Abstract
Nowadays, in the processing of seismic data, the determination of P wave first-arrival time is an important step to obtain the velocity information of the surface layer and enables us to improve the static correction. Manual first break picking is time consuming and depends on the processor imagination. Various techniques have been proposed for the detection and perception of different inputs of single-component and three-component seismic waves. In this paper, the short-term average energy to long-term average energy ratio method is used and optimized for seismic data using MATLAB software. This method has been applied on artificial seismic data first and after its effectiveness on the actual data of the study and the percentage of the error estimated at 0.4 percent is the real data used in one of the western fields of Iran, the results indicate that the method is optimal.