NIED F-net is a broadband seismograph network consisting of about 70 stations nationwide. The seismometers are installed at the end of tunnels, several dozen meters from the entrance, where temperature and pressure are stable, and accurately measure ground motion over a wide frequency range. Observed data is digitized at each station and continuously transmitted to NIED.
Summary of NIED F-net
http://www.fnet.bosai.go.jp/about_us/
Station dataset
http://www.fnet.bosai.go.jp/st_info/
Response of observation equipment
http://www.fnet.bosai.go.jp/st_info/response.php
https://hinetwww11.bosai.go.jp/auth/seed/ (For registered users)
データ公表機関
防災科学技術研究所
データ公表機関(英)
National Research Institute for Earth Science and Disaster Resilience