Construction and development of China digital seismological observation network

The seismological observation system in China has experienced rapid development over the Tenth Five-year Plan period. China Earthquake Administration (CEA) has completed the establishment of China digital seismological observation network. CEA has accomplished analog-to-digital conversion of the existing seismological observation systems and set up a number of new digital seismic stations. This indicates full digitization of seismological observation in China. This paper presents an overview of the scale, layout principle and major functions of the updated national digital seismograph network, regional digital seismograph network, and digital seismograph network for volcano monitoring and mobile digital seismograph networks in China.