２００９年６月２４日、産業技術総合研究所の活断層研究センター長（地質学）である岡村行信氏は原子力安全・保安部会ならびに東京電力との「耐震・構造設計小委員会」会議の席で、連動型大地震の危険性について強くその対策を求め

「賢者は歴史に学び、愚者は経験に学ぶ」～連動型大地震発生リスクを無視してきた東京電力 - 木走日記:

Be wise. learn the history of which lost many lives.
There was a concluded scientific research and the official warning of big earthquake and tsunami from scientist group 2 years before the 3.11 Earthquake (2011).

In 1996 there was a huge block of rock (est. 27,000ton) fall in the tunnel in northern parts Japan, which sacrificed 20 lives. The government lost its court case, and has started to set up IT system of checking of moving of lands. During the set up in 2008, the research team has found that there were records of wide spread tsunamis in the layer of the area every 1000 years. The last one was more than 1100 years ago. The team warned Tokyo Electricity and government body 2009 with the data. They ignored the warning.