We experimentally investigate internal coastal Kelvin waves in a two-layer fluid system on a rotating table. Waves in our system propagate in the prograde direction and are exponentially localized near the boundary. Our experiments verify the theoretical dispersion relation of the wave and show that the wave amplitude decays exponentially along the propagation direction. We further demonstrate that the waves can robustly propagate along boundaries of complex geometries without being scattered and that adding obstacles to the wave propagation path does not cause additional attenuation.

中文翻译：

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内部沿海开尔文波在复杂域中的稳健传播

我们通过实验研究在旋转工作台上的两层流体系统中的内部沿海开尔文波。我们系统中的波沿前进方向传播，并在边界附近呈指数分布。我们的实验验证了波的理论色散关系，并表明波振幅沿传播方向呈指数衰减。我们进一步证明，这些波可以沿着复杂几何形状的边界稳健地传播而不会被散射，并且向波传播路径添加障碍不会引起额外的衰减。