Obras y proyectos
On-line version ISSN 0718-2813
SHIBAYAMA, Tomoya et al. Implications of the 2011 Tohoku tsunami for risk management in Japan. Obras y Proyectos [online]. 2012, n.11, pp. 4-17. ISSN 0718-2813. http://dx.doi.org/10.4067/S0718-28132012000100001.
On March 11th 2011, a large earthquake of magnitude 9.0 on the Richter scale occurred offshore the northeast coast of Japan, generating a major tsunami which devastated large parts of Japan's north-eastern coastline. The "Great Eastern Japan Earthquake and Tsunami" has been described as one in several thousand years event, and as a consequence it is necessary that the revising of the philosophy behind Coastal Disaster Management in Japan take into account the lessons learned from this latest disaster. In this article, the authors present the results of their field surveys in the Tohoku area, describing the damage in various places and analysing the failure mechanism of a variety of coastal structures. The authors also present some changes that are currently occurring in the risk management philosophy in Japan. Essentially, the idea that infrastructure measures can always protect against the loss of life has been discarded, and although they can play a part in the protection of property ultimately planification measures should be the cornerstone of the strategy to protect people's lives in coastal areas.
Keywords : tsunami; Tohoku; Disaster Risk Management.