Commentary to the Demo:
Upper left: synthetic far-field tsunami event in Monterey Bay, CA;
lower plots: motion in each normal mode (among the first three) excited by the tsunami;
upper right: the sum of the oscillations in the first three normal modes contains the bulk of the tsunami varience in the bay.
Colorscale - cm. Amount of the tsunami varience in the bay contained in each mode is shown in the plot.
E. Tolkova and W. Power. Obtaining natural oscillatory modes of bays and harbors via Empirical Orthogonal Function analysis of tsunami wave fields. doi: 10.1007/s00024-012-0518-0