SE Off Kii Peninsula Earthquakes of September 5, 2004

Event

Foreshock (Off Kii Peninsula Earthquake)

• Epicenter: Off Kii Peninsula, Honshu, Japan
• Origin time: September 5, 2004 at 19:07 (Local time in Japan)
• Location: 033°01'N 136°48'E (JMA)
• Depth: 38km (JMA)
• Magnitude: 6.9 (JMA)

Mainshock (Off Tokaido Earthquake)

• Epicenter: Off Tokaido, Honshu, Japan
• Origin time: September 5, 2004 at 23:57 (Local time in Japan)
• Location: 033°08'N 137°08'E (JMA)
• Depth: 44km (JMA)
• Magnitude: 7.4 (JMA)

Information in our site

• Preliminary Results of Rupture Process by Dr. Yagi (Japanese)
• CMT solution determined by Direct Solution Method by Dr. Hara (Foreshock)
• CMT solution determined by Direct Solution Method by Dr. Hara (Mainshock)
• Change of source mechanism inferred from long period body wave data (Mainshock)
• Prompt report on BRI Strong Motion Observation

Direct links

• USGS National Earthquake Information Center (Foreshock)
• USGS National Earthquake Information Center (Mainshock)
• Special Event Page, Earthquake Research Institute (ERI), University of Tokyo
• Special page at National Research Institute for Earth Science and Disaster Prevention (NIED) (in Japanese)
• Press release for the crustal deformation, Geographical Survey Institute (GSI) (in Japanese)