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- W2029896312 abstract "A major challenge in bottom-interacting ocean acoustics is to include an accurate description of environmental variability in a computationally feasible model. Wave field predictions are often difficult in environments with strong range dependence, with rapid bathymetric variations, with multiple scattering regions, with interface waves at fluid/solid boundaries, and/or with shear waves in the bottom. In this presentation, we are adapting an existing three-dimensional spectral-finite-element code (SPECFEM3D, distributed and supported by the NSF funded program, Computational Infrastructure for Geodynamics), originally developed for global seismology, to bottom interaction problems in underwater acoustics. Numerical results from SPECFEM3D are compared with the range-dependent acoustic/elastic wave propagation model based on the parabolic equation (PE) method, for a 10 Hz acoustic pulse propagating in the deep ocean. The importance of out-of-plane scattering and bottom shear properties on resulting wave fields are investigated. [Work supported by ONR.]" @default.
- W2029896312 created "2016-06-24" @default.
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- W2029896312 date "2012-09-01" @default.
- W2029896312 modified "2023-09-25" @default.
- W2029896312 title "Three-dimensional numerical modeling of sound propagation and scattering in the deep ocean with elastic (shear) bottoms" @default.
- W2029896312 doi "https://doi.org/10.1121/1.4755279" @default.
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