GPS shield for tsunami early warning

See also Special Page on the Earthquake and Tsunami in Japan, 11.03.2011

The figure shows the evolution of the rupture model based on real-time GPS data (top row) and corresponding tsunami forecasting (lower row) in time: 60, 90 and 180 seconds after beginning of the earthquake. The model after 3 minutes already is in good agreement with actual wave height observations at the coast. (A. Babeyko, GFZ)
The figure shows maximum tsunami wave heights resulting from a GPS-based model of the Tohoku earthquake. Focusing effects due to bathymetric features are clearly visible, as is the strong increase of wave height close to the coast. Thin black lines depict tsunami travel times in 1-hour steps. (A.Hoechner, GFZ)

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