Classification of Laser Interferometer Seismic Signal Data based on K means Clustering

The mainly used devices to detect earthquakes are velocimeters and accelerometers. However, it is necessary to detect seismic waves accurately in micro-seismic wave measurement. A heterodyne laser interferometer is a high resolution detection device. Therefore, the laser interferometer is used as a seismometer. In micro-seismic signal analysis, it is required to discriminate earthquakes from explosions since micro-seismic waves have small magnitudes. To classify seismic waves, the body-wave amplitude ( p A ) and the surface-wave amplitude ( s A ) data are used. K-means clustering is implemented and then earthquake and explosion events are discriminated by using these data.