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8/10/2019 Lesson and Recovery Process From the 2011 East Japan Tsunami
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Lessons and recovery process from the2011 East Japan tsunami- Intro. of IRIDeS
By Fumihiko Imamura, ProfDirector, Prof.,IRIDeS, Tohoku University
INTERNATIONAL SEMINAR ON THE 10 YEARS COMMEMORATIONOF THE 2004 INDIAN OCEAN TSUNAMI
Towards a Resilient Maritime Nation to Natural Disastersfor Ensuring Sustainable Marine Investment and Development
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Satake, 2010
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Historical data of earthquake & tsunami in Tohoku
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Example of old documentSandai Jitsuroku ( )
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Historical tsunamis in Tohoku for 400 years and the 2011 Tohoku Eq.
T.Hatori Distributions of Seismic Intensity and Tsunami of the 1793 Miyagi Oki Earthquake, NortheasternJapan, Bulletin of Earthquake Research Institute, University of Tokyo, 62, 297-309 (1987).
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The inundation area far exceeded that indicated inmunicipal hazard maps.
Ofunato City, IwatePref.
Sendai City, Miyagi Pref.
Inundated Area Hazard Maps
Source: Cabinet Office
Disaster Prevention
Disaster Management BureauCabinet office(2011)
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Levee heights andTsunami trace heights
[Basic concept of levee design height ]Height of levee is decided by the higher
of either storm surge or tsunami.Tsunami height is mainly used for
sawtooth coasts and storm surge height isused for others.
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The tsunami attacking Sendai area 16:01 JT on March 11
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Tsunami Disasters
Huge amount of inundation (561 km2)+ destructive wave force Direct and in-direct tsunami damages Floating of debris, ships, cars and tanks Fires by attack of ships, sea water, houses Change of topography and Geometry due to erosion and
deposition
Ships and fire at Kesennuma Destruction on community at Sendai
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Past Protections in Multi-layers, Damage by the 2011 and Plan forTsunami Resilient city in Sendai
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Disaster Disaster Institute settled inMajor National University
1923Great Kanto
Earthquake
The University of TokyoEarthquake Research
Institute 1925-1950Typhoon Jane
Kyoto UniversityDisaster Prevention Research
Institute 1951-2011GEJE and Tsunami
Tohoku University InternationalResearch Institute of
Disaster Science 2012-
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Research area Tohoku Univ.IRIDeS
Univ. ofTokyo
E Institute Kyoto Univ.D Institute
Niigata Univ.R Institute
FukushimaUniv.
S Institute D Institute
Hazardand Risk
Evaluation
DisasterScience
Earthquake,Tsunami
Hazard and Risk
Natural DisasterScience
4 4
3
Volcanic
Wind and Rain
Snow Storm
Human & Social ResponseHuman and
SocialResponse
11
Regional
& UrbanReconst-ruction
Regional safety
Regional andUrban
ReconstructionRadiationDecontamination
Robotics
Medical Relief Disaster MedicalScience
Public Cooperation Information
management
11
International Collaboration Yes Yes Yes
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DisasterCycle
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Thank you for your attention