Modeling the Tsunami of 30 September 2009 in Samoa islands
Disaster Control Research Center, Tohoku University
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Modeling the Tsunami of 30 September 2009 in Samoa islands
DCRC, Tohoku University
Tsunami Model Description
- Geverning Equation : Non-linear Shallow Water Equations
- Numerical Scheme : Leap-frog Finite Difference Method (TUNAMI-CODE of Tohoku University)
- Spatial Grid Size : 30 sec
- Bathymetry Data : GEBCO
- Population Data : Landscan (Oak Ridge National Laboratory)
Tsunami Source Model
Case 1
- Mo = 1.2 x 10**21 Nm
- Fault Length / Width : 150 km / 75 km
- Source Mechanism (Strike, Dip, Slip) = (345, 52, -61) Reference :USGS
- Dislocation : 3.6 m
Case 2
- Mo = 1.2 x 10**21 Nm
- Fault Length / Width : 150 km / 75 km
- Source Mechanism (Strike, Dip, Slip) = (124, 46, -120) Reference :USGS
- Dislocation : 3.6 m
Case 3 (Far Field Calculation Only)
- Mo = 1.2 x 10**21 Nm
- Fault Length / Width : 175.7 km / 27 km
- Source Mechanism (Strike, Dip, Slip) = (342.5, 57.1, -61) Reference :USGS
- Dislocation : 6.32 m
Seismic Deformation Model Result
For original resolution, click the image below.
Case 1
Case 2
Tsunami Model Movie for Near Field Calculation(QuickTime Required)
Click to play (Approximately 1.6MB)
Case 3
Tsunami Model Movie for Far Field Calculation (MediaPlayer Required)
Click to play (Coming soon)
Case 1 (Far Field Calculation)
Case 2 (Far Field Calculation)
Case 3 (Far Field Calculation)
Modeled Tsunami Height and Exposed Population
Modeled tsunami (Case1)
Modeled tsunami
Modeled tsunami in American Samoa
Exposed population
Modeled tsunami in the Pacific
Modeled tsunami (Case2)
Modeled tsunami
Modeled tsunami in American Samoa
Exposed population
Modeled tsunami in the Pacific
Modeled tsunami (Case3)
Modeled tsunami in the Pacific