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This is a Numerical simulation study.

Numerical simulation for three dimensions infrasound propagation in shadow zone using a one-way approach

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Numerical simulation demonstrates effective infrasound propagation in shadow zones, highlighting nonlinear characteristics of the acoustic model.

The study finds that a 3-D numerical method can reconstruct observed infrasound signals in shadow zones.
Comparative analysis with analytical solutions shows the method's efficacy in accurately predicting infrasound propagation.
Adopting a unidirectional approximation allows for efficient modeling of nonlinear acoustic wave behavior in heterogeneous media.
The work improves our understanding of infrasound propagation environments, particularly in areas challenged by conventional geometric acoustics.

Verdier et al. (2025) studied this question.

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Numerical simulation demonstrates effective infrasound propagation in shadow zones, highlighting nonlinear characteristics of the acoustic model.