Evaluation of seismic instruments performance and field parameters is essential to ensure recorded seismic data and field operation efficiency. To verify the instruments performance, a field test program conducted at the beginning of passive seismic data acquisition in Dehdasht area before final field installation. Following the instrument test of all the data logger units, seismic acquisition equipment (sensor, logger, GPS, Battery) was set up for all stations at a proper test site and stations allowed to record data for 48 hours following the time required for the sensors to become stable. Data from all stations retrieved and analyzed in time and frequency domain individually and in compare to the data from other stations. Particle motion and HVSR techniques and analysis of noise and signal level at each station implemented as complementary techniques to evaluate the performance of the stations.
Results of the test confirmed the instruments and equipment conformity to the standard specifications and their competency to undertake Dehdasht passive seismic acquisition survey.