Focal mechanisms of Mw 6.5, March 31. 2006 Iran- Silakhor earthquakeusing data from the Iranian Seismic Network

The source parameters and focal depth of the destruct ive m, 6.5, 31 march . 2006 iransilakhorearthquake, the two largest foreshocks and a major aftershock are determin edusing broadband data from a seismic network in iran based on a time-domain linearmoment tensor inversion . the earthquakes occurred in the zagros suture zone in westerniran. waveform inversion of the selected events estimated focal depths in the range of15-20km which limits the brittle- ductile transition zone beneath parts of the studied area .the dominant double-couple part of the moment tensor solutions for most of the eventsindicates that the analysis is working reasonably well and that the amplitudes at theindividual stations are not too disturb ed by local structure or noise. re-evaluation of theanalyzed events shows predominantly right-lateral strike-slip faulting consistent with therelative motions of the significant faulting in the region