March 2011. National Research Institute for Earth Science and Disaster Resilence (NIED).
Strong motion data available from Kyoshin network (K-NET) and Kiban Kyoshin network (KiK-NETK).
Download the Strong Motion Data: http://www.kyoshin.bosai.go.jp/cgi-bin/kyoshin/bigeqs/index.cgi?E
Read about K-NET and KiK-net: http://www.kyoshin.bosai.go.jp/kyoshin/docs/overview_kyoshin_index_en.html
