Brief introduction of seismic network

Seismic network is an observation network composed of seismic stations at all levels. According to the magnitude controlled by it, it can be divided into microseismic network and strong earthquake network; According to the monitoring scope, it is divided into global seismic network, national seismic network and regional seismic network; According to the setting of station instruments, it is divided into long-period seismic network and short-period seismic network; According to the information recording mode, it can also be divided into analog seismic network and digital seismic network. The observation data in the seismic network are regularly sent by each station to the seismic data processing, analysis and prediction center, which is responsible for data collection, collation, editing and storage, as well as comprehensive analysis and research. In order to record earthquakes with different magnitudes and distances, short, medium and long period seismographs are generally set up; Corresponding recorders should also have large, medium and small amplitude types to obtain real records suitable for analysis.