The China Digital Seismograph Network

The China Digital Seismograph Network (CDSN) program was initiated in May 1983. On October 1, 1986, the CDSN began to distribute the network-day tapes to the research community. On October 22, 1987, the CDSN began full operation. The CDSN are supported by the State Seismological Bureau, People's Republic of China and the United States Geological Survey. The operation and maintenance of the network are taken by the staffs at the 10th Division of the Institute of Geophysics, State Seismological Bureau, QGSSB). At present the CDSN includes ten field stations, Le Beijing (BR), Lanzhou (LZH), Enshi (ENH), Kunming (KMI), Qiongzhong (QIZ), Shanghai (SSE), Urumqi (WMQ), Hailar (HIA), Mudanjiang (MDJ), and Lhasa (LSA), two national centers, i.e. the Network Maintenance Center (NMC) and the Data Management Center (DMC), both at the Institute of Geophysics, State Seismological Bureau, Beijing