mohammad reza Ebrahimi - Department of Civil Engineering, Eyvan-e-Gharb Branch, Islamic Azad University, Eyvan, Iran
ali amjadi - Department of Civil Engineering, Eyvan-e-Gharb Branch, Islamic Azad University, Eyvan, Iran corresponding author
shamsedin esmaeili - Department of Civil Engineering, Eyvan-e-Gharb Branch, Islamic Azad University, Eyvan, Iran
hosein nesari - Department of Civil Engineering, Eyvan-e-Gharb Branch, Islamic Azad University, Eyvan, Iran

Caspian zone seismotectonics of the Iranian plateau, one of the world's most active seismotectonic zones are located. Observations and studies have shown that excessive accumulation of water on the dam in the past few years has been significant seismicity. Our regional seismicity using fractal dimension of space, and it changes the pattern of aftershocks and earthquakes and aftershocks in the region, we compared the relationship deteriorated.About 1943 earthquakes in the period 1902/02/13 to 2009/09/21 were used for the calculation. The study region includes 1943 earthquakes that was divided into 0.30×0.30 networks and put on an overlap about 150 to display a more comprehensive picture of the fractal distribution. Fractal dimension (D) of earthquakes in each grid wascalculated results show a good correlation between D and the pattern of earthquakes and aftershocks of earthquakes and aftershocks induced decline of the relationship, which represents the earthquake their induction into the Caspian

fractal dimension, the earthquake and aftershocks, Caspian, seismic induced