Estimating the Seismological Source Parameters of the 2006 Silakhor Earthquake, Iran, Using a Genetic Algorithm

摘要

The main objective of this article is to estimate the seismological source parameters of Silakhor earthquake which happened on March 31, 2006, in the southern part of Iran The Empirical Green's Function approach was used for simulating the main shock and the well known Genetic Algorithm was utilized for modifying the seismological source parameters. The Kostrov slip function was adopted in the model due to its ability in more accurately modeling the rupture process. The selected station was sufficiently far away from the causative source so that the near source problems would not effect on the simulated time series. The GA process compares the elastic response spectra with 5% damping ratio, corresponding to the synthesized three components of acceleration time histories with those of observed data at this station. Proper matching of these two types of data illustrates the potentiality of the technique in simulating and/or modifying the seismological source parameters. It also shows the reliability of the selected source-path parameters and site soil conditions. The proposed technique can be used in simulating strong motions to be used as a tool for estimating more reliable strong motions.