In this research, the characteristics of the Sefid Seng Freeman earthquake on April 16, 2016, with a magnitude of 6.1 and an estimated depth of 14 km, have been discussed and analyzed.GF The location and magnitude of this earthquake have been determined using Siesan and MATLAB software. that in Saizen, the value of the local magnitude is 5.5 and the surface magnitude is 6.1 and the depth value is estimated to be 15 km, and the estimated depth value for the spring in MATLAB and the fourth iteration is estimated to be 13.39 km.
the estimated depth value for the source in MATLAB and the fourth repetition is estimated to be 13.39 km. Due to the abundance of seismic stations in the northeast of the country, the reported positions for the main event and aftershocks have good accuracy. Also, the process of converting latitude and longitude coordinates to UTM and digitizing the data has also been done in Excel.
In this research, the least sum square error (LSSE) algorithm has been used to optimize the solution of the fault plane and the focal mechanism.