Defining Optimized Parameters of Seiscomp3 for Real-time Seismic Data Processing in Central Alborz Region, Iran

Seiscomp3 is one of the few software programs used nowadays for real-time data processing including earthquake location. It uses continuous waveforms as an input, automatically computes Short Term Average to Long Term Average ratio (STA/LTA), picks phases, and then locates events by pre-defined travel-time tables in a grid formatted file. In this study, continuous waveforms recorded by Iranian Seismological Center affiliated to University of Tehran (IRSC), Central Alborz region of 2010 were used. The region includes 3 seismic sub networks including Tehran, Sari and Semnan with 19 short period stations. Using sesicomp3 in offline mode is important for calibration and optimization of parameters such as defining optimized filter, suitable STA/LTA ratio, and proper velocity model and so on. Obtaining optimized parameters for seiscomp3 in Central Alborz region is the essence of this study as micro seismic events that were not detected in the IGUT routine bulletin for the year 2010 were found using seiscomp3. Now there is an opportunity to locate events automatically in real-time mode and more accurate results can be obtained compared to routine manual phase picking done by IGUT.