Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method

For time history analysis of structures, appropriate records are needed. Due to the lack of strong-motion records from large earthquakes in some parts of Iran (e.g. Tehran region), earthquake simulation is a useful tool for studying strong-motion characteristics. In this study, a hybrid method has b...

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Autores principales:	Ali Hadian, Hamid Zafarani, Jamshid Farjoodi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2015
Materias:	earthquake simulation hybrid simulation method roudbar-manjil earthquake Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/f1efa7d9ef5347e2a9b30781f4aea90f
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spelling	oai:doaj.org-article:f1efa7d9ef5347e2a9b30781f4aea90f2021-11-08T15:44:59ZInvestigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method2476-39772538-2616https://doaj.org/article/f1efa7d9ef5347e2a9b30781f4aea90f2015-06-01T00:00:00Zhttps://www.jsce.ir/article_38613_716cab7b21f58b6e85762ac62aba0f99.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616For time history analysis of structures, appropriate records are needed. Due to the lack of strong-motion records from large earthquakes in some parts of Iran (e.g. Tehran region), earthquake simulation is a useful tool for studying strong-motion characteristics. In this study, a hybrid method has been used for obtaining source parameters of the 1990 Rudbar-Manjil earthquake (Mw7.3). In this simulation we assume fault plane, slip distribution and etc., then each parameter optimized after comparing simulated results with observed ones. In this hybrid method low frequency component of record obtained by the wave-number scheme that is a deterministic method and high frequency component obtained by the stochastic simulation method of Boore (2003), extended to the case of finite faults. Records from the stochastic method filtered with a high pass filter (fc=1.5 Hz) and results from the deterministic method filtered with low pass filter (fc=1.5 Hz), then the time-histories have been combined/added in the time domain. Final results have been compared with observed PSA and PSV in specified strong-motion stations. After comparing, optimized parameters have found, then based on this optimized parameters intensity contour has drawn; simulated intensity contours show good match with and observed ones. Best parameters are 2500 m/s for rupture velocity and 3 seconds for ramp function (i.e. rise time) and 36.82° N and 49.40° for earthquake epicenter. The results are important for the assessment of hazards in other seismically active parts of Alborz mountains (e.g. Greater Tehran area).Ali HadianHamid ZafaraniJamshid FarjoodiIranian Society of Structrual Engineering (ISSE)articleearthquake simulationhybrid simulation methodroudbar-manjil earthquakeBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 2, Iss 1, Pp 5-18 (2015)
institution	DOAJ
collection	DOAJ
language	FA
topic	earthquake simulation hybrid simulation method roudbar-manjil earthquake Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	earthquake simulation hybrid simulation method roudbar-manjil earthquake Bridge engineering TG1-470 Building construction TH1-9745 Ali Hadian Hamid Zafarani Jamshid Farjoodi Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
description	For time history analysis of structures, appropriate records are needed. Due to the lack of strong-motion records from large earthquakes in some parts of Iran (e.g. Tehran region), earthquake simulation is a useful tool for studying strong-motion characteristics. In this study, a hybrid method has been used for obtaining source parameters of the 1990 Rudbar-Manjil earthquake (Mw7.3). In this simulation we assume fault plane, slip distribution and etc., then each parameter optimized after comparing simulated results with observed ones. In this hybrid method low frequency component of record obtained by the wave-number scheme that is a deterministic method and high frequency component obtained by the stochastic simulation method of Boore (2003), extended to the case of finite faults. Records from the stochastic method filtered with a high pass filter (fc=1.5 Hz) and results from the deterministic method filtered with low pass filter (fc=1.5 Hz), then the time-histories have been combined/added in the time domain. Final results have been compared with observed PSA and PSV in specified strong-motion stations. After comparing, optimized parameters have found, then based on this optimized parameters intensity contour has drawn; simulated intensity contours show good match with and observed ones. Best parameters are 2500 m/s for rupture velocity and 3 seconds for ramp function (i.e. rise time) and 36.82° N and 49.40° for earthquake epicenter. The results are important for the assessment of hazards in other seismically active parts of Alborz mountains (e.g. Greater Tehran area).
format	article
author	Ali Hadian Hamid Zafarani Jamshid Farjoodi
author_facet	Ali Hadian Hamid Zafarani Jamshid Farjoodi
author_sort	Ali Hadian
title	Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
title_short	Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
title_full	Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
title_fullStr	Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
title_full_unstemmed	Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method
title_sort	investigation of source parameters of roudbar-manjil earthquake using hybrid simulation method
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2015
url	https://doaj.org/article/f1efa7d9ef5347e2a9b30781f4aea90f
work_keys_str_mv	AT alihadian investigationofsourceparametersofroudbarmanjilearthquakeusinghybridsimulationmethod AT hamidzafarani investigationofsourceparametersofroudbarmanjilearthquakeusinghybridsimulationmethod AT jamshidfarjoodi investigationofsourceparametersofroudbarmanjilearthquakeusinghybridsimulationmethod
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Investigation of Source Parameters of Roudbar-Manjil Earthquake Using Hybrid Simulation Method

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