"NIED K-NET, KiK-net are strong-motion seismograph networks aimed at accurately observing strong motions without saturation even in severe shaking. K-NET consists of more than 1,000 stations on the ground surface with average station-to-station distance of 20 km. KiK-net consists of pairs of seismographs installed in a borehole together with Hi-net as well as on the ground surface.
About NIED K-NET and KiK-net
http://www.kyoshin.bosai.go.jp/kyoshin/docs/overview_kyoshin_index_en.html
Site List
http://www.kyoshin.bosai.go.jp/kyoshin/db/index_en.html?all"
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