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6.2  Cyclone-generated wave field

Author
Stéphane Popinet
Command
gerris2D -DLEVEL=7 -DALPHA=3. cyclone.gfs | gfsview2D cyclone.gfv
Version
20091105
Required files
cyclone.gfs (view) (download)
cyclone.gfv hs.gfv mesh.gfv shifted.gfv
Running time
15 minutes

The wave model is used to simulate the evolution of the wave field generated by a model cyclone. See Popinet et al, 2009, Ocean Modelling for a detailed description.

The simulation domain is 3328× 3328 km and the evolution is simulated for 48 hours, during which the maximum wind velocity increases from 0 to 50 m/s.

The evolution of the significant wave height and corresponding adaptive mesh is illustrated in Figure 50. The maximum significant wave height and wind speed evolutions are illustrated in Figure 51.

Interestingly the extrema of significant wave height are shifted compared to the wind speed extrema (Figure 52). This shift has also been observed in real cyclone-generated wave fields.


Figure 50: Evolution of the significant wave height (left column) and adaptive mesh (right column).
t=12 hours
 
t=24 hours
 
t=36 hours
 
t=48 hours


Figure 51: Evolution of the maximum significant wave height and maximum wind speed.


Figure 52: Significant wave height (colours) and wind field.


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