Uniform Hazard Response Spectra and Ground Motions for Tabriz
Author(s):
Abstract:
Tabriz has experienced several large destructive historical earthquakes in the past. Due to the absence of ground motion records in this area, a simulation of future events based on a regional seismicity information and ground motion model is necessary. Based on a maximum likelihood method, earthquake magnitude is estimated for a 10% probability of exceedance within 50 years (475-year return period) and its corresponding strong ground motions have been simulated using stochastic nite fault modeling. Using di erent stress parameters, suites of ground motions have been simulated for a return period of 475 years and their spectral accelerations have been compared with the corresponding uniform hazard spectrum. It is observed that the t between simulated spectra and its corresponding uniform hazard spectrum has been improved including the directivity e ect especially at high periods. Keywords: Seismic hazard deaggregation; Stochastic nite fault; Stress parameter; Tabriz.
Language:
English
Published:
Scientia Iranica, Volume:16 Issue: 3, 2009
Page:
238
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