1. Yoshihiro Ito Disaster Prevention Research Institute, Kyoto University
Public partnership between Japan and Mexico on disaster mitigation of large earthquake and tsunami hazards: the SATREPS project
Yoshihiro Ito
Disaster Prevention Research Institute,
Kyoto University

2. Earthquake & Tsunami Disaster
Sendai Airport
The most tragically damage was owing to the tremendous tsunami radiated from the source region.
Tsunami attacking near the Sendai Airport

3. Run-up height of the tsunami along the Sanriku coast
The tsunami wave climbing over the tsunami embankment with a height of 10 m in Taro-cho, Iwate.
The shape of the coast line is effectively prone to amplify a amplitude of tsunami.
Maximum run-up height reached to 35 or almost 40 meters.

4. Which knowledge did we lack ?
When will the earthquake occur ?
What will happen during the earthquake ?
What will happen after the earthquake ?
How can we evacuate from Tsunami ?

5. Our forecast of focal areas before the 2011 EQ. based on past events
Estimation before the 2011 EQ.
Japan Trench
Japan Trench
Yamanaka and Kikuchi (2011)

6. ? Megathrust earthquake in Mexico ??
–New science project toward disaster mitigation
for Future Megathrust Earthquake and Tsunami–
2009 ?
????
2013

7. Japan International Cooperation Agency
SATREPS :
Science and Technology Research Partnership for Sustainable Development
Japan Science
and Technology Agency
Japan International Cooperation Agency
Total Budget:
$478M JPY
(~$86M MXN)

8. Observations and Monitoring
The Project for Hazard Assessment of Large Earthquakes and Tsunamis in the Mexican Pacific Coast for Disaster Mitigation
Group A:
Investigation into the seismic coupling in the plate interface based on seismic monitoring and geodetic observation data
A-1: offshore observation
Deployment of ocean bottom seismometer and pressure recorder;
Investigation of tsunami deposit near the trench
A-2:onshore observation
Stability of more onshore seismic and geodetic statinos
Acquisition of seismic and geodetic data for slow earthquakes using new monitoring system;
Evaluation of seismic coupling model
Group A:
Observations and Monitoring
Project Purpose
Group B:
Modeling of Earthquakes
and Tsunami
Group B:
The construction of earthquake/tsunami scenarios based on the earthquake/tsunami modeling
B-1:Earthquake modeling
Modeling of earthquake cycle, strong motion, slow earthquakes, and thermal structure
B−２：Tsunami modeling
Modeling of tsunami’s source, height, inundation; Study of Tsunami monitering system by using onshore sites.
Construction of Earthquake/Tsunami scenarios and hazard maps.
Group C:
Outreaches & Educations to Stakeholders
Group C:
The development of disaster mitigation education program meeting the local needs
C-1: Vulnerability and risk assessment
Assessment of structural and socio-economical vulnerability; Development and operation of tsunami evacuation, risk maps and evacuation guide signs
C-2: Development and deploy of education programs
Development and deployment of disaster mitigation education program; Archive and outreach of past disastrous earthquakes and tsunami
　　Spread and stability of education program and activities to raise awareness of earthquake/tsunami disaster mitigation

9. Offshore observation to know future focal areas of earthquakes
Ocean Bottom Seismic and Geodetic network above the source area
Ocean bottom seismometer
( To measure earthquakes)
Ocean bottom Pressure Recorder
( To measure uplift or subsidence)
OBPR w/ GPS-A
( To measure horizontal displacement)

10. Tsunami Disaster Mitigation : Educational Programs
Awareness and preparedness of the population through different educational activities
Educational materials for disaster mitigation developed from hazard maps and local needs

11. Dvelopment of Earthquake Science and
Policy toward Earthquake and Tsunami Disaster
Comparative study of Japan and Mexico :
Essentially understanding of earthquake in subduction zones
Making reliable earthquake and tsunami models
Rupture area for the future Nanaki EQ.
We need to accumulate knowledge toward the future Nankai Megathrust Earthquake and Tsunami as well as Guerrero Gap
Nam et ipsa scientia potestas est !! (Sir Francis Bacon, 1597)