Seismic Hazard Assessment and Determination of Maximum Design Base Acceleration of Yazd

Document Type: Regular Paper


1 Assistant Professor, Department of Civil Engineering, Yazd University, Yazd

2 Master of Science

3 Assistant Professor, Department of Civil Engineering, Yazd University, Yazd, Iran


According to Iranian code of practice for seismic resistant design of buildings standard No. 2800, Yazd is located in the place with the medium earthquake hazard [1]. Due to the position of Yazd with many historical and important buildings, maintaining these traditional heritages is an important task in civil engineering field. On account of these mentioned valuable buildings and region potential in constructing the new vital structures, exact regional seismicity surveying and seismic hazard assessment would need to be scrutinized. For this purpose a collected catalogue, containing both historical and instrumental events is used covering the period from the 4th century BC to 2010. Seismic sources are modeled and recurrence relationship is obtained. The method proposed by Kijko [2] and Tavakoli [3] were employed for determination of seismicity parameters. Then logic tree method and weighted attenuation relationships were applied. Probabilistic seismic hazard assessment is carried out using SEISRISK III for Yazd University site. At the end, Peak Ground Accelerations (PGA) of the studied area for a return period of 475 and 2475 years for 10% and 2% probability of exceedance in life cycle of 50 years are evaluated equal to 0.25g and 0.35g.


[1] BHRC, (2005). “Iranian Code of Practice for Seismic Resistant Design of Buildings, standard No. 2800”. 3rd Revision, Building and Housing Research center, Tehran, Iran.

[2] GhodratiAmiri, G., Motamed, R., Rabetes-haghi, H. (2003). “Seismic Hazard Assessment of Metropolitan Tehran”. Iran, Journal of Earthquake Engineering, Vol. 7, No. 3, pp. 347-372.

[3] Stocklin, J. (1968). “Structural History and Tectonics of Iran, a Review”. Bull. Am. Assoc. petrol. Geol. 52, 1229-1258.

[4] Takin., M. (1972). “Iranian Geology and Continental Drift in the Middle East”. Nature 235, 147-150.

[5] Berberian, M. (1976). “Contribution to the Seismotectonic of Iran”. part II, Geological Survey of Iran, Report No.39.

[6] Nowroozi, A. (1976). “Seismotectonic Provinces of Iran”. BSSA 66, 1249-1276.

[7] Tavakoli, B. (1996). “Major Seismotectonic Provinces of Iran, International Institute of Earthquake Engineering and Seismology”. Internal Document.

[8] Mehrnahad, H.R. (2000). “Study of Seismicity, Seismotectonic and Estimate of Seismic Hazard in Yazd”. Shahid Beheshti University, Iran.

[9] Berberian, M. (1973). “Preliminary Map of Epicenters and Focal Depth”. Geological Survey of Iran press, Iran.

[10] Moinfar, A., Mahdavian, A., Maleki, E. (1994). “Historical and Instrumental Earthquake Data Collection of Iran”. MahabGhods Consultant Engineers, Iran.

[11] Ambraseys, N.N., Melville, C.P. (1982). “A history of Persian Earthquakes”. Cambridge University Press, Cambridge, Britain.

[12] KIJKO, A. (2000). “Statistical Estimation of Maximum Regional Earthquake Magnitude mmax, Workshop of Seismicity Modelling in Seismic Hazard Mapping”. Poljce, slovenia, May 22-24.

[13] Gardner, J.K., Knopoff, L. (1974). “Is the Sequence of Earthquake in Southern California, with Aftershocks Removed, Poissonian? ”.  BSSA 64(5), 1363-1367.

[14] IRCOLD, Iranian Committee of Large Dams, (1994). “Relationship Between Ms and mb”.  Internal Report, Tehran, Iran.

[15] Gutenberg, B., Richter, C.F. (1954). “Seismicity of the Earth and Associated Phenomena”. Princeton University Press, New Jersey.

[16] Shah, H.c., Manoutchehr, M., Zsutty, T. (1976). “Seismic Risk Analysis for California State Water Project Research”. The John A. Blume Earthquake Engineering Center, Department of Civil Engineering, Standford University, Report No. 22.

[17] Green, A.R., Hall, W.J. (1994). “An Overview of Selected Seismic Hazard Analysis Methodologies”. A Report on a Research Project, Department of Civil Engineering, University of Illinois at Urbana-Champaign.

[18] GhodratiAmiri, G., Mahdavian, A., ManouchehriDana, F. (2007). “Attenuation Relationships for Iran”. Journal of Earthquake Engineering, Vol. 11, Issue 4, pp. 469-492.

[19] Ambraseys, N.N., Bommer, J.J. (1991). “The Attenuation of Ground Accelerations in Europe”. Earthquake Engineering and Structural Dynamics 20(12), 1179-1202.

[20] Sarma, S.K., Srbulov, M. (1996). “A Simplified Method for Prediction of Kinematic Soil Foundation Interaction Effects on Peak Horizontal Acceleration of A Rigid Foundation”.  Earthquake Engineering and Structural Dynamics 25(8), 815-836.

[21] Douglas, J. (2001). “A Comprehensive Worldwide Summary of Strong–motion Attenuation Relationships for Peak Ground Acceleration and Spectral Ordinates (1969 to 2000)”.  ESEE Report NO.01-1, Civil Engineering Department, Imperial College of Science, Technology and Medicine, London.

[22] Tavakoli, B. (1994). “The Basics of Seismic Hazard Analysis”. International Institute of Earthquake Engineering and Seismology, Tehran, Iran.

[23] Nowroozi, A. (1985). “Empirical Relations Between Magnitude and Fault Parameters for Earthquake in Iran”. BSSA 75(5), 1327-1338.

[24] Bender, B., Perkins, D.M. (1987). “SEISRISK III, A Computer Program for Seismic Hazard Estimation”. US Geological Survey, Bulletin 1772.