Beijing National Earth Observatory (NEOBJI) is managed by the Institute of Geophysics (IGP), China Earthquake Administration (CEA), which is an important field arm of IGP and having held a leading role in earthquake and multi-disciplinary geophysical observation in China for many years.
NEOBJI has a long glorious history.
YEAR_1930. The first seismic station in mainland China, which was installed by Chinese seismologists in 1930. After the Wiechert seismograph and Galitzin-Willip seismograph were deployed, the first seismograph was recorded on Sept.30, 1930.
YEAR_1930 to YEAR_1937. 2427 earthquakes were recorded. Bulletins and observation reports were published monthly and the data were exchanged with seismological agencies all over the world, which makes NEOBJT as a landmark of the modern seismological observation in China.
YEAR_1957. Renamed as Beijing Observatory, and obtained earthquake waveform data since June.1, 1957, with the installed 513-type mid-strong seismometer. The geomagnetism records was first obtained in 1957.
YEAR_1982. A 202m-depth cave for geophysical observation was completed with total inner length of 317.5m.
Year_1982 to Year_2010. Seismometers, a gravimeter, and tilt-meters were installed in the cave, while geo-magnetometers and instruments for water level were installed in the yard and down in boreholes.YEAR_1984. Be awarded the "International Earth Observation Centenary" Silver Medal by IAGA in recognition of the outstanding contribution in Geomagnetic Observation.