Evaluation of Horizontal Seismic Hazard of Naghan, Iran

This paper presents probabilistic horizontal seismic hazard assessment of Naghan, Iran. It displays the probabilistic estimate of Peak Ground Horizontal Acceleration (PGHA) for the return period of 475, 950 and 2475 years. The output of the probabilistic seismic hazard analysis is based on peak ground acceleration (PGA), which is the most common criterion in designing of buildings. A catalogue of seismic events that includes both historical and instrumental events was developed and covers the period from 840 to 2009. The seismic sources that affect the hazard in Naghan were identified within the radius of 200 km and the recurrence relationships of these sources were generated by Kijko and Sellevoll. Finally Peak Ground Horizontal Acceleration (PGHA) has been prepared to indicate the earthquake hazard of Naghan for different hazard levels by using SEISRISK III software.

Authors:

• S. A. Razavian Amrei
• G.Ghodrati Amiri
• D. Rezaei

Keywords:

• Seismic Hazard Assessment
• Seismicity Parameters
• PGA
• Naghan
• Iran

References:

[1] BHRC. Iranian Code of Practice for Seismic Resistant Design of
Building, Standard No. 2800, Third Revision, Building and Housing
Research Center, Tehran, Iran, 2005.
[2] IIEES, International Institute of Earthquake Engineering & Seismology,
http://www.iiees.ac.ir/.
[3] Ambraseys NN, Melville CP. A History of Persian Earthquakes,
Cambridge University Press, Cambridge, Britain, 1982.
[4] Iranian Committee of Large Dams (IRCOLD). Relationship Between
Fault Length and Maximum Expected Magnitude. Internal Report,
1994. (In Persian)
[5] Gardner JK and Knopoff L. "Is the sequence of earthquake in southern
California, with aftershocks removed, Poissonian?," Bulletin of the
Seismological Society of America, 64, Issue 5, 1363-1367, 1974.
[6] Kijko A. "Statistical estimation of maximum regional earthquake
magnitude Mmax," Workshop of Seismicity Modeling in Seismic
Hazard Mapping, Poljce, Slovenia, 2000.
[7] Gutenberg B and Richter CF., "Seismicity of the Earth and Associated
Phenomena", Princeton University Press, New Jersey, 1954.
[8] Ghodrati Amiri G, Mahdavian A and Manouchehri Dana F.
"Attenuation relationships for Iran," Journal of Earthquake Engineering,
11(4), 469-492, 2007.
[9] Zare M, Ghafory-Ashtiany M and Bard P Y., "Attenuation law for the
strong-motions in Iran" in Proceedings of the 3rd International
Conference on Seismology and Earthquake Engineering, Tehran, Iran,
345-354, 1999.
[10] Campbell, K W., "Empirical near-source attenuation relationships for
horizontal and vertical components of peak ground acceleration, peak
ground velocity, and pseudo-absolute acceleration response spectra",
Seismological Research Letters, 68(1), 154-179, 1997.
[11] Campbell, K W., and Bozorgnia, Y., "Near-source ground-motion
relations for the horizontal and vertical components of peak ground
acceleration and acceleration response spectra ", Bulletin of the
Seismological Society of America, 93 (3), 2003.
[12] Nowroozi, A., "Empirical relations between magnitude and fault
parameters for earthquakes in Iran", Bulletin of the Seismological
Society of America, 75: 1327-1338, 1985.
[13] Bender B and Perkins D M., "SEISRISK ΙΙΙ, A computer program for
seismic hazard estimation," Bulletin of U.S. Geological Survey, 1772,
1987.