THE 2006 FEBRUARY 28 TIAB EARTHQUAKE (IRAN), MW 6.0, AFTERSHOCK SEQUENCE

From 2006 February 28 to 2006 April 1, a temporary seismological network was deployed in the epicentral region of the 2006 February 28 Tiab earthquake, Mw 6.0, to study aftershocks. Epicentral distribution of the aftershocks is diffuse and we can not define simple alignment. At depth aftershocks are concentrated between 15 and 25 km that imply different characteristic of the earthquakes in this region from those in the Zagros. The depth of the aftershocks increases northeastward gently that could be associated to a thrust fault with a very low angle dip. Calculated focal mechanisms for aftershocks also verify low angle thrusting consistent with focal mechanism of the other events in this region calculated by body wave modeling. This can be related to underthrusting of the Arabian plate beneath Central Iran in eastern end of the Zagros in north of the Zendan-Minab-Palami Fault system.