Application of 64-type Seismometer Simulations on Digital Seismic Observation in Lanzhou Station
Based on the principle and method of seismometer simulation,we made the EDSP-IAS analysis software as a platform in daily work and processed the calibration data of analog recording for many years.Using the known transfer function of 64-type seismometer,we obtained the zero-pole value by means of analyzing calculation.We made the 64-type seismometer as a target simulation instrument added to the EDSP-IAS analysis software,and the improved software had been verified in the large earthquake rapid alerting and analysis work in Lanzhou Station.The results showed that we simulated the weak earthquake in medium-long distance,smaller ultra-distant earthquake and the earthquake occurred in the shade area in Lanzhou Station by 64-type seismometer,we can easily discriminate the arrival time of initial P-wave,first motion direction,and the phase discrimination has greatly improved by 64-type seismometer.