About K-NET and KiK-net

  K-NET (Kyoshin Network) is a nation-wide strong-motion seismograph network, which consists of more than 1,000 observation stations distributed every 20 km uniformly covering Japan. K-NET has been operated by the National Research Institute for Earth Science and Disaster Resilience (NIED) since June, 1996. At each K-NET station, a seismograph is installed on the ground surface with standardized observation facilities.
  KiK-net (Kiban Kyoshin Network) is a strong-motion seismograph network, which consists of pairs of seismographs installed in a borehole together with high sensitivity seismographs (Hi-net) as well as on the ground surface, deployed at approximately 700 locations nationwide. NIED constructed KiK-net under the plan 'Fundamental Survey and Observation for Earthquake Research' directed by 'the Headquarters for Earthquake Research Promotion'.
  The strong-motion data recorded by K-NET and KiK-net are immediately transmitted to the data management center of NIED in Tsukuba. The observed strong-motion data are widely available to the public through the internet from this web site. The soil condition data explored at K-NET stations and the geological and geophysical data derived from drilling boreholes at KiK-net stations are also available.

  User registration is required to download K-NET and KiK-net data. Please see user registration page for details. You can freely use the K-NET and KiK-net data as long as you accede to the following two requests when you present or publish these results derived using the data. We would greatly appreciate you fulfill the requests which would greatly contribute to the continuance and improvement of our service by highlighting the prevalence of the K-NET and KiK-net.


 (1) Please specify that you have used K-NET and/or KiK-net data. K-NET and KiK-net have DOI.

   NIED K-NET, KiK-net
      https://www.doi.org/10.17598/NIED.0004

   An example to cite K-NET and KiK-net using DOI is as follows:
      National Research Institute for Earth Science and Disaster Resilience (2019),
      NIED K-NET, KiK-net, National Research Institute for Earth Science and Disaster Resilience, doi:10.17598/NIED.0004

 (2) Please send a copy of the publication to the address below. Electronic files are also acceptable.


 Mailing address:
  Strong Motion Seismograph Network Laboratory, Center for Earthquake, Tsunami and Volcano
  Observation Research, National Research Institute for Earth Science and Disaster Resilience
  3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan

 E-mail :