Development of a regional attenuation relationship for Alborz, Iran

نویسندگان

1 Associate Professor, Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran

2 Graduated Student, Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran

چکیده

New attenuation relationships for rock and soil in Alborz, have been developed in this study. When the quantity of usable ground-motion data is inadequate in the magnitude and distance ranges, development of an empirical prediction equation is deficient. Due to lack of data, the two well-known simulation techniques, point source and finite-fault models have been used to generate more than ten thousands of strong motions as input data. The stochastic finite-fault modeling that can be used to predict regional groundmotion for large faults has been developed based on subdividing the fault surface into smaller subsources, as stochastic point sources. The model incorporates the seismological information obtained from recorded data of northern Iran to provide new information on source and path effects. In this study, the uncertainty due to inherent variability in earthquake source, path, and site effects has been considered. The results include the attenuation relationships that are validated by statistical analysis to compare the estimated ground motion with those of recorded data at the observed stations in Alborz region.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Development of a regional attenuation relationship for Alborz, Iran

نویسندگان [English]

  • Azad Yazdani 1
  • Milad Kowsari 2
  • Sargol Amani 2
1 Associate Professor, Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran
2 Graduated Student, Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran
چکیده [English]

New attenuation relationships for rock and soil in Alborz, have been developed in this study. When the quantity of usable ground-motion data is inadequate in the magnitude and distance ranges, development of an empirical prediction equation is deficient. Due to lack of data, the two well-known simulation techniques, point source and finite-fault models have been used to generate more than ten thousands of strong motions as input data. The stochastic finite-fault modeling that can be used to predict regional groundmotion for large faults has been developed based on subdividing the fault surface into smaller subsources, as stochastic point sources. The model incorporates the seismological information obtained from recorded data of northern Iran to provide new information on source and path effects. In this study, the uncertainty due to inherent variability in earthquake source, path, and site effects has been considered. The results include the attenuation relationships that are validated by statistical analysis to compare the estimated ground motion with those of recorded data at the observed stations in Alborz region.

کلیدواژه‌ها [English]

