Evaluating the seismicity parameters of Tehran, Iran

The objective of this paper is to evaluate the seismicity parameters of Tehran. These parameters are achieved using the Gutenberg–Richter method, cumulative distribution functions, and the Kijko–Sellevoll approach. First, a catalogue of earthquakes that have occurred within a radius of 200 km of Tehran is collected and processed. Aftershocks and foreshocks are ignored in the earthquake catalogue, and the main seismic events are considered in evaluating the data. In this approach the variable windows in time and location domains are employed, and the earthquakes are supposed to follow Poisson’s formulation. Subsequently, the seismicity coefficients for Gutenberg–Richter, cumulative distribution functions, and Kijko–Sellevoll methods are calculated and the magnitude–period graphs are constructed. Comparative analysis of the results shows the best accuracy for the Kijko–Sellevoll method, with the Gutenberg–Richter method providing the least precise results.