Abstract
The influence of internal wave packets (IWP) on low-frequency sound propagation in a shallow sea (an oceanic shelf) is considered. On the basis of experimental data, a model of the IWP is developed. The model is used in the theoretical analysis of sound scattering by the method of interacting modes. In the framework of this approach, sound scattering is found to be accompanied by both the energy transfer from the coherent component to the incoherent (fluctuating) component of the sound field and the redistribution of the sound energy between the modes. It is shown that the scattering of sound by IWP in a shallow sea leads to an increase of sound fluctuations and additional losses of the sound energy. The frequency dependences of these acoustic effects (fluctuations, additional losses) exhibit resonance features.
| Original language | English |
|---|---|
| Pages (from-to) | 684-689 |
| Number of pages | 6 |
| Journal | Acoustical Physics |
| Volume | 44 |
| Issue number | 6 |
| State | Published - Nov 1998 |
| Externally published | Yes |
ASJC Scopus subject areas
- Acoustics and Ultrasonics