2011 Off the Pacific Coast of Tohoku Earthquake

We express our sincerest sympathy for all sufferers of the 11 March 2011 Off the Pacific Coast of Tohoku earthquake. Since a few years ago, the Active Fault and Earthquake Research Center (AFERC) had been engaged in the study of the Jogan earthquake tsunami that struck the Sendai Plain in 869 and had published part of the results. We are extremely regretful that a huge seismic disaster took place before our research achievements could ever be reflected in disaster countermeasures. We are feeling acute helplessness at the immense damages incurred by Miyagi and Fukushima Prefectures, where our surveys have been assisted by kind cooperation of many benevolent people. We cordially hope that the affected regions will again be home, as they once were, to beautiful pastoral landscapes and lively townscapes. We look squarely at the present situation and continue to do our utmost to promote research that can truly contribute to earthquake disaster prevention.

What's New (Last update 2011/4/4)

Outline of the 2011 Off the Pacific Coast of Tohoku Earthquake

Research Information Related to the Off the Pacific Coast of Tohoku Earthquake

Preliminary reports of emergency surveys

• Tsunami survey in Ibaraki and Chiba prefectures
  

Study on tsunami deposits

• Study on the 869 Jogan earthquake tsunami
  
• Tsunami simulation based on the Jogan earthquake fault model
  
• Study on giant tsunamis of the past using tsunami deposits (4/4 up)
  
  

What Becomes of Coasts That Sank?

Study on related inland earthquakes

M > 6 earthquakes following the 11 March 2011 mainshock

Northern Nagano Prefecture (M 6.2)

Off the Coast of Akita Prefecture (M 6.4)

Eastern Shizuoka Prefecture (M 6.2)

Northern Ibaraki Prefecture (M 6.1)

Southeastern Fukushima Prefecture (M6.0)

Analysis of seismicity near the Ibaraki-Fukushima Prefectural border

Satellite image information

Images of Rikuzen-Takata and Kesennuma

Other related research information

Forecast of the Nankai and Tonankai earthquakes based on the Integrated Groundwater Observation (in Japanese)

External Links

GEO Grid disaster task force (in Japanese)

Study on tectono-hydrology at AIST: An article in Naifuru, a public relations periodical of the Seismological Society of Japan (in Japanese)

"Well Web," a tectono-hydrology observation database (in Japanese)
AIST Geochemical Map of Sea and Land of Japan---nationwide mapping of chemical element concentrations, including those of toxic elements (in Japanese)
ERI University of Tokyo page on the March 2011 Off the Pacific Coast of Tohoku earthquake