Ground-motion simulation for the 2017 Mw7.3 Ezgeleh earthquake in Iran by using the Empirical Green's Function Method
Subject Areas :
Mineralogy
Maryam Pourabdollahi
1
,
Arezou Dorostian
2
,
Habib Rahimi
3
,
Attieh Eshaghi
4
1 - Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran
2 - Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran
3 - Institute of Geophysics, University of Tehran, Tehran, Iran
4 - Road, Housing and Urban Development Research Center, BHRC, Tehran, Iran
Received: 2019-12-09
Accepted : 2020-10-22
Published : 2021-04-01
Keywords:
Strong motion,
Empirical Green’s Function Method,
2017 M7.3 Ezgeleh earthquake,
Simulation,
Abstract :
The aim of this study is to investigate the strong ground motion generation of destructive earthquake in Kermanshah with the moment magnitude of 7.3 using Empirical Green’s function (EGF) method. To simulate the ground-motion can be helpful for understanding seismic hazard and reduce fatalities due to lack of real ground motion. We collected the seismograms recorded at seven strong motion stations with good quality to estimate the source parameters at frequencies between 0.1 and 10.0 Hz. By minimizing the root-mean-square (rms) errors to obtain the best source parameters for the earthquake. The earthquake fault was divided into seven sub-faults along the strike and seven sub-faults along the slope. The asperity of 21×10.5 km was obtained. The rupture starting point has been located in the northern part of the strong motion seismic area. The coordinates of the rupture starting point indicate that the rupture propagation on the fault plan was unilateral from north to south. The simulated ground motions have a good correlation with observed records in both frequency and time domain. The results are in well agreement with the Iranian code of practice for seismic resistant design of buildings, however, the calculated design spectrum of Sarpol-e Zahab station is higher than the design spectrum of the Iranian code which suggest that the Iranian code may need to be re-evaluated for this area.
References:
Ahmadi A, Bazargan-Hejazi S (2018) 2017 Kermanshah earthquake; lessons learned, Journal of injury and violence research 10:p1.
Ambraseys N, Melville C (1982) A History of Persian Earthquakes ̧Cambridge University Press. London.
Bazoobandi MH, Arian MA, Emami MH, Tajbakhsh G, Yazdi A (2016) Petrology and Geochemistry of dikes in the North of Saveh in Iran. Open journal of marine science 6(2) 210-222.
Boore DM (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 DM (2003) Simulation of ground motion using the stochastic method, Pure and applied geophysics 160:635-676.
Bouchon M, Hatzfeld D, Jackson JA, Haghshenas E (2006) Some insight on why Bam (Iran) was destroyed by an earthquake of relatively moderate size, Geophysical Research Letters 3:p9.
Code IS (2005) Iranian code of practice for seismic resistant design of buildings, Standard.
Ding K, He P, Wen Y, Chen Y, Wang D, Li S, Wang Q (2018) The 2017 M w 7.3 Ezgeleh, Iran earthquake determined from InSAR measurements and teleseismic waveforms, Geophysical Journal International 215:1728-1738.
Dewey JF, PITMAN WC III, Ryan WB, Bonnin J (1973) Plate tectonics and the evolution of the Alpine system, Bull. geol. Soc. Am 84(10), 3137–3180.
Falcon NL (1974) Southern Iran: Zagros Mountains, Geological Society, London, Special Publications 4:199-211.
Feng W, Samsonov S, Almeida R, Yassaghi A, Li J, Qiu Q, Li P, Zheng W (2018) Geodetic Constraints of the 2017 Mw7. 3 Sarpol Zahab, Iran Earthquake, and Its Implications on the Structure and Mechanics of the Northwest Zagros Thrust‐Fold Belt, Geophysical Research Letters 45:6853-6861.
Gombert B, Duputel Z, Shabani E, Rivera L, Jolivet R, Hollingsworth J (2019) Impulsive Source of the 2017 MW= 7.3 Ezgeleh, Iran, Earthquake, Geophysical Research Letters 46:5207-5216.
Hartzell SH (1978) Earthquake aftershocks as Green's functions, Geophysical Research Letters 5:1-4.
Irikura K Prediction of strong acceleration motion using empirical Green’s function. In: Proc. 7th Japan Earthq. Eng. Symp, 1986. pp 151-156.
