Modeling a tsunami generated by an earthquake of Mw 7.6 in Central America [01/01/13 17:33 UTC]

Shunichi Koshimura
Tsunami Research Program,
Pacific Marine Environmental Laboratory, NOAA


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Numerical modeling of tsunami

Numerical modeling of tsunami was performed by using TUNAMI code, provided by DCRC, Tohoku University. Bathymetry data used in this model is "Sandwell-Smith sea floor topography". Grid size is 2min. Seismic deformation modeling is based on the fault parameters estimated by Earthquake Information Center of Earthquake Research Institute, University of Tokyo.

[Earthquake mechanisms (EIC, in Japanese)]

Model : EIC 1

  • Origin (Epicenter) = (12.8 N, 88.8 W)
  • (Strike, Dip, Slip) = (152, 33, -78)
  • (L,W) = (50 km, 30 km)
  • Dislocation = 3.1 m
  • Depth = 30 km (Estimated 50 km originaly in EIC)

Model : EIC 2

  • Origin (Epicenter) = (12.8 N, 88.8 W)
  • (Strike, Dip, Slip) = (318, 58, -98)
  • (L,W) = (50 km, 30 km)
  • Dislocation = 3.1 m
  • Depth = 30 km (Estimated 50 km originaly in EIC)

[Seismic deformation modeling]

[Computed tsunami waveforms]

See this map for points of modeling output.

[Maximum water surface elevation]

[Wave ray analysis]

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