摘要
A seismic array is a set of seismographs being arranged in a regular geometric pattern to improve signal- to-noise ratio （SNR）. Seismic arrays at various length scales have been introduced since early 1960s and have been proved to be superior to single three-component stations for detecting and characterizing signals from earthquakes and explosions. The better detection capability of arrays is achieved with a so-called ＂beamforming＂ technique, which suppress noises while preserving signals, thus enhancing SNR. The ＂beamforming＂ technique also estimates the wave vector, i.e.,
A seismic array is a set of seismographs being arranged in a regular geometric pattern to improve signal- to-noise ratio （SNR）. Seismic arrays at various length scales have been introduced since early 1960s and have been proved to be superior to single three-component stations for detecting and characterizing signals from earthquakes and explosions. The better detection capability of arrays is achieved with a so-called ＂beamforming＂ technique, which suppress noises while preserving signals, thus enhancing SNR. The ＂beamforming＂ technique also estimates the wave vector, i.e.,