  • Attenuation relationship
  • Alborz
  • Stochastic simulation
  • uncertainty
Aki, K. and Richards, P. G., 2002, Quantitative seismology: theory and methods, University Science Books, Sausalito, CA.
Ambraseys, N. N., Douglas, J., Sarma, S. K. and Smit, P. M., 2005, Equations for the estimation of strong ground motions from shallow crustal earthquakes using data from Europe and the Middle East: horizontal peak ground acceleration and spectral acceleration, Bulletin of Earthquake Engineering, 3, 1-53.
Anderson, J. and Hough, S., 1984, A model for the shape of the Fourier amplitude spectrum of acceleration at high frequencies, Bulletin of the Seismological Society of America, 74, 1969-1993.
Arroyo, D. and Ordaz, M., 2010, Multivariate Bayesian regression analysis applied to ground-motion prediction equations, part 1: theory and synthetic example, Bulletin of the Seismological Society of America, 100, 1551-1567.
Atkinson, G. and Boore D. M., 2006, Earthquake ground-motion prediction equations for Eastern North America, Bulletin of the Seismological Society of America, 96, 2181-2205.
Atkinson, G. and Silva, W., 1997, An empirical study of earthquake source spectra for California earthquakes, Bulletin of the Seismological Society of America, 87, 97-113.
Atkinson, G., Boore, D. M., Assatourians, K., Campbell, K. W. and Motazedian, D., 2009, A guide to differences between stochastic point source and stochastic finite fault simulations, Bulletin of the Seismological Society of America, 99, 3192-3201.
Beresnev, I. and Atkinson, G., 1997, Modeling finite fault radiation from the ωn spectrum, Bulletin of the Seismological Society of America, 87, 67-84.
Beresnev, I. and Atkinson, G., 2002, Source parameters of earthquakes in eastern and western North America based on finite-fault modeling, Bulletin of the Seismological Society of America, 92, 695-710.
Boore, D. M. and Joyner, W., 1997, Site amplifications for generic rock sites, Bulletin of the Seismological Society of America, 87, 327-341.
Boore, D. M., 1983, Stochastic simulation of high-frequency ground motions based on seismological models of the radiated spectra, Bulletin of the Seismological Society of America, 73, 1865-1894.
Boore, D. M., 2003, Prediction of ground motion using the stochastic method, Pure and Applied Geophysics, 160, 635-676.
Boore, D. M., 2009, Comparing stochastic point- and finite-source ground-motion simulations: SMSIM and EXSIM, Bulletin of the Seismological Society of America, 99, 3202-3216.
Brune, J. N., 1970, Tectonic stress and the spectra of seismic shear waves from earthquakes, Journal of Geophysical Research, 75, 4997-5009.
Building and Housing Research Center, 2005, Iranian Code of Practice for Seismic Resistant Design of Buildings Standard No. 2800, Third Revision, Iran (In Persian).
Building and Housing Research Center, 2014, http://www.bhrc.ac.ir. Last accessed 08Jan 2014
Burger, R., Somerville, P., Barker, J., Herrmann, R. and Helmberger, D., 1987, The effect of crustal structure on strong ground motion attenuation relations in eastern North America, Bulletin of the Seismological Society of America, 77, 420-439.
Chandra, V. J., McWhorten, G. and Nowroozi, A., 1979, Attenuation of intensities in Iran, Bulletin of the Seismological Society of America, 69, 237-250.
Chen, S. Z. and Atkinson, G. M., 2002, Global comparisons of earthquake source spectra, Bulletin of the Seismological Society of America, 92, 885-895.
Farrokhi, M., Hamzehloo, H., Rahimi, H. and Allamehzadeh, M., 2015, Estimation of coda‐wave attenuation in the Central and Eastern Alborz, Iran, Bulletin of the Seismological Society of America, 105, 1756-1767.
Ghasemi, H., Zare, M., Fukushima, Y. and Koketsu, K., 2009, An empirical spectral ground-motion model for Iran, Journal of Seismology, 13, 499-515.
GhodratiAmiri, G., Khorasani, M., MirzaHessabi, R. and RazavianAmrei, S. A., 2010, Ground-motion prediction equations of spectral ordinates and arias intensity for Iran, Journal of Earthquake Engineering, 14, 1-29.
GhodratiAmiri, G., Mahdavian, A. and Manouchehri Dana, F., 2007, Attenuation relationships for Iran, Journal of Earthquake Engineering, 11, 469-92.
Ghofrani, H. and Atkinson, G., 2014, Ground-motion prediction equations for interface earthquakesof M7 to M9 based on empirical data from Japan, Bulletin of the Earthquake Engineering, 12, 549-571.
Hamzehloo, H., Rahimi, H., Sarkar, I., Mahood, M., MirzaeiAlavijeh, H. and Farzanegan, E., 2010, Modeling the strong ground motion and rupture characteristics of the March 31, 2006, Darb-e-Astane earthquake, Iran, using a hybrid of near-field SH-wave and empirical Green’s function method, Journal of seismology 14, 169-195.
Hartzell, S., 1978, Earthquake aftershocks as Green’s functions, Geophysical Research Letters, 5, 1-14.
Harvard Seismology, 2014, Centroid moment tensor (CMT) catalog search, www.seismology.harvard.edu/.
Herrmann, R. and Kijko, A., 1983, Modeling some empirical vertical component Lg relations, Bulletin of the Seismological Society of America, 73, 157-171.
Jackson, J., Priestley, K., Allen, M. and Berberian, M., 2002, Active tectonics of the South Caspian Basin, Geophysical Journal International, 148, 214-245.
Japan International Cooperation Agency (JICA), 2000, The study on seismic microzoning of the greater Tehran area in the Islamic Republic of Iran, Final report to the Government of the Islamic Republic of Iran, Tokyo, Japan.
Javan-emrooz, H. R., EskandariGhadi, M. and Mirzaei, N., 2014, Magnitude and distance dependent design spectra for rock sites based on Iranian acceleration time-histories and comparison with regional design spectra, Journal of the Earth and Space Physics, 40, 1-16 (In Persian).
Joyner, W. B. and Boore, D. M., 1993, Methods for regression analysis of strong-motion data, Bulletin of the Seismological Society of America, 83, 469-487.
Maggi, A., Priestly, K. and Jackson, J., 2003, Focal depths of moderate and large size earthquakes in Iran, Journal of Seismology
and Earthquake Engineering, 4, 1-10.
Mavroeidis, G. and Papageorgiou, A., 2003, A mathematical representation of near-fault ground motions, Bulletin of the Seismological Society of America, 93, 1099-1131.
Morgan, M. G. and Henrion, M., 1990, Uncertainty: a guide to dealing with uncertainty in quantitative risk and policy analysis. Cambridge University Press, New York.
Motazedian, D. and Atkinson, G., 2005, Stochastic finite-fault modeling based on a dynamic corner frequency, Bulletin of the Seismological Society of America, 95, 995-1010.
Motazedian, D., 2006, Region-specific key seismic parameters for earthquakes in Northern Iran, Bulletin of the Seismological Society of America, 96, 1383-1395.
Mousavi, M., Zafarani, H., Noorzad, A., Ansari, A. and Bargi, K., 2007, Analysis of Iranian strong-motion data using the specific barrier model, Journal of Geophysical Engineering, 4, 1-14.
Nazari, H., Ritz, H. F., Walker, R. T., Salamati, R., Rizza, M., Patnaik R., Hollingsworth, J., Alimohammadian, H., Jalali, A., KavehFirouz, A. and Shahidi, A., 2014, Palaeoseismic evidence for a medieval earthquake and preliminary estimate of late Pleistocene slip-rate, on the Firouzkuh strike-slip fault in the Central Alborz region of Iran, Journal of Asian Earth Sciences, 82, 124-135.
Nicknam, A., Yazdani, A. and YaghmaeiSabegh, S., 2009, Predicting probabilistic-based Strong ground motion time series for citadel of Arg-E-Bam (south-east of Iran), Journal of Earthquake Engineering, 13, 482-499.
Nowroozi, A., 2005, Attenuation relations for peak horizontal and vertical accelerations of earthquake ground motion in Iran: a preliminary analysis, Journal of Seismology and Earthquake Engineering, 7, 109-128.
Nuttli, O. W., 1980, The excitation, and attenuation of seismic crustal phases in Iran, Bulletin of the Seismological Society of America, 70, 469-485.
Ólafsson, S. and Sigbjörnsson, R., 1999, A theoretical attenuation model for earthquake-induced ground motion, Journal of earthquake engineering, 3, 287-315.
Ólafsson, S. and Sigbjörnsson, R., 2014, Ground motion prediction equation for south Iceland, second European conference on earthquake engineering and semiology, Istanbul.
Ólafsson, S., Remseth, S. and Sigbjörnsson, R., 2001, Stochastic models for simulation of strong ground motion in Iceland, Earthquake Engineering and Structural Dynamics, 30, 1305-1331.
Saffari, H., Kuwata, Y., Takada, S. and Mahdavian, A., 2012, Updated PGA, PGV, and spectral acceleration attenuation relations for Iran, Earthquake Spectra, 28, 1-20.
Scherbaum, F., Cotton, F. and Smit, P., 2004, On the use of response spectral reference data for the selection of ground-motion models for seismic hazard analysis: the case of rock motion, Bulletin of the Seismological Society of America, 94, 2164-2185.
Scherbaum, F., Delavaud, E. and Riggelsen, C., 2009, Model selection in seismic hazard analysis: an information-theoretic perspective, Bulletin of the Seismological Society of America, 99, 3234-3247.
Shoja-Taheri, J., Naserieh, S. and Ghafoorian-Nasab, A. H., 2005, The 2003 Bam, Iran, earthquake: an interpretation of the strong motion records, Earthquake Spectra, 21, S181-206.
Sinaeian, F., 2006, Study on Iran strong motion records, PhD dissertation, International Institute of Earthquake Engineering and Seismology, Tehran, Iran.
Soghrat, M. R., Khaji, N. and Zafarani, H., 2012, Simulation of strong ground motion in northern Iran using the specific barrier model, Geophys. J. Int., 188, 645-679.
Wang, M. and Takada, T., 2009, A Bayesian framework for prediction of seismic ground motion, Bulletin of the Seismological Society of America, 99, 2348-2364.
Wells, D. L. and Coppersmith, K. J., 1994, New empirical relationships among magnitude, rupture length, rupture width, rupture area and surface displacement, Bulletin of the Seismological Society of America, 84, 974-1002.
Yazdani, A. and Kowsari, M., 2013, Bayesian estimation of seismic hazards in Iran, ScientiaIranica, 20, 422-430.
Zafarani, H., Mousavi, M., Noorzad, A. and Ansari A., 2008, Calibration of the specific barrier model to Iranian plateau earthquakesand development of physically based attenuation relationships for Iran, Soil Dynamic and Earthquake Engineering, 28, 550-576.