Shallow water.
N J 2 F  
10 100 10 0
3
0 0 0 0 0 0 0
0 1500 -1480 0 0 1 0
100 1800 400 0.1 0.5 1.8 0

1
80 0 0 1 0

-50 0 0 0          #  source spectrum read from file fort.50

1400 1E8
400 400 100