Simulation of Near-Fault Seismic Ground Motions of 03 November, 2002 Denali Earthquake Using Modified Semi-Empirical Approach

Document Type : Research Papers


1 Associate Professor, School of Civil Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal, India.

2 Professor, Earthquake Engineering Research Centre, International Institute of Information Technology, Hyderabad, India.


An effective earthquake (Mw 7.9) struck Alaska on 3 November, 2002. It ruptured 340 km along three faults namely, the Susitna Glacier, Denali and Totschunda faults in central Alaska. The earthquake was recorded at 23 stations in Alaska and the Peak Ground Acceleration (PGA) of 0.32g was recorded at station PS10, which was located 3 km from the fault rupture. In this study, strike-slip Denali fault has been considered for studying the characteristics of ground motions through modified semi-empirical approach. The ground motion records of the 2002 Denali earthquake are generated through MATLAB code. The results revealed that modified semi-empirical approach is fairly good in agreement with observed ground motion records at all stations. A perfect match is observed between Fourier amplitude spectra of simulated and observed ground motions at PS09 and CARLO stations. A good match is observed between elastic response spectra of observed and simulated ground motions.


AEIC (Alaska Earthquake Information Center). (2019).
Anderson, J.G. (2015), “The composite source model for broadband simulations of strong ground motions”, Seismological Research Letters, 86(1), 68-74.
Andrea, B. and Chao, L. (2016). “Near-field radiated wave field may help to understand the style of the super-shear transition of dynamic ruptures”, Physics of the Earth and Planetary Interiors, 261, 133-140.
Boore, D.M. (1983). “Stochastic simulation of high frequency ground motion based on seismological models of radiated spectra”, Bulletin of Seismological Society of America, 73, 1865-1894.
Consortium of Organizations for Strong-Motion Observation Systems (COSMOS). (2013),, dated: 20 August 2013.
Dreger, D. (2003). “Finite source modeling of great earthquakes”, Annual Report, Berkeley Seismological Laboratory, University of California, Berkeley, United States of America.
Hajiazizi, M., Taban, M.H. and Ghobadian, R. (2021). "Prediction of Q-value by multi-variable regression and novel Genetic Algorithm based on the most influential parameters", Civil Engineering Infrastructures Journal, 54(2), 267-280.
Hasegawa, H.S., Basham, P.W. and Berry, M.J. (1981). “Attenuation relations for strong seismic ground motion in Canada”, Bulletin of Seismological Society of America, 71, 1943-1962.
Javier, L., Miguel, A.S., Miguel, A.J., Yanet, A. and Marcos, C. (2016). “Local earthquakes of the Mexico Basin in Mexico City: κQ, source spectra and stress drop”, Bulletin of the Seismological Society of America, 106(4), 1423-1437.
Kikuchi, M. and Yamanaka, Y. (2002). “Source rupture processes of the central Alaska earthquake of Nov. 3, 2002, inferred from tele-seismic body waves”, EIC Seismological Note 129, Earthquake Research Institute (ERI), University of Tokyo, Tokyo.
Krishnavajjhala, S. (2021). “Simulation of strong ground motion in the National Capital Region, India, from a future 8.5 magnitude earthquake using two‐step empirical Green’s function method”, Bulletin of Seismological Society of America, 111(4), 1-18.
Lal, S., Joshi, A., Sandeep., Monu, T., Parveen, K., Chun-Hsiang, K., Che-Min, L., Kuo-Liang, W. and Sharma, M.L. (2018). “Modeling of the strong ground motion of 25th April 2015 Nepal earthquake using modified semi-empirical technique”, Acta Geophysica, 66, 461-477.
Lin, Z., Liu, Z.J., Weldon, R.J., Tian, J., Ding, C. and Du, Y. (2020). “Modeling repeated co-seismic slip to identify and characterize individual earthquakes from geomorphic offsets on strike-slip faults”, Earth and Planetary Science Letters, 545, 1-14.
MATLAB (2018). The MathWorks, Inc., Natick, Massachusetts, United States of America.
Midorikawa, S. (1993). “Semi-empirical estimation of peak ground acceleration from large earthquakes”, Tectonophysics, 218, 287-295.
Mobinipour, S.A. and Pourzeynali, S. (2020). "Assessment of near-fault ground motion effects on the fragility curves of tall steel moment resisting frames", Civil Engineering Infrastructures Journal, 53(1), 71-88.
Ozacar, A.A. and Beck, S.L. (2004). “The 2002 Denali fault and 2001 Kunlun fault earthquakes: Complex rupture processes of two large strike-slip events”, Bulletin of Seismological Society of America, 94, S278-S292.
Rajaram, C. and Pradeep R.K. (2020). “Preliminary estimation of ground motion of September 24, 2013, Pakistan earthquake using modified semi-empirical approach”, Journal of Seismology and Earthquake Engineering, 22, 1-12.
Rajaram, C. (2016). “Numerical modeling of near fault seismic ground motions for strike-slip and dip-slip faults”, Ph.D. Thesis, International Institute of Information Technology, Hyderabad, India.
Rajaram, C. and Pradeep R.K. (2016). “Simulation of near-field ground motion characteristics of May 01, 2013, Doda earthquake using modified semi-empirical approach”, Natural Hazards, 82, 1411-1430.
Ratchkovski, N.A., Hansen, R.A., Stachnik, J.C., Cox, T., Fox, O., Rao, L., Clark, E., Lafevers, M., Estes, S., MacCormack, J.B. and Williams, T. (2003). “Aftershock sequence of the Mw 7.9 Denali fault, Alaska, earthquake of 3 November 2002 from regional seismic network data”, Seismological Research Letters, 74, 743-752.
Sandeep, A., Joshi, A., Kamal, P., Kumar, A. and Kumar, P.D. (2015). “Modeling of strong motion generation areas of the Niigata, Japan, earthquake of 2007 using modified semi empirical technique”, Natural Hazards, 77, 933-957.
Sandeep, A., Joshi, A., Lal, S., Kumar, P. and Sah, S.K. (2017). “Simulation of strong ground motion of the 2009 Bhutan earthquake using modified semi-empirical technique”, Pure and Applied Geophysics, 174(12), 4343-4356.
Sato, R. (1989). Handbook of fault parameters of Japanese earthquakes, Kajima, Tokyo (in Japanese).
Strong Motion Virtual Data Centre (SMVDC). (2015), scripts/earthquakes.plx, dated: 20 August 2015.
Tadahiro, K., Olga, J.K., Robert, B.D. and Walter, J.S. (2016). “Semi-automated procedure for windowing time series and computing Fourier amplitude spectra for the NGA-West2 database”, PEER Report No. 2016/02, Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA.
Uenishi, K. (2017). “Rupture, waves and earthquakes”, Proceedings of the Japan Academy Series B: Physical and Biological Sciences, 93(1), 28-49.
United States Geological Survey (USGS). (2019). dated: 24 April 2019.
Wang, D., Mori, J. and Koketsu, K. (2016). “Fast rupture propagation for large strike-slip earthquakes”, Earth and Planetary Science Letters, 440, 115-126. 
Yousef, B. and Jonathan, P.S. (2020). “Data resources for NGA-subduction project”, PEER Report No. 2020/02, Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA.
Volume 55, Issue 1
June 2022
Pages 43-58
  • Receive Date: 23 August 2020
  • Revise Date: 17 August 2021
  • Accept Date: 30 August 2021
  • First Publish Date: 01 June 2022