ESTIMATION OF STRONG GROUND MOTION FOR NORTH TABRIZ FAULT USING STOCHASTIC GREEN’S FUNCTION METHOD

Strong ground motions from future large earthquake are estimated at the historic masonry building, Bazaar, in Tabriz to examine earthquake-resisting capacity of the building in this paper. It’s very important to predict strong ground motions, estimate seismic damage and conduct retrofitting for a future large earthquake. Tabriz Bazaar is a brick structure constructed on about A.D.1400 or A.D.1500 and recently registered as the UNESCO World Heritage by effort of the state government. The stochastic Green’s function method is adopted to estimate strong ground motions at a target site. The target fault is North Tabriz Fault and the fault parameters, such as magnitude, seismic moment, stress drop, asperity size etc., are given by the recipe for predicting strong ground motions from future large earthquakes. Peak ground accelerations of the estimated strong ground motions for some rupture scenarios are in the range from 350cm/s/s to 800cm/s/s. The response spectra of estimated motions for some rupture scenarios are larger than that of observed records at Bam during the 2003 Bam Earthquake in the period range from 0.3second to 1.0second. The estimated strong ground motions will be very useful to examine earthquake-resisting capacity of the historic building, Bazaar, in Tabriz

Keywords:

Estimation of Strong Ground Motion , North Tabriz Fault , Stochastic Green’s FunctionMethod