Seismic array
![Layout of Yellowknife Seismological Array (YKA) in Canada. Shortband seismometers are installed on blue and red sites, while broadband seismometers are installed on green sites.[1]](/uploads/202502/10/YKA5612.png)
![A wavefront coming from north-east and crossing a seismic array[1]](/uploads/202502/10/Seismic_array5612.png)
![Configuration of large aperture array NORSAR and small aperture array NORES.[8]](/uploads/202502/10/NORSAR5612.png)
A seismic array is a system of linked seismometers arranged in a regular geometric pattern (cross, circle, rectangular etc.) to increase sensitivity to earthquake and explosion detection. A seismic array differs from a local network of seismic stations mainly by the techniques used for data analysis. The data from a seismic array is obtained using special digital signal processing techniques such as beamforming, which suppress noises and thus enhance the signal-to-noise ratio (SNR).