Estimation of Seismicity Parameters and Hazard Assessment of Maragheh City, Iran

Year 2018, Volume: 15 Issue: 1, - , 30.05.2018

Shahrzad Nikoobakht Mohammad Azarafza Homayon Safaei

Abstract

This paper endeavours to assess seismicity and seismical engineering parameters and zonation of Maragheh city by using the NGA modelling. A definitive objective of this system is giving seismicity parameters which evaluated by in NGA modelling, directly used to hazard assessment and building design where utilized forMaragheh city. In order to hazard risk assessment for the city, the Gutenberg-Richter and kijko - sellevoll methods after NGA is applied. As indicated by the figured outcomes, seismic coefficients of Gutenberg-Richter connection are (Log Nc=3.692-0.501Mw) a=3.692, b=0.501 by R2=0.98 and kijko - sellevoll propelled strategy are Beta =1.15±0.08 (b=0.50±0.03) and Lambda=2.70±0.041 then Mmax=9.70±0.52 for the city. Finally, in light of NGA models, the seismicity parameters for Maragheh city are PGV=27.3 (cm/sec), PGD=2.2 (cm) and PGA=0.19 (g). According to the assessment results of seismicity the Tabriz and Urmia- Zarinehrud faults are main rule on seismical activity and the city is located in most hazardous zone in Iran.

Keywords

Seismicity, Hazard Assessment, Maragheh City, PGA, NGA

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