Crossing internal wave trains are commonly observed in continental shelf shallow water. In this paper, we study the effects of crossing internal wave structures on three-dimensional acoustic ducts with both theoretical and numerical approaches. We show that, depending on the crossing angle, acoustic energy, which is trapped laterally between internal waves of one train, can be either scattered, cross-ducted or reflected by the internal waves in the crossing train. We describe the governing physics of these effects and illustrate them for selected internal wave scenarios using full-field numerical simulations.

中文翻译：

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浅水中穿过内波的低频声传播

在大陆架浅水中通常观察到交叉内波列。在本文中，我们采用理论和数值方法研究了交叉内波结构对三维声导管的影响。我们表明，根据交叉角度，在一辆列车的内波之间横向捕获的声能可以被交叉列车中的内波散射、交叉传导或反射。我们描述了这些效应的控制物理学，并使用全场数值模拟对选定的内波场景进行了说明。