Mid Niigata Pref. Earthquake of October 23, 2004

Mainshock

• Epicenter: Mid Niigata Pref., Honshu, Japan
• Origin time: October 23, 2004 at 17:56:00.3 JST (JMA), 08:56:01 UTC (USGS)
• Location: 37°17.3'N 138°52.2'E (JMA), 37.197°N 138.812°E (USGS)
• Depth: 14km (JMA), 15.8 km (USGS)
• Magnitude: 6.8 (JMA), 6.9 (USGS)

Damage

• Personal Injury: Dead 35, Injured >2200
• Damage on Residential Houses: Collapsed 263, Partially Destroyed 6394
  As of October 28 08:00 (Local Time), cf. http://www.fdma.go.jp/html/infor/index.html

Information in our site

• Preliminary Results of Rupture Process by Dr. Yagi (Japanese)
• Prompt report on BRI Strong Motion Observation
• Japan in the Information Network of Earthquake Disaster Prevention Technologies, IISEE

Direct links

• USGS Earthquake Hazards Program (EHP)
• Special page at National Research Institute for Earth Science and Disaster Prevention (NIED)
• Special page at Public Works Research Institute (Japanese)
• Special page at Geographical Survey Institute (Japanese)
• Special page at Geological Survey of Japan (Japanese)
• Special page at Earthquake Research Institute (ERI), University of Tokyo (Japanese)
• Special page at Niigata Unversity (Japanese)
• Special page at Architectural Institute of Japan (Japanese)
• Special page at Japanese Geotechinical Society (Japanese)

Online News

• CNN
• Yahoo Japan (Photo page) (Japanese)
• Yomiuri Online (Photo page) (Japanese)
• asahi.com (Photo page) (Japanese)
• Mainichi MSN Interactive (Photo page) (Japanese)

Institutions

• United States Geological Survey (USGS), USA
• Incorporated Research Institutions for Seismology (IRIS)
• K-NET, National Research Institute for Earth Science and Disaster Prevention (NIED)
• KiK-net, National Research Institute for Earth Science and Disaster Prevention (NIED)
• Headquarters for Earthquake Research Promotion
• Earthquake Research Institute (ERI), University of Tokyo