Off Sanriku Earthquake of March 9, 2011

Mainshock

• Epicenter: Off Sanriku, Japan
• Origin time: March 9, 2011 at 11:45 JST (JMA)
• Location: 38°19.7"N 143°16.7"E (JMA)
• Depth: 8 km (JMA)
• Magnitude: 7.3 (JMA)

Information in our site

• Determination of earthquake magnitudes using duration of high-frequency energy radiation and maximum displacement amplitudes: application to the March 9, 2011 Near the east coast of Honshu, Japan earthquake by Dr. Hara
• BRI Strong Motion Report

Earthquake catalogs in our site

• IISEE’s CMTs, Aftershock Distributions, Fault planes, and Rupture processes for recent large earthquakes in the world
• Catalog of Damaging Earthquakes in the World (from ancient times through June, 2009)

Institutions

• 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