02
Nov
07

Rayleigh Surface Waves

Rayleigh Surface Waves are associated with ocean waves and earthquakes.

Here is some Mathematica code:

(* runtime: 0.2 second *)
omega = 2 Pi; k = 7; nu = 0.33; n = 0.175; xi = Sqrt[(0.5 - nu)/(1 - nu)]; q = k Sqrt[1 - n^2 xi^2]; s = k Sqrt[1 - n^2];
Do[grid = Table[{x + k (Exp[q y] - 2 q s Exp[s y]/(s^2 + k^2)) Sin[omega t - k x], y + q (Exp[q y] - 2 k^2 Exp[s y]/(s^2 + k^2)) Cos[omega t - k x]}, {x, 0, 2, 0.1}, {y, -1, 0, 0.1}]; Show[Graphics[{Map[Line, grid], Map[Line, Transpose[grid]]}, AspectRatio -> Automatic, PlotRange -> {{-0.1, 2.1}, {-1.1, 0.25}}]], {t, 0, 1, 0.05}];

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