Introduction
This paper is taken into consideration to provide earthquake acceleration maps in Saveh area based on seismicity. Ipak fault with the length of 100 km, the eastern-western bending direction, is considered as the most effective earthquake factor in this area. This fault is the cause of the horrific event of the 1962 Bouin Zahra with a magnitude 7.2. The faults of the Indes, Baghestan, Eshtehard, Koshk e Nosrat are other region faults which are in the active class. The 1177
earthquake, with a magnitude 7.2, in the east of the study area, was considered as the largest historical event. The earthquake of 1119 AD, with a magnitude of 6.5, is also the second largest earthquake of this zone from Iran. The 1962 earthquake with magnitude 7.2, as the largest device event in this area, has occurred in related to the Ipak fault activity. The second major device earthquake in the area is associated to earthquake 2017 Malard with magnitude 5.2.

Materials and methods
The way forward of this study, entails seismic springs, identification and estimation of seismic parameters and involvement of historical earthquakes in analyses. Eventually, analyses are conducted in the EZ-Frisk software environment, by assigning these parameters to seismic springs. The probabilistic method was used in order to estimate the maximum values of the ground-level movement parameters. They were used the new generation equations of the calculation to determine the maximum amount of ground motion parameters. In addition, in order to calculate the acceleration of the earthquake, the lattice points with appropriate distribution (intervals of 5 * 5 km) and more than 645 points, were made the definition and calculation of earthquake acceleration for each of these points.

Results and discussion
The results of these studies were presented in the form of horizontal acceleration maps for a period of close to zero seconds (PGA). Regarding these maps, the maximum acceleration is approximately 0.94g and is related to the earthquake with a return period of 2475 years. For a return period of 975 years, the maximum acceleration values are nearly 0.69g. In the return period of 475 years, the maximum earthquake acceleration is about 0.49g.

Conclusion
Comparing the results of this study to Jamali and Tavakoli-zadeh (1387) studies is comparable for the period of returns of 475 and 2475 years. Accordingly, the maximum acceleration seismic in the study area, for the aforementioned return periods are 0.41g and 0.57g respectively. Results can be different due to the software weaknesses in three-dimensional modeling of springs, the equations of old declining with limited functionality and the modeling of seismic springs. The maximum earthquake acceleration in these studies, based on the return periods, is 0.35g and 0.50g, respectively. According to this, by comparing the results of the return period of 475, the estimated numbers are in consistent with the data of this article. This issue is due to the software being identical, input data, and diminished equations of relatively new.