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Depth-integrated equation for hydro-acoustic waves with bottom damping

  • Ali Abdolali (a1) (a2), James T. Kirby (a1) and Giorgio Bellotti (a2)


We present a depth-integrated equation for the mechanics of generation, propagation and dissipation of low-frequency hydro-acoustic waves due to sudden bottom displacement in a weakly compressible ocean overlying a weakly compressible viscous sediment layer. The model is validated against a full 3D computational model. Physical properties of these waves are studied and compared with those for waves over a rigid sea bed, revealing changes in the frequency spectrum and modal peaks. The resulting model equation can be used for numerical prediction in large-scale domains, overcoming the computational difficulties of 3D models while taking into account the role of bottom dissipation on hydro-acoustic wave generation and propagation.


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Depth-integrated equation for hydro-acoustic waves with bottom damping

  • Ali Abdolali (a1) (a2), James T. Kirby (a1) and Giorgio Bellotti (a2)


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