ABSTRACT As an important step in effectively reducing seismic risk and the vulnerability of the city of Mobarakeh to earthquakes, a site effect microzonation Study was conducted. Seismic hazard analysis for a return period of 475 years was carried out. Data from 10 borings was collected and analyzed, geophysical surveys were conducted and seismology and geoelectric measurements taken in more than 17 stations through out the city. The study area was divided into a grid of 500×500 m2 elements and the sub-surface ground conditions were classified into 5 representative geotechnical profiles. Electric resistivity was measured in close to 17 geotechnical boreholes and surface and sub-surface sediments were collected and analyzed. Site response analyses were carried out on each representative profile using 30 different base rock input motions. Distribution maps of site periods and peak ground acceleration and old and new texture buildings through out the city were developed, providing a useful basis for land-use planning in the city.
Cite this paper
Rezaei, K. , Mumsaz, N. , Hejazi, H. , Sarraf, R. and Norouzi, S. (2012) Soil and Sediments Microzonation for Evaluation of Site Effects on Earthquake Damages in Mobarakeh, Esfahan, Iran. Open Journal of Geology, 2, 213-228. doi: 10.4236/ojg.2012.24022.
 K. Rezaei, A. Friedrich, B. Guest, F. Fayazi, M. Nakhaei, S. M. F. Aghda and A. Beitollahi, “Soil and Sediment Quality and Composition as Factors in the Distribution of Damage at the December 26, 2003, Bam Area Earthquake in SE Iran (Ms=6.6),” Journal of Soils and Sediments, Vol. 9, No. 1, 2009, pp. 23-32.
 M. Zare, “Contribution a L’ Etude Des Movements Forts En Iran: Du Catalogue Aux Lois D’ Attenuation,” Ph.D. Thesis, Joseph Fourier University, Grenoble, 1999.
 M. Kamalian, M. K. Jafari, M. R. Ghayamghamian, A. Shafiee, H. Hamzehloo, E. Haghshenas and A. Sohrabi-Bidar, “Site Effect Microzonation of Qom, Iran,” The Journal of Engineering Geology, Vol. 97, No. *, 2008, pp. 63-79.
 K. Ishihara and A. M. Ansal, “Dynamic Behavior of Soil, Soil Amplification and Soil Structure Interaction,” Final Report for Working Group D, UNDP/UNESCO Project on Earthquake Risk Reduction in the Balkan Region, 1982.
 K. Rezaei, S. Norouzi and R. Sarraf, “Study of Relationship between Q and Electric Resistivity and Thickness (RT) in Aliabad Plain of Mobarakeh,” The 1st Conference of Applied Geology in Iran, Azad University of Mashhad (in Farsi), 2007.
 H. R. Ramazi, “Seismotectonic, Seismicity and Relative Earthquake Hazard Zoning in Mobarakeh Province,” Housing and Urbanization Organization, Mobarakeh, 2002.
 D. M. Boore, W. B. Joyner and T. E. Fumal, “Equations for Estimating Horizontal Response Spectra and Peak Acceleration from Western North American Earthquakes: A Summary of Recent Work,” Seismological Research Letters, Vol. 68, No. 1, 1997, pp. 128-153.
 K. W. Campbell and Y. Bozorgnia, “Updated Near-Source Ground-Motion (Attenuation) Relations for the Horizontal and Vertical Components of Peak Ground Acceleration and Acceleration Response Spectra,” Bulletin of the Seismological Society of America, Vol. 93, No. 1, 2003, pp. 314-331. doi:10.1785/0120020029
 International Council of Building Officials, “Uniform Building Code. International Council of Building Officials,” International Building Code, 1997.
 Building Seismic Safety Council, “NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Part 1: Provisions (FEMA368),” Federal Emergency Management Agency, Oklahoma City, 2003.
 Building and Housing Research Center, “Iranian Code of Practice for Seismic Resistant Design of Buildings, Standard No. 2800,” 3rd Edition, Building and Housing Research Center, 2005.
 P. B. Schnabel, J. Lysmer and H. B Seed, “Shake: A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites,” Report EERC-72-12, Earthquake Engineering Research Center, University of California, Berkeley, 1972.
 H. B. Seed and I. M. Idriss, “Soil Moduli and Damping Factors for Dynamic Response Analysis,” Report EERC70-10. 1970.
 Geological Survey of Iran, “Geological Map of Iran, 1:100,000 Series, Sheet 6169-Esfahan,” 1978.
 Water Affairs Office of Mobarakeh Province (WAO-QP), “Location Map of Water Wells and Ground Water Level Maps of Mobarakeh Area,” Water Resources Assessment Office, Ministry of Power (WRAO-PM), Geo Electrical Studies of Mobarakeh Region, 2004.
 K. Hessami, F. Jamali and H. Abasi, “Major Active Faults of Iran,” International Institute of Earthquake Engineering and Seismology (IIEES), 2003.
 * “Revised Manual for Zonation on Seismic Geotechnical Hazards,” Japanese Society of Soil Mechanics and Foundation Engineering, 1999.
 Earthquake Engineering Research Center, “Technical Committee for Earthquake Geotechnical Engineering, (TC4),” University of California, Berkeley, 1999.