Irikura K, Miyake H (2011) Recipe for predicting strong ground motion from crustal earthquake scenarios, Pure and Applied Geophysics 168:85-104.
Jackson J, Haines J, Holt W (1995) The accommodation of ArabiaEurasia plate convergence in Iran, Journal of Geophysical Research:Res: Solid Earth 100(B8): 15205–15219.
Kanamori H, Anderson DL (1975) Theoretical basis of some empirical relations in seismology, Bulletin of the seismological society of America 65:1073-1095.
Kaviani A (2004) La châin de collision continentale du Zagros (Iran): structure lithosphérique par analyse de données sismologique.
Madariaga R (1976) Dynamics of an expanding circular fault, Bulletin of the Seismological Society of America 66:639-666.
Miyake H, Iwata T, Irikura K (2003) Source characterization for broadband ground-motion simulation: Kinematic heterogeneous source model and strong motion generation area, Bulletin of the Seismological Society of America 93:2531-2545.
Miyamjima M, Fallahi A, Ikemoto T, Samaei M, Karimzadeh S, Setiawan H, Talebi F, Karashi J (2018) Site investigation of the Sarpole-Zahab earthquake, Mw 7.3 in SW Iran of November 12, JSCE J Disaster FactSheets.
Niño M, Ayala G, Ordaz M (2018) Ground‐Motion Simulation by the Empirical Green’s Function Method with a Source Defined by Two Corner Frequencies and a Two‐Stage Summation SchemeGround‐Motion Simulation by the EGF Method, Bulletin of the Seismological Society of America 2018 Apr 1;108(2):901-12.
Nicknam A, Abbasnia R, Eslamian Y, Bozorgnasab M (2009) Extrapolating strong ground motion of the Silakhor earthquake (ML 6.1), Iran, using the empirical Green's function (EGF) approach based on a genetic algorithm, Canadian Journal of Earth Sciences 46:801-810.
Poorbehzadi K, Yazdi A, Sharifi Teshnizi E, Dabiri R (2019) Investigating of Geotechnical Parameters of Alluvial Foundation in Zaram-Rud Dam Site, North Iran. International Journal of Mining Engineering and Technology 1(1): 33-34.
Riahi A, Sadeghi H, Hosseini SK (2015) Simulation of 2003 Bam (Iran) earthquake using empirical Green's function method via very small and near-fault events, Geophysical Journal International 201:1264-1286.
Shahvar MP, Eshaghi A, Farzanegan E, Alavijeh HM (2018) StrongMotion Records in Sarpol-e-Zahab Earthquake, Journal of Seismology & Earthquake Engineering 20.
Somerville P, Irikura K, Graves R, Sawada S, Wald D, Abrahamson N, Iwasaki Y, Kagawa T, Smith N, Kowada A (1999) Characterizing crustal earthquake slip models for the prediction of strong ground motion, Seismological Research Letters 70:59-80.
Tatar M (2001) Etude sismotectonique de deux zones de collision continentale: le Zagros central et l'Alborz (Iran). Grenoble 1.
Theodulidis N, Bard PY (1995) Horizontal to vertical spectral ratio and geological conditions: an analysis of strong motion data from Greece and Taiwan (SMART-1), Soil dynamics and earthquake engineering 14(3): 177-197.
Vajedian S, Motagh M, Mousavi Z, Motaghi K, Fielding E, Akbari B, Wetzel HU, Darabi A (2017) Coseismic deformation field of the Mw 7.3 12 November 2017 Sarpol-e Zahab (Iran) earthquake: A decoupling horizon in the northern Zagros Mountains inferred from InSAR observations, Remote Sensing 2018 Oct;10(10):1589.
Yazdi A, Ashja-Ardalan A, Emami MH, Dabiri R, Foudazi M (2017) Chemistry of Minerals and Geothermobarometry of Volcanic Rocks in the Region Located in Southeast of Bam, Kerman Province. Open Journal of Geology 7(11): 1644-1653.
Yazdi A, Shahhosini E, Dabiri R, Abedzadeh H (2019) Magmatic differentiation evidences and source characteristics using mineral chemistry in the Torud intrusion (Northern Iran), Revista Geoaraguaia 9(2): 1-21.
Zare M, Bard P-Y, Ghafory-Ashtiany M (1999) Site characterizations for the Iranian strong motion network, Soil Dynamics and Earthquake Engineering 18:101-123.
