: Farhad Sedaghati, Shahram Pezeshk


Regional variations in strong ground motions for the Iranian Plateau have been investigated by using a simple statistical method called Analysis of Variance (ANOVA). In this respect, a large database consisting of 1157 records occurring within the Iranian Plateau with moment magnitudes of greater than or equal to 5 and Joyner-Boore distances up to 200 km has been considered. Geometric averages of horizontal peak ground accelerations (PGA) as well as 5% damped linear elastic response spectral accelerations (SA) at periods of 0.2, 0.5, 1.0, and 2.0 sec are used as strong motion parameters. The initial database is divided into two different datasets, for Northern Iran (NI) and Central and Southern Iran (CSI). The comparison between strong ground motions of these two regions reveals that there is no evidence for significant differences; therefore, data from these two regions may be combined to estimate the unknown coefficients of attenuation relationships.

Keywords: Strong Ground Motion, ANOVA, PGA, attenuation relationships, Iranian Plateau, regional variation

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 980


[1] M. Ma’hood, and H. Hamzehloo, “Estimation of coda wave attenuation in East Central Iran”, J. Seismol., vol. 13, pp. 125-139, 2009.
[2] H. Rahimi, and H. Hamzehloo, “Lapse time and frequency-dependent attenuation of coda 636 waves in the Zagros continental collision zone in Southwestern Iran”, J. of Geophys. Eng., vol. 5, pp. 173-185, 2008.
[3] J. Douglas, “An investigation of analysis of variance as a tool for exploring regional differences in strong ground motions” J. of Seismol. vol. 8, pp. 485–496, 2004.
[4] J. Douglas, “Use of Analysis of Variance for the Investigation of Regional Dependence of Strong Ground Motions” 13th World Conference on Earthquake Engineering, Vancouver, Canada, paper no. 2, August 2004.
[5] M. Zare, M. Ghafory-Ashtiany, and P. Y. Bard, “Attenuation law for the strong-motions in Iran”, Proc. of the Third International Conference on Seismology and Earthquake Engineering, Tehran, Iran, vol. 1, pp. 345–354, 1999.
[6] G. Ghodrati Amiri, A. Mahdavian, and F. M. Dana, “Attenuation relationships for Iran”, J. Earthq. Eng., vol.11, pp. 469–492, 2007.
[7] H. Saffari, Y. Kuwata, S. Takada, and A. Mahdavian, “Updated PGA, PGV, and spectral acceleration attenuation relations for Iran”, Earthq. Spectra, vol. 28, pp. 257–276, 2012.
[8] H. Ghasemi, M. Zare, Y. Fukushima, and K. Koketsu, “An empirical spectral ground-motion model for Iran”, J. Seismol., vol. 13, pp. 499–515, 2009.
[9] S. Akkar, JJ. Bommer “Empirical prediction equations for peak ground velocity derived from strong-motions records from Europe and the Middle East”, Bull. Seismol. Soc. Am., vol. 97, pp. 511–530, 2007.
[10] S. Akkar, and J.J. Bommer “Influence of long-period filter cut-off on elastic spectral displacements,” Earthquake Engineering and Structural Dynamics, vol. 35, pp. 1145-1165, 2006.
[11] H. Ghasemi, M. Zare, Y. Fukushima, F. Sinaeian “Applying empiricalmethods in site classification, using response spectral ratio (H/V), a case study on Iranian Strong Motion Network (ISMN)”, Soil Dyn. Earthqu. Eng., vol. 29, pp. 121-132, 2008.
[12] D. M. Boore, W. B. Joyner, and T. E. Fumal “Estimation of response spectra and peak 582 accelerations from western North American earthquakes”, an interim report U.S. Geol. Surv, 1993.
[13] O. Kale, S. Akkar, A. Ansari, H. Hamzehloo “A Ground-Motion Predictive Model for Iran and Turkey for Horizontal PGA, PGV, and 5% Damped Response Spectrum: Investigation of Possible Regional Effects”, Bull. Seismol. Soc. Am., vol. 105, pp. 963-980, 2015.
[14] M. A. Sandıkkaya, S. Akkar, and P.-Y. Bard “A nonlinear site amplification model for the new pan-European ground-motion prediction equations”, Bull. Seismol. Soc. Am., Vol. 103, pp. 19–32, 2013.