Standardized remote determination system and method of seismic sensor orientation using earthquake waveforms and microseism records

A remote determination method of seismic sensor orientation using earthquake waveforms and microseism records, performed by a control server with database and operation functions, the control server performing:

• a step of receiving earthquake waveforms and microseism records input to a data collection unit;
• a step of analyzing earthquake P-waves and earthquake Rayleigh-waves of the earthquake waveforms input to the data collection unit, and analyzing microseism of the received microseism records by a data analysis unit;
• a step of selecting a reference seismic sensor using analysis results derived from the data analysis unit by a reference seismic sensor selection unit;
• a step of determining a misorientation angle of a target seismic sensor, using an apparent radial direction determined through microseism analysis in the data analysis unit and the reference seismic sensor selected in the reference seismic sensor selection unit by a misorientation angle determination unit;
• and
• a step of determining a final representative value of a seismic sensor orientation by a final representative value determination unit, by collecting a seismic sensor orientation estimate calculated from the earthquake P-wave analysis of the data analysis unit, a seismic sensor orientation estimate calculated from the earthquake Rayleigh-wave analysis, and a seismic sensor misorientation angle determination value calculated from the misorientation angle determination unit